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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace Common
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{
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/// <summary>
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///字符串拓展
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/// </summary>
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public static class StringExtension
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{
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/// <summary>
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/// 隐藏中间字符串
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string GetHideCentre(this string str)
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{
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if (str.Length > 8)
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{
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return string.Format("{0}***{1}", str.Substring(0, 4), str.Substring(str.Length - 4, 4));
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}
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else if (str.Length > 5)
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{
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return string.Format("{0}***{1}", str.Substring(0, 2), str.Substring(str.Length - 2, 2));
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}
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else if (str.Length > 4)
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{
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return string.Format("{0}***{1}", str.Substring(0, 1), str.Substring(str.Length - 1, 1));
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}
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else
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{
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return GetHideHead(str);
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}
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}
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/// <summary>
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/// 隐藏头部
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string GetHideHead(this string str)
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{
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var length = 1;
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length = length > str.Length ? str.Length : length;
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if (str.Length < 4)
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{
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length = 1;
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if (str.Length == 1)
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{
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return str;
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}
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return "**" + str.Substring(str.Length - length, length);
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}
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length = 4;
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return "****" + str.Substring(str.Length - length, length);
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}
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/// <summary>
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/// 根据正则表达式返回符合条件的字符串
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/// </summary>
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/// <param name="str"></param>
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/// <param name="Pattern"></param>
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public static string GetRegex(this string str, string Pattern) {
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var vallist = str.GetRegexList(Pattern);
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return vallist.Count > 0 ? vallist[0] : "";
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}
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/// <summary>
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/// 根据正则表达式返回符合条件的字符串list
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/// </summary>
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/// <param name="str"></param>
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/// <param name="pattern">正则表达式</param>
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/// <param name="Splitstr">字符串分隔符队列默认 , 回车</param>
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/// <returns></returns>
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public static List<string> GetRegexList(this string str, string pattern, List<char> Splitstr =null) {
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var list = new List<string>();
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if (str == null) {
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return list;
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}
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List<char> _Splitstr =new List<char> { ',','\n',' ' };
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if (Splitstr == null)
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{
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Splitstr = _Splitstr;
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}
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else {
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Splitstr.AddRange(_Splitstr);
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}
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try
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{
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var strlist = new List<string>();
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foreach (var spli in Splitstr) {
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strlist.AddRange(str.Split(spli).ToList());
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}
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strlist.ForEach(item =>
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{
