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using System;
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using System.Linq;
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using System.Text.RegularExpressions;
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namespace Myshipping.Core;
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/// <summary>
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/// 字符串验证帮助类
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/// </summary>
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public static class ValidatorUtil
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{
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#region 验证输入字符串为数字(带小数)
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/// <summary>
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/// 验证输入字符串为带小数点正数
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsNumber(this string str)
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{
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return Regex.IsMatch(str, "^([0]|([1-9]+\\d{0,}?))(.[\\d]+)?$");
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}
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/// <summary>
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/// 验证输入字符串为带小数点正负数
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsNumberic(this string str)
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{
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return Regex.IsMatch(str, "^-?\\d+$|^(-?\\d+)(\\.\\d+)?$");
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}
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#endregion
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#region 验证中国电话格式是否有效，格式010-85849685
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/// <summary>
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/// 验证中国电话格式是否有效，格式010-85849685
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsTel(this string str)
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{
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return Regex.IsMatch(str, @"^(0[0-9]{2,3}\-)?([2-9][0-9]{6,7})+(\-[0-9]{1,4})?$", RegexOptions.IgnoreCase);
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}
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#endregion
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#region 验证输入字符串为电话号码
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/// <summary>
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/// 验证输入字符串为电话号码
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsPhone(this string str)
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{
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return Regex.IsMatch(str, @"(^(\d{2,4}[-_－—]?)?\d{3,8}([-_－—]?\d{3,8})?([-_－—]?\d{1,7})?$)|(^0?1[35]\d{9}$)");
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//弱一点的验证： @"\d{3,4}-\d{7,8}"
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}
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#endregion
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#region 验证是否是有效传真号码
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/// <summary>
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/// 验证是否是有效传真号码
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsFax(this string str)
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{
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return Regex.IsMatch(str, @"^[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+$");
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}
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#endregion
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#region 验证手机号是否合法
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/// <summary>
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/// 验证手机号是否合法 号段为13,14,15,16,17,18,19 0，86开头将自动识别
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsMobile(this string str)
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{
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if (!str.StartsWith("1"))
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{
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str = str.TrimStart('8', '6').TrimStart('0');
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}
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return Regex.IsMatch(str, @"^(13|14|15|16|17|18|19)\d{9}$");
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}
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#endregion
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#region 验证身份证是否有效
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/// <summary>
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/// 验证身份证是否有效
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsIdCard(this string str)
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{
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return str.Length switch
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{
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18 => str.IsIdCard18(),
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15 => str.IsIdCard15(),
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_ => false
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};
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}
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/// <summary>
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/// 验证输入字符串为18位的身份证号码
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsIdCard18(this string str)
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{
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if (long.TryParse(str.Remove(17), out var n) == false || n < Math.Pow(10, 16) ||
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long.TryParse(str.Replace('x', '0').Replace('X', '0'), out n) == false)
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{
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return false; //数字验证
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}
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const string address =
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"11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
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if (address.IndexOf(str.Remove(2), StringComparison.Ordinal) == -1)
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{
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return false; //省份验证
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}
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var birth = str.Substring(6, 8).Insert(6, "-").Insert(4, "-");
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if (DateTime.TryParse(birth, out _) == false)
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{
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return false; //生日验证
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}
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var arrVarIfyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
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var wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
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var ai = str.Remove(17).ToCharArray();
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var sum = 0;
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for (var i = 0; i < 17; i++)
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{
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sum += int.Parse(wi[i]) * int.Parse(ai[i].ToString());
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}
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// ReSharper disable once UselessBinaryOperation
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Math.DivRem(sum, 11, out var y);
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return arrVarIfyCode[y] == str.Substring(17, 1).ToLower();
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}
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/// <summary>
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/// 验证输入字符串为15位的身份证号码
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsIdCard15(this string str)
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{
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if (long.TryParse(str, out var n) == false || n < Math.Pow(10, 14))
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{
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return false; //数字验证
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}
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const string address =
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"11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
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if (address.IndexOf(str.Remove(2), StringComparison.Ordinal) == -1)
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{
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return false; //省份验证
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}
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var birth = str.Substring(6, 6).Insert(4, "-").Insert(2, "-");
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return DateTime.TryParse(birth, out _);
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}
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#endregion
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#region 验证是否是有效邮箱地址
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/// <summary>
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/// 验证是否是有效邮箱地址
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsEmail(this string str)
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{
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return Regex.IsMatch(str,
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@"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
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}
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/// <summary>
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/// 验证是否是有效QQ邮箱地址
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsQqEmail(this string str)
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{
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return Regex.IsMatch(str, @"[1-9]\d{4,10}@qq\.com");
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}
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#endregion
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#region 验证是否只含有汉字
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/// <summary>
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/// 验证是否只含有汉字
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/// </summary>
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/// <param name="strLn">输入字符</param>
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/// <returns></returns>
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public static bool IsOnlyChinese(this string strLn)
