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BookingHeChuan/Myshipping.Core/Helper/NpoiExcelExportHelper.cs

139 lines
7.2 KiB
C#

2 years ago
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.HSSF.Util;
namespace Myshipping.Core.Helper
{
public class NpoiExcelExportHelper
{
private static NpoiExcelExportHelper _exportHelper;
public static NpoiExcelExportHelper _
{
get => _exportHelper ?? (_exportHelper = new NpoiExcelExportHelper());
set => _exportHelper = value;
}
/// <summary>
/// TODO:先创建行,然后在创建对应的列
/// 创建Excel中指定的行
/// </summary>
/// <param name="sheet">Excel工作表对象</param>
/// <param name="rowNum">创建第几行(从0开始)</param>
/// <param name="rowHeight">行高</param>
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public HSSFRow CreateRow(ISheet sheet, int rowNum )
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{
HSSFRow row = (HSSFRow)sheet.CreateRow(rowNum); //创建行
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//row.HeightInPoints = rowHeight; //设置列头行高
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return row;
}
/// <summary>
/// 创建行内指定的单元格
/// </summary>
/// <param name="row">需要创建单元格的行</param>
/// <param name="cellStyle">单元格样式</param>
/// <param name="cellNum">创建第几个单元格(从0开始)</param>
/// <param name="cellValue">给单元格赋值</param>
/// <returns></returns>
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public HSSFCell CreateCells(HSSFRow row, int cellNum, string cellValue, HSSFCellStyle cellStyle=null)
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{
HSSFCell cell = (HSSFCell)row.CreateCell(cellNum); //创建单元格
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if (cellStyle!=null) {
cell.CellStyle = cellStyle; //将样式绑定到单元格
}
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if (!string.IsNullOrWhiteSpace(cellValue))
{
//单元格赋值
cell.SetCellValue(cellValue);
}
return cell;
}
/// <summary>
/// 行内单元格常用样式设置
/// </summary>
/// <param name="workbook">Excel文件对象</param>
/// <param name="hAlignment">水平布局方式</param>
/// <param name="vAlignment">垂直布局方式</param>
/// <param name="fontHeightInPoints">字体大小</param>
/// <param name="isAddBorder">是否需要边框</param>
/// <param name="boldWeight">字体加粗 (None = 0,Normal = 400Bold = 700</param>
/// <param name="fontName">字体(仿宋,楷体,宋体,微软雅黑...与Excel主题字体相对应</param>
/// <param name="isAddBorderColor">是否增加边框颜色</param>
/// <param name="isItalic">是否将文字变为斜体</param>
/// <param name="isLineFeed">是否自动换行</param>
/// <param name="isAddCellBackground">是否增加单元格背景颜色</param>
/// <param name="fillPattern">填充图案样式(FineDots 细点SolidForeground立体前景isAddFillPattern=true时存在)</param>
/// <param name="cellBackgroundColor">单元格背景颜色当isAddCellBackground=true时存在</param>
/// <param name="fontColor">字体颜色</param>
/// <param name="underlineStyle">下划线样式(无下划线[None],单下划线[Single],双下划线[Double],会计用单下划线[SingleAccounting],会计用双下划线[DoubleAccounting]</param>
/// <param name="typeOffset">字体上标下标(普通默认值[None],上标[Sub],下标[Super]),即字体在单元格内的上下偏移量</param>
/// <param name="isStrikeout">是否显示删除线</param>
/// <returns></returns>
public HSSFCellStyle CreateStyle(HSSFWorkbook workbook, HorizontalAlignment hAlignment, VerticalAlignment vAlignment, short fontHeightInPoints, bool isAddBorder, short boldWeight, string fontName = "宋体", bool isAddBorderColor = true, bool isItalic = false, bool isLineFeed = false, bool isAddCellBackground = false, FillPattern fillPattern = FillPattern.NoFill, short cellBackgroundColor = HSSFColor.Yellow.Index, short fontColor = HSSFColor.Black.Index, FontUnderlineType underlineStyle =
FontUnderlineType.None, FontSuperScript typeOffset = FontSuperScript.None, bool isStrikeout = false)
{
HSSFCellStyle cellStyle = (HSSFCellStyle)workbook.CreateCellStyle(); //创建列头单元格实例样式
cellStyle.Alignment = hAlignment; //水平居中
cellStyle.VerticalAlignment = vAlignment; //垂直居中
cellStyle.WrapText = isLineFeed;//自动换行
//背景颜色,边框颜色,字体颜色都是使用 HSSFColor属性中的对应调色板索引关于 HSSFColor 颜色索引对照表详情参考https://www.cnblogs.com/Brainpan/p/5804167.html
//TODO引用了NPOI后可通过ICellStyle 接口的 FillForegroundColor 属性实现 Excel 单元格的背景色设置FillPattern 为单元格背景色的填充样式
//TODO:十分注意要设置单元格背景色必须是FillForegroundColor和FillPattern两个属性同时设置否则是不会显示背景颜色
if (isAddCellBackground)
{
cellStyle.FillForegroundColor = cellBackgroundColor;//单元格背景颜色
cellStyle.FillPattern = fillPattern;//填充图案样式(FineDots 细点SolidForeground立体前景)
}
//是否增加边框
if (isAddBorder)
{
//常用的边框样式 None(没有),Thin(细边框,瘦的),Medium(中等),Dashed(虚线),Dotted(星罗棋布的),Thick(厚的),Double(双倍),Hair(头发)[上右下左顺序设置]
cellStyle.BorderBottom = BorderStyle.Thin;
cellStyle.BorderRight = BorderStyle.Thin;
cellStyle.BorderTop = BorderStyle.Thin;
cellStyle.BorderLeft = BorderStyle.Thin;
}
//是否设置边框颜色
if (isAddBorderColor)
{
//边框颜色[上右下左顺序设置]
cellStyle.TopBorderColor = HSSFColor.DarkGreen.Index;//DarkGreen(黑绿色)
cellStyle.RightBorderColor = HSSFColor.DarkGreen.Index;
cellStyle.BottomBorderColor = HSSFColor.DarkGreen.Index;
cellStyle.LeftBorderColor = HSSFColor.DarkGreen.Index;
}
/**
*
*/
var cellStyleFont = (HSSFFont)workbook.CreateFont(); //创建字体
//假如字体大小只需要是粗体的话直接使用下面该属性即可
//cellStyleFont.IsBold = true;
cellStyleFont.Boldweight = boldWeight; //字体加粗
cellStyleFont.FontHeightInPoints = fontHeightInPoints; //字体大小
cellStyleFont.FontName = fontName;//字体(仿宋,楷体,宋体
cellStyleFont.Color = fontColor;//设置字体颜色
cellStyleFont.IsItalic = isItalic;//是否将文字变为斜体
cellStyleFont.Underline = underlineStyle;//字体下划线
cellStyleFont.TypeOffset = typeOffset;//字体上标下标
cellStyleFont.IsStrikeout = isStrikeout;//是否有删除线
cellStyle.SetFont(cellStyleFont); //将字体绑定到样式
return cellStyle;
}
}
}