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foreach (var match in Regex.Matches(item, pattern))
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{
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var val = match.ToString();
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if (list.IndexOf(val) < 0)
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{
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list.Add(val);
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}
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}
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});
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}
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catch { }
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return list;
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}
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/// <summary>
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/// 移除所有空格包含中间的。
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string TrimAll(this string str) {
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var val= str.Trim().Replace(" ","").Replace(" ","");
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return val;
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}
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/// <summary>
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/// 用于判断是否为空字符
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsNull(this string s)
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{
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return s == null || (s.Trim().Length == 0);
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}
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/// <summary>
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/// 判断是否是guid
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsGuid(this string s) {
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return Guid.TryParse(s,out var newgid);
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}
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/// <summary>
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/// 用于判断是否为非空字符
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsNotNull(this string s)
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{
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return !s.IsNull();
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}
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#region 加密算法
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/// <summary>
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/// 将字符串SHA1
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string ToSHA1(this string str)
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{
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return SafeTools.SHA1(str).ToLower();
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}
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/// <summary>
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/// 将字符串转换成MD5加密字符串
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/// </summary>
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/// <param name="orgStr"></param>
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/// <returns></returns>
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public static string ToMd5(this string orgStr)
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{
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using (var md5 = MD5.Create())
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{
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var encoding = Encoding.UTF8;
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var encryptedBytes = md5.ComputeHash(encoding.GetBytes(orgStr));
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var sb = new StringBuilder(32);
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foreach (var bt in encryptedBytes)
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{
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sb.Append(bt.ToString("x").PadLeft(2, '0'));
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}
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return sb.ToString().ToLower();
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}
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}
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#endregion
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/// <summary>
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/// 获取扩展名
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static string GetExt(this string s)
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{
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var ret = string.Empty;
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if (!s.Contains('.')) return ret;
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var temp = s.Split('.');
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ret = temp[temp.Length - 1];
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return ret;
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}
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/// <summary>
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/// 验证QQ格式
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsQq(this string s)
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{
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return s.IsNull() || Regex.IsMatch(s, @"^[1-9]\d{4,15}$");
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}
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/// <summary>
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/// 将字符串根据分隔符转换我List<string>
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/// </summary>
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/// <param name="str"></param>
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/// <param name="split">分隔符</param>
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/// <returns></returns>
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public static List<string> ToListString(this string str, char split)
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{