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{
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return Regex.IsMatch(strLn, @"^[\u4e00-\u9fa5]+$");
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}
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#endregion
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#region 是否有多余的字符 防止SQL注入
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/// <summary>
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/// 是否有多余的字符 防止SQL注入
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns></returns>
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public static bool IsBadString(this string str)
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{
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if (string.IsNullOrEmpty(str))
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return false;
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//列举一些特殊字符串
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const string badChars =
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"@,*,#,$,!,+,',=,--,%,^,&,?,(,), <,>,[,],{,},/,\\,;,:,\",\"\",delete,update,drop,alert,select";
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var arraryBadChar = badChars.Split(',');
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return arraryBadChar.Any(t => !str.Contains(t));
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}
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#endregion
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#region 是否由数字、26个英文字母或者下划线組成的字串
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/// <summary>
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/// 是否由数字、26个英文字母或者下划线組成的字串
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns></returns>
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public static bool IsNzx(this string str)
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{
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return Regex.Match(str, "^[0-9a-zA-Z_]+$").Success;
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}
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#endregion
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#region 由数字、26个英文字母、汉字組成的字串
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/// <summary>
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/// 由数字、26个英文字母、汉字組成的字串
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns></returns>
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public static bool IsSzzmChinese(this string str)
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{
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return Regex.Match(str, @"^[0-9a-zA-Z\u4e00-\u9fa5]+$").Success;
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}
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#endregion
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#region 由数字、26个英文字母組成的字串
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/// <summary>
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/// 是否由数字、26个英文字母組成的字串
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns></returns>
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public static bool IsSzzm(this string str)
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{
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return Regex.Match(str, @"^[0-9a-zA-Z]+$").Success;
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}
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#endregion
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#region 验证输入字符串为邮政编码
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/// <summary>
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/// 验证输入字符串为邮政编码
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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public static bool IsPostCode(this string str)
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{
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return Regex.IsMatch(str, @"\d{6}");
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}
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#endregion
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#region 检查对象的输入长度
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/// <summary>
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/// 检查对象的输入长度
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <param name="length">指定的长度</param>
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/// <returns>false 太长，true -太短</returns>
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public static bool CheckLength(this string str, int length)
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{
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if (str.Length > length)
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{
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return false; //长度太长
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}
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return str.Length >= length;
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}
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#endregion
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#region 判断用户输入是否为日期
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/// <summary>
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/// 判断用户输入是否为日期
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/// </summary>
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/// <param name="str">输入字符</param>
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/// <returns>返回一个bool类型的值</returns>
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/// <remarks>
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/// 可判断格式如下（其中-可替换为/，不影响验证)
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/// YYYY | YYYY-MM | YYYY-MM-DD | YYYY-MM-DD HH:MM:SS | YYYY-MM-DD HH:MM:SS.FFF
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/// </remarks>
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public static bool IsDateTime(this string str)
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{
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if (null == str)
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{
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return false;
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}
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const string regexDate =
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@"[1-2]{1}[0-9]{3}((-|\/|\.){1}(([0]?[1-9]{1})|(1[0-2]{1}))((-|\/|\.){1}((([0]?[1-9]{1})|([1-2]{1}[0-9]{1})|(3[0-1]{1})))( (([0-1]{1}[0-9]{1})|2[0-3]{1}):([0-5]{1}[0-9]{1}):([0-5]{1}[0-9]{1})(\.[0-9]{3})?)?)?)?$";
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if (!Regex.IsMatch(str, regexDate))
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return false;
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//以下各月份日期验证，保证验证的完整性
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int indexY;
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int indexM;
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int indexD;
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if (-1 != (indexY = str.IndexOf("-", StringComparison.Ordinal)))
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{
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indexM = str.IndexOf("-", indexY + 1, StringComparison.Ordinal);
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indexD = str.IndexOf(":", StringComparison.Ordinal);
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}
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else
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{
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indexY = str.IndexOf("/", StringComparison.Ordinal);
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indexM = str.IndexOf("/", indexY + 1, StringComparison.Ordinal);
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indexD = str.IndexOf(":", StringComparison.Ordinal);
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}
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//不包含日期部分，直接返回true
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if (-1 == indexM)
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return true;
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if (-1 == indexD)
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{
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indexD = str.Length + 3;
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}
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var iYear = Convert.ToInt32(str.Substring(0, indexY));
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var iMonth = Convert.ToInt32(str.Substring(indexY + 1, indexM - indexY - 1));
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var iDate = Convert.ToInt32(str.Substring(indexM + 1, indexD - indexM - 4));
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//判断月份日期
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if ((iMonth < 8 && 1 == iMonth % 2) || (iMonth > 8 && 0 == iMonth % 2))
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{
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if (iDate < 32)
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return true;
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}
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else
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{
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if (iMonth != 2)
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{
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if (iDate < 31)
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return true;
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}
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else
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{
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//闰年
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if ((0 == iYear % 400) || (0 == iYear % 4 && 0 < iYear % 100))
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{
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if (iDate < 30)
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return true;
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}
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else
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{
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if (iDate < 29)
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return true;
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}
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}
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}
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return false;
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}
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#endregion
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}
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