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return new List<string>(str.Split(split));
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}
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/// <summary>
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/// 判断是否为有效的Email地址
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsEmail(this string s)
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{
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if (!s.IsNull())
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{
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//return Regex.IsMatch(s,
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// @"^(?("")("".+?""@)|(([0-9a-zA-Z]((\.(?!\.))|[-!#\$%&'\*\+/=\?\^`\{\}\|~\w])*)(?<=[0-9a-zA-Z])@))" +
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// @"(?(\[)(\[(\d{1,3}\.){3}\d{1,3}\])|(([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,6}))$");
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const string pattern = @"^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$";
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return Regex.IsMatch(s, pattern);
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}
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return false;
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}
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/// <summary>
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/// 判断是否是url
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsUrl(this string s) {
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if (!s.IsNull()) {
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const string pattern = @"^(http://|https://)?((?:[A-Za-z0-9]+-[A-Za-z0-9]+|[A-Za-z0-9]+)\.)+([A-Za-z]+)[/\?\:]?.*$";
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return Regex.IsMatch(s,pattern);
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}
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return false;
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}
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/// <summary>
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/// 验证是否是合法的电话号码
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsPhone(this string s)
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{
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if (!s.IsNull())
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{
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return Regex.IsMatch(s, @"^\+?((\d{2,4}(-)?)|(\(\d{2,4}\)))*(\d{0,16})*$");
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}
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return true;
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}
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/// <summary>
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/// 验证是否是合法的手机号码
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsMobile(this string s)
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{
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if (!s.IsNull())
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{
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return Regex.IsMatch(s, @"^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$");
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}
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return false;
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}
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/// <summary>
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/// 验证是否是合法的邮编
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsZipCode(this string s)
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{
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if (!s.IsNull())
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{
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return Regex.IsMatch(s, @"[1-9]\d{5}(?!\d)");
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}
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return true;
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}
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/// <summary>
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/// 验证是否是合法的传真
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/// </summary>
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/// <param name="s"></param>
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/// <returns></returns>
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public static bool IsFax(this string s)
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{
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if (!s.IsNull())
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{
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return Regex.IsMatch(s, @"(^[0-9]{3,4}\-[0-9]{7,8}$)|(^[0-9]{7,8}$)|(^\([0-9]{3,4}\)[0-9]{3,8}$)|(^0{0,1}13[0-9]{9}$)");
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}
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return true;
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}
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/// <summary>
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/// 检查字符串是否为有效的int数字
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static bool Isint(this string val)
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{
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if (IsNull(val))
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return false;
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int k;
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return int.TryParse(val, out k);
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}
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/// <summary>
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/// 检查字符串是否为有效的long数字
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static bool Islong(this string val)
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{
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if (IsNull(val))
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return false;
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long k;
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return long.TryParse(val, out k);
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}
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/// <summary>
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/// 字符串转数字，未转换成功返回0
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static int ToInt(this string val)
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{
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if (IsNull(val))
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return 0;
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int k;
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return int.TryParse(val, out k) ? k : 0;
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}
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/// <summary>
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/// 字符串转 浮点Double
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static double ToDouble(this string val) {
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if (IsNull(val)) {
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return 0;
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}
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double values;
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return double.TryParse(val, out values) ? values : 0;
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}
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/// <summary>
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/// 将int间隔字符串转换为list<int>
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/// </summary>
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/// <param name="str"></param>
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/// <param name="Split"></param>
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/// <returns></returns>
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public static List<int> ToIntList(this string str, char Split=',')
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{
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return str.Split(Split).strToIntArray().ToList();
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}
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/// <summary>
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/// 判断是否是json字符串
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static bool IsJson(this string str) {
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try
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{
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System.Text.Json.JsonSerializer.Deserialize<System.Text.Json.JsonElement>(str);
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return true;
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}
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catch {
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return false;
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}
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}
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/// <summary>
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/// 检查字符串是否为有效的INT64数字
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static bool IsInt64(this string val)
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{
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if (IsNull(val))
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return false;
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long k;
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return long.TryParse(val, out k);
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}
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/// <summary>
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/// 验证是否是身份证
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/// </summary>
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/// <param name="ID"></param>
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/// <returns></returns>
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public static bool IsCardId(this string ID)
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{
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var r = false;
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if (IsNull(ID))
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r= false;
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if (ID.Length == 15)
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{
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var date = $"19{ID.Substring(6, 2)}-{ID.Substring(8, 2)}-{ID.Substring(10, 2)}";
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DateTime dt;
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return DateTime.TryParse(date,out dt);
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}
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else if (ID.Length == 18)
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{
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var date = $"{ID.Substring(6, 4)}-{ID.Substring(10, 2)}-{ID.Substring(12, 2)}";
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DateTime dt;
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return DateTime.TryParse(date, out dt);
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}
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else { r= false; }
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return r;
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}
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/// <summary>
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/// 检查字符串是否为有效的double
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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public static bool IsDecimal(this string val)
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{
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if (IsNull(val))
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return false;
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double d;
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return double.TryParse(val, out d);
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}
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/// <summary>
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///检测字符串是否是时间类型
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/// </summary>
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/// <param name="val"></param>
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/// <returns></returns>
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|
|
public static bool IsDateTime(this string val) {
|
|
|
if (IsNull(val))
|
|
|
return false;
|
|
|
DateTime d;
|
|
|
return DateTime.TryParse(val,out d);
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 将时间字符串转为指定格式的字符串 自动判断是否是时间格式，如果不是时间格式则返回原有字符串
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <param name="Format"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string GetDateTimeFormat(this string val,string Format= "yyyy-MM-dd") {
|
|
|
if (Format.IsNull())
|
|
|
{
|
|
|
Format = "yyyy-MM-dd";
|
|
|
}
|
|
|
|
|
|
return val.IsDateTime() ? ((DateTime)val.ToDateTime()).ToString(Format) : val;
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 获取字符串内包换的数字行字符串
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <param name="defaultstr">为空的时候返回的默认字符串</param>
|
|
|
/// <returns></returns>
|
|
|
public static string GetIncludeNumber(this string val,string defaultstr="0") {
|
|
|
if (val.IsNull())
|
|
|
{
|
|
|
return defaultstr;
|
|
|
}
|
|
|
var str = val.GetRegex("[0-9]{1,100}");
|
|
|
if (str.IsNull()) {
|
|
|
str = defaultstr;
|
|
|
}
|
|
|
|
|
|
return str;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 字符串转时间 非时间返回空
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static DateTime? ToDateTime(this string val) {
|
|
|
if (val.IsDateTime())
|
|
|
{
|
|
|
return DateTime.Parse(val);
|
|
|
}
|
|
|
else {
|
|
|
return null;
|
|
|
}
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 将时间类型字符转时间戳 入股不是时间类型则返回0
|
|
|
/// </summary>
|
|
|
/// <param name="Val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static long ToTimestamp(this string Val) {
|
|
|
var time = Val.ToDateTime();
|
|
|
return time != null ? ((DateTime)time).ToTimeStamp() : 0;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 从左边截取N个字符
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string GetLeftStr(this string val,int count=0)
|
|
|
{
|
|
|
if (count > val.Length)
|
|
|
return null;
|
|
|
|
|
|
return val.Substring(0,count);
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 获取一个字符串在另外一个字符串出现的次数
|
|
|
/// </summary>
|
|
|
/// <returns></returns>
|
|
|
public static int GetincludeCount(this string str,string indexstr) {
|
|
|
var val = str.Replace(indexstr,null);
|
|
|
|
|
|
return (str.Length - val.Length) / indexstr.Length;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
///从右边截取N个字符
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <param name="count"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string GetRightStr(this string val, int count=0)
|
|
|
{
|
|
|
|
|
|
if (count > val.Length)
|
|
|
return null;
|
|
|
|
|
|
return val.Substring(val.Length-count, count);
|
|
|
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 索引字符串是否以指定列表中的字符串开头
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <param name="List"></param>
|
|
|
/// <returns></returns>
|
|
|
public static bool IndexStartWithList(this string val, List<string> List) {
|
|
|
var r = false;
|
|
|
foreach (var item in List) {
|
|
|
if (val.StartsWith(item))
|
|
|
{
|
|
|
r=true;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return r;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 将Base64 解析解出 如果失败则返回null
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string Base64ToString(this string val)
|
|
|
{ string r = null;
|
|
|
try
|
|
|
{
|
|
|
r = Encoding.UTF8.GetString(Convert.FromBase64String(val));
|
|
|
}
|
|
|
catch { }
|
|
|
|
|
|
return r;
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 判断是否是Base64
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static bool IsBase64(this string val)
|
|
|
{
|
|
|
bool r = false;
|
|
|
try
|
|
|
{
|
|
|
var getr= Encoding.UTF8.GetString(Convert.FromBase64String(val));
|
|
|
r = true;
|
|
|
}
|
|
|
catch { r = false; }
|
|
|
|
|
|
return r;
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 字符转换为base64 错误或空字符串返回 null
|
|
|
/// </summary>
|
|
|
/// <param name="val"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string ToBase64(this string val)
|
|
|
{
|
|
|
string str = null;
|
|
|
if (val.IsNull())
|
|
|
return null;
|
|
|
try {
|
|
|
|
|
|
str = Convert.ToBase64String(Encoding.UTF8.GetBytes(val));
|
|
|
}
|
|
|
catch {
|
|
|
str = null;
|
|
|
}
|
|
|
|
|
|
return str;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 获取字符串中的数字字符串
|
|
|
/// </summary>
|
|
|
/// <returns></returns>
|
|
|
public static string GetIntStr(this string val)
|
|
|
{
|
|
|
var r = "";
|
|
|
var clist = new List<char>() {'0','1','2','3','4','5','6','7','8','9' };
|
|
|
foreach (var v in val)
|
|
|
{
|
|
|
if (clist.IndexOf(v) >= 0)
|
|
|
{
|
|
|
r+=v;
|
|
|
}
|
|
|
}
|
|
|
return r;
|
|
|
}
|
|
|
public static bool _windows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
|
|
|
/// <summary>
|
|
|
/// 自动调整windows/linux下面文件目录斜杠的处理
|
|
|
/// </summary>
|
|
|
/// <param name="path"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string ReplacePath(this string path)
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(path))
|
|
|
return "";
|
|
|
if (_windows)
|
|
|
return path.Replace("/", "\\");
|
|
|
return path.Replace("\\", "/");
|
|
|
|
|
|
}
|
|
|
public static bool IsInt(this object obj)
|
|
|
{
|
|
|
if (obj == null)
|
|
|
return false;
|
|
|
bool reslut = Int32.TryParse(obj.ToString(), out int _number);
|
|
|
return reslut;
|
|
|
|
|
|
}
|
|
|
public static bool IsDate(this object str)
|
|
|
{
|
|
|
return IsDate(str, out _);
|
|
|
}
|
|
|
public static bool IsDate(this object str, out DateTime dateTime)
|
|
|
{
|
|
|
dateTime = DateTimeExtension.GetUtcDateTime();
|
|
|
if (str == null || str.ToString() == "")
|
|
|
{
|
|
|
return false;
|
|
|
}
|
|
|
return DateTime.TryParse(str.ToString(), out dateTime);
|
|
|
}
|
|
|
/**/
|
|
|
/// <summary>
|
|
|
/// 判断一个字符串是否为合法数字(指定整数位数和小数位数)
|
|
|
/// </summary>
|
|
|
/// <param name="str">字符串</param>
|
|
|
/// <param name="precision">整数位数</param>
|
|
|
/// <param name="scale">小数位数</param>
|
|
|
/// <returns></returns>
|
|
|
public static bool IsNumber(this string str, int precision, int scale)
|
|
|
{
|
|
|
if ((precision == 0) && (scale == 0))
|
|
|
{
|
|
|
return false;
|
|
|
}
|
|
|
string pattern = @"(^\d{1," + precision + "}";
|
|
|
if (scale > 0)
|
|
|
{
|
|
|
pattern += @"\.\d{0," + scale + "}$)|" + pattern;
|
|
|
}
|
|
|
pattern += "$)";
|
|
|
return Regex.IsMatch(str, pattern);
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 根据传入格式判断是否为小数
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <param name="formatString">18,5</param>
|
|
|
/// <returns></returns>
|
|
|
public static bool IsNumber(this string str, string formatString)
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(str))
|
|
|
return false;
|
|
|
int precision = 32;
|
|
|
int scale = 5;
|
|
|
try
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(formatString))
|
|
|
{
|
|
|
precision = 10;
|
|
|
scale = 2;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
string[] numbers = formatString.Split(',');
|
|
|
precision = Convert.ToInt32(numbers[0]);
|
|
|
scale = numbers.Length == 0 ? 2 : Convert.ToInt32(numbers[1]);
|
|
|
}
|
|
|
}
|
|
|
catch { };
|
|
|
return IsNumber(str, precision, scale);
|
|
|
}
|
|
|
|
|
|
public static bool IsNullOrEmpty(this object str)
|
|
|
{
|
|
|
if (str == null)
|
|
|
return true;
|
|
|
return str.ToString() == "";
|
|
|
}
|
|
|
|
|
|
|
|
|
public static int GetInt(this object obj)
|
|
|
{
|
|
|
if (obj == null)
|
|
|
return 0;
|
|
|
int.TryParse(obj.ToString(), out int _number);
|
|
|
return _number;
|
|
|
|
|
|
} /// <summary>
|
|
|
/// 获取 object 中的枚举值
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <returns></returns>
|
|
|
/// <remarks></remarks>
|
|
|
public static long GetLong(this object obj)
|
|
|
{
|
|
|
if (obj == null)
|
|
|
return 0;
|
|
|
|
|
|
try
|
|
|
{
|
|
|
return Convert.ToInt64(Convert.ToDouble(obj));
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
return 0;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 获取 object 中的 float
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <returns></returns>
|
|
|
|
|
|
public static float GetFloat(this object obj)
|
|
|
{
|
|
|
if (System.DBNull.Value.Equals(obj) || null == obj)
|
|
|
return 0;
|
|
|
|
|
|
try
|
|
|
{
|
|
|
return float.Parse(obj.ToString());
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
return 0;
|
|
|
}
|
|
|
}
|
|
|
public static double GetDouble(this object obj)
|
|
|
{
|
|
|
if (System.DBNull.Value.Equals(obj) || null == obj)
|
|
|
return 0;
|
|
|
|
|
|
try
|
|
|
{
|
|
|
return Convert.ToDouble(obj);
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
return 0;
|
|
|
}
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 获取 object 中的 decimal
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <returns></returns>
|
|
|
/// <remarks></remarks>
|
|
|
public static decimal GetDecimal(this object obj)
|
|
|
{
|
|
|
if (System.DBNull.Value.Equals(obj) || null == obj)
|
|
|
return 0;
|
|
|
|
|
|
try
|
|
|
{
|
|
|
return Convert.ToDecimal(obj);
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
return 0;
|
|
|
}
|
|
|
} /// <summary>
|
|
|
/// 获取 object 中的 decimal
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <returns></returns>
|
|
|
/// <remarks></remarks>
|
|
|
|
|
|
public static DateTime? GetDateTime(this object obj)
|
|
|
{
|
|
|
if (System.DBNull.Value.Equals(obj) || null == obj)
|
|
|
return null;
|
|
|
bool result = DateTime.TryParse(obj.ToString(), out DateTime dateTime);
|
|
|
if (!result)
|
|
|
return null;
|
|
|
return dateTime;
|
|
|
}
|
|
|
public static object ParseTo(this string str, string type)
|
|
|
{
|
|
|
switch (type)
|
|
|
{
|
|
|
case "System.Boolean":
|
|
|
return ToBoolean(str);
|
|
|
case "System.SByte":
|
|
|
return ToSByte(str);
|
|
|
case "System.Byte":
|
|
|
return ToByte(str);
|
|
|
case "System.UInt16":
|
|
|
return ToUInt16(str);
|
|
|
case "System.Int16":
|
|
|
return ToInt16(str);
|
|
|
case "System.uInt32":
|
|
|
return ToUInt32(str);
|
|
|
case "System.Int32":
|
|
|
return ToInt32(str);
|
|
|
case "System.UInt64":
|
|
|
return ToUInt64(str);
|
|
|
case "System.Int64":
|
|
|
return ToInt64(str);
|
|
|
case "System.Single":
|
|
|
return ToSingle(str);
|
|
|
case "System.Double":
|
|
|
return ToDouble(str);
|
|
|
case "System.Decimal":
|
|
|
return ToDecimal(str);
|
|
|
case "System.DateTime":
|
|
|
return ToDateTime(str);
|
|
|
case "System.Guid":
|
|
|
return ToGuid(str);
|
|
|
}
|
|
|
throw new NotSupportedException(string.Format("The string of \"{0}\" can not be parsed to {1}", str, type));
|
|
|
}
|
|
|
|
|
|
public static sbyte? ToSByte(this string value)
|
|
|
{
|
|
|
sbyte value2;
|
|
|
if (sbyte.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static byte? ToByte(this string value)
|
|
|
{
|
|
|
byte value2;
|
|
|
if (byte.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static ushort? ToUInt16(this string value)
|
|
|
{
|
|
|
ushort value2;
|
|
|
if (ushort.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static short? ToInt16(this string value)
|
|
|
{
|
|
|
if (short.TryParse(value, out short value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static uint? ToUInt32(this string value)
|
|
|
{
|
|
|
uint value2;
|
|
|
if (uint.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static ulong? ToUInt64(this string value)
|
|
|
{
|
|
|
ulong value2;
|
|
|
if (ulong.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static long? ToInt64(this string value)
|
|
|
{
|
|
|
long value2;
|
|
|
if (long.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static float? ToSingle(this string value)
|
|
|
{
|
|
|
float value2;
|
|
|
if (float.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static decimal? ToDecimal(this string value)
|
|
|
{
|
|
|
decimal value2;
|
|
|
if (decimal.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
public static bool? ToBoolean(this string value)
|
|
|
{
|
|
|
bool value2;
|
|
|
if (bool.TryParse(value, out value2))
|
|
|
{
|
|
|
return value2;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public static Guid? ToGuid(this string str)
|
|
|
{
|
|
|
Guid value;
|
|
|
if (Guid.TryParse(str, out value))
|
|
|
{
|
|
|
return value;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
|
|
|
public static int? ToInt32(this string input)
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(input))
|
|
|
{
|
|
|
return null;
|
|
|
}
|
|
|
int value;
|
|
|
if (int.TryParse(input, out value))
|
|
|
{
|
|
|
return value;
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 将字符串分隔成list
|
|
|
/// </summary>
|
|
|
/// <param name="value"></param>
|
|
|
/// <param name="strSplit"></param>
|
|
|
/// <returns></returns>
|
|
|
public static List<string> StringToList(string value, string strSplit)
|
|
|
{
|
|
|
List<string> lst = new List<string>();
|
|
|
if (string.IsNullOrEmpty(value))
|
|
|
return lst;
|
|
|
else if (value.IndexOf(strSplit) == -1)
|
|
|
return new List<string>() { value };
|
|
|
lst = new List<string>(value.Split(new string[] { strSplit }, StringSplitOptions.RemoveEmptyEntries));
|
|
|
return lst;
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 替换空格字符
|
|
|
/// </summary>
|
|
|
/// <param name="input"></param>
|
|
|
/// <param name="replacement">替换为该字符</param>
|
|
|
/// <returns>替换后的字符串</returns>
|
|
|
public static string ReplaceWhitespace(this string input, string replacement = "")
|
|
|
{
|
|
|
return string.IsNullOrEmpty(input) ? null : Regex.Replace(input, "\\s", replacement, RegexOptions.Compiled);
|
|
|
}
|
|
|
|
|
|
private static char[] randomConstant ={
|
|
|
'0','1','2','3','4','5','6','7','8','9',
|
|
|
'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
|
|
|
'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
|
|
|
};
|
|
|
/// <summary>
|
|
|
/// 生成指定长度的随机数
|
|
|
/// </summary>
|
|
|
/// <param name="length"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string GenerateRandomNumber(this int length)
|
|
|
{
|
|
|
System.Text.StringBuilder newRandom = new System.Text.StringBuilder(62);
|
|
|
Random rd = new Random();
|
|
|
for (int i = 0; i < length; i++)
|
|
|
{
|
|
|
newRandom.Append(randomConstant[rd.Next(62)]);
|
|
|
}
|
|
|
return newRandom.ToString();
|
|
|
}
|
|
|
public static string MaxSubstring(this string origin, int maxLength)
|
|
|
{
|
|
|
return origin.Length >= maxLength ? origin.Substring(0, maxLength) : origin;
|
|
|
}
|
|
|
|
|
|
public static string SafeTrim(this string s)
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(s))
|
|
|
{
|
|
|
//return string.Empty;
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
return s.Trim();
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 超过长度自动加省略号
|
|
|
/// </summary>
|
|
|
/// <param name="source"></param>
|
|
|
/// <param name="num">字节数</param>
|
|
|
/// <param name="isDoubleByte">是否双字节</param>
|
|
|
/// <returns></returns>
|
|
|
public static string Ellipsis(this string source, int num, bool isDoubleByte = true)
|
|
|
{
|
|
|
if (isDoubleByte)
|
|
|
{
|
|
|
num = 2 * num;
|
|
|
}
|
|
|
if (string.IsNullOrWhiteSpace(source))
|
|
|
{
|
|
|
return string.Empty;
|
|
|
}
|
|
|
|
|
|
int len = Encoding.Default.GetBytes(source).Length;
|
|
|
if (len <= num)
|
|
|
{
|
|
|
return source;
|
|
|
}
|
|
|
|
|
|
int curNum = 0;
|
|
|
int curLen = 0;
|
|
|
foreach (var item in source)
|
|
|
{
|
|
|
curNum += Encoding.Default.GetBytes(item.ToString()).Length;
|
|
|
if (curNum > num)
|
|
|
{
|
|
|
break;
|
|
|
}
|
|
|
curLen++;
|
|
|
}
|
|
|
return source.Substring(0, curLen) + "...";
|
|
|
}
|
|
|
|
|
|
public static string TrimAllEmpty(this string source)
|
|
|
{
|
|
|
if (string.IsNullOrWhiteSpace(source))
|
|
|
{
|
|
|
return string.Empty;
|
|
|
}
|
|
|
Regex replaceSpace = new Regex(@"\s{1,}", RegexOptions.IgnoreCase);
|
|
|
return replaceSpace.Replace(source, string.Empty).Trim();
|
|
|
}
|
|
|
public static string GetNeedString(this string s, string reg)
|
|
|
{
|
|
|
|
|
|
Regex r = new Regex(@reg, RegexOptions.IgnoreCase);
|
|
|
return r.Replace(s, string.Empty);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
/// 去除SQL特殊字符
|
|
|
/// </summary>
|
|
|
/// <param name="str"></param>
|
|
|
/// <returns></returns>
|
|
|
public static string ReplaceSQLChar(this string str)
|
|
|
{
|
|
|
if (string.IsNullOrEmpty(str))
|
|
|
return String.Empty;
|
|
|
str = str.Replace("'", "");
|
|
|
str = str.Replace(";", "");
|
|
|
str = str.Replace(",", "");
|
|
|
str = str.Replace("?", "");
|
|
|
str = str.Replace("<", "");
|
|
|
str = str.Replace(">", "");
|
|
|
str = str.Replace("(", "");
|
|
|
str = str.Replace(")", "");
|
|
|
str = str.Replace("@", "");
|
|
|
str = str.Replace("=", "");
|
|
|
str = str.Replace("+", "");
|
|
|
str = str.Replace("*", "");
|
|
|
str = str.Replace("&", "");
|
|
|
str = str.Replace("#", "");
|
|
|
str = str.Replace("%", "");
|
|
|
str = str.Replace("$", "");
|
|
|
|
|
|
//删除与数据库相关的词
|
|
|
str = Regex.Replace(str, "select", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "insert", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "delete from", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "count", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "drop table", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "truncate", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "asc", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "mid", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "char", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "xp_cmdshell", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "exec master", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "net localgroup administrators", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "and", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "net user", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "or", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "net", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "--", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "delete", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "drop", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "script", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "update", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "and", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "chr", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "master", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "truncate", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "declare", "", RegexOptions.IgnoreCase);
|
|
|
str = Regex.Replace(str, "mid", "", RegexOptions.IgnoreCase);
|
|
|
|
|
|
return str;
|
|
|
}
|
|
|
}
|
|
|
}
|