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using OfficeOpenXml;
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using OfficeOpenXml.Style;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.IO;
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using System.Linq;
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using System.Windows.Forms;
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using ZJ_BYD.ViewModel;
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namespace ZJ_BYD.Untils
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{
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/// <summary>
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/// Excel操作类
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/// </summary>
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/// Microsoft Excel 11.0 Object Library
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public class ExcelHelper
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{
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/// <summary>
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/// 导出Excel
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="dataSource"></param>
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/// <param name="strFilePath"></param>
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/// <param name="MappingColumns"></param>
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/// <param name="keepTime">是否保留时分秒</param>
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public static void ToExcel<T>(List<T> dataSource, string strFilePath, List<ExcelColumns> MappingColumns = null, bool keepTime = false)
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{
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if (dataSource != null && dataSource.Count > 0)
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{
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DataTable dataTable = ListToDataTable(dataSource, MappingColumns, keepTime);
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ToExcel(dataTable, strFilePath, MappingColumns);
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}
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else
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{
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if (!File.Exists(strFilePath))
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{
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File.Create(strFilePath);
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}
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}
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}
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public static void ToExcel(DataTable dt, string strFilePath, List<ExcelColumns> MappingColumns = null)
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{
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try
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{
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if (dt.Rows.Count == 0)
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{
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if (!File.Exists(strFilePath))
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{
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File.Create(strFilePath);
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}
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return;
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}
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//目录不存在则创建
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var dicpath = System.IO.Path.GetDirectoryName(strFilePath);
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if (!Directory.Exists(dicpath))
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{
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Directory.CreateDirectory(dicpath);
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}
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if (File.Exists(strFilePath))
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{
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File.Delete(strFilePath);
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}
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FileInfo file = new FileInfo(strFilePath);
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//指定EPPlus使用非商业证书
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ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
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using (ExcelPackage ep = new ExcelPackage(file))
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{
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var totalCount = dt.Rows.Count;//总记录条数
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var sheetLimit = 60000;//每个sheet的记录条数
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//计算当前应导出多少个sheet
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var sheetCount = Convert.ToInt32(Math.Round(Convert.ToDouble(totalCount / sheetLimit))) + 1;
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var dts = ExtendMethod.DataTableSplite(dt, sheetLimit);
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for (int j = 0; j < dts.Count; j++)
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{
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dt = dts[j];
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ExcelWorksheet ws = ep.Workbook.Worksheets.Add(string.Format("Sheet{0}", (j + 1)));
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#region 处理不存在的Mapping中的Name
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DataColumn[] arr = new DataColumn[dt.Columns.Count];
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dt.Columns.CopyTo(arr, 0);
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if (MappingColumns != null)
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{
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foreach (var col in arr)
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{
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if (MappingColumns.All(m => m.field != col.ColumnName))
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{
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dt.Columns.Remove(col.ColumnName);
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}
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}
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}
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#endregion
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ws.Cells["A1"].LoadFromDataTable(dt, true);
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ws.Cells.Style.Fill.PatternType = ExcelFillStyle.Solid;
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//单元格背景颜色
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ws.Cells.Style.Fill.BackgroundColor.SetColor(Color.White);
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if (MappingColumns != null)
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{
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for (int i = 0; i < dt.Columns.Count; i++)
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{
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var strColName = dt.Columns[i].ColumnName;
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var map = MappingColumns.FirstOrDefault(m => m.field == strColName);
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if (map != null)
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{
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ws.Cells[1, i + 1].Value = map.title;
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}
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try
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{
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var val = ws.Cells[2, i + 1].Value;
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var lenth = val == null ? 0 : val.ToString().Length;
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ws.Column(i + 1).Width = lenth > 10 ? lenth + 6 : 10;
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}
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catch (Exception)
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{
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}
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ws.Cells[1, i + 1].Style.Fill.PatternType = ExcelFillStyle.Solid;
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ws.Cells[1, i + 1].Style.Border.BorderAround(ExcelBorderStyle.Thin, Color.FromArgb(191, 191, 191));
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ws.Cells[1, i + 1].Style.Fill.BackgroundColor.SetColor(Color.FromArgb(0, 151, 167));//设置单元格背景色
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ws.Cells[1, i + 1].Style.Font.Color.SetColor(Color.White);
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}
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}
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#region 设置导出样式
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ws.Row(1).Height = 18;
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ws.Row(1).Style.Font.Bold = true;
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ws.Row(1).Style.HorizontalAlignment = ExcelHorizontalAlignment.Center;
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//设置字体，也可以是中文，比如：宋体
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ws.Cells.Style.Font.Name = "宋体";
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//字体加粗
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//字体大小
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ws.Cells.Style.Font.Size = 12;
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//字体颜色
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// ws.Cells.Style.Font.Color.SetColor(System.Drawing.Color.Black);
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//单元格背景样式，要设置背景颜色必须先设置背景样式
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//ws.Cells.Style.ShrinkToFit = true;//单元格自动适应大小
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ws.Cells.Style.Border.Top.Style = ExcelBorderStyle.Thin;
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ws.Cells.Style.Border.Top.Color.SetColor(Color.Gray);
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ws.Cells.Style.Border.Bottom.Style = ExcelBorderStyle.Thin;
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ws.Cells.Style.Border.Bottom.Color.SetColor(Color.Gray);
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ws.Cells.Style.Border.Left.Style = ExcelBorderStyle.Thin;
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ws.Cells.Style.Border.Left.Color.SetColor(Color.Gray);
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ws.Cells.Style.Border.Right.Style = ExcelBorderStyle.Thin;
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ws.Cells.Style.Border.Right.Color.SetColor(Color.Gray);
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//设置单元格所有边框样式和颜色
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//ws.Cells.Style.Border.BorderAround(ExcelBorderStyle.Thin, System.Drawing.ColorTranslator.FromHtml("#0097DD"));
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#endregion
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}
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ep.Save();
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}
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}
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catch (Exception ex)
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{
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var errMsg = ex == null ? "未知异常" : ex.Message;
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MessageBox.Show($"ToExcel方法出发异常:{errMsg}，请联系管理员！");
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}
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}
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public static void ToExcel(DataTable dt, string strTemplete, string strExcelFile, int intSheet)
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{
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FileInfo strTemp = new FileInfo(strTemplete);
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FileInfo strNewTemp = new FileInfo(strExcelFile);
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try
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{
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//指定EPPlus使用非商业证书
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ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
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ExcelPackage package = new ExcelPackage(strTemp);
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int vSheetCount = package.Workbook.Worksheets.Count; //获取总Sheet页
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ExcelWorksheet worksheet = package.Workbook.Worksheets[intSheet];//选定 指定页
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//int maxColumnNum = ws.Dimension.End.Column;//最大列
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//int minColumnNum = ws.Dimension.Start.Column;//最小列
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//int maxRowNum = ws.Dimension.End.Row;//最小行
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//int minRowNum = ws.Dimension.Start.Row;//最大行
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worksheet.Cells["A1"].LoadFromDataTable(dt, true);
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package.SaveAs(strNewTemp);
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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public static void ToExcel2(DataTable dt1, DataTable dt2, string strTemplete, string strExcelFile)
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{
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FileInfo strTemp = new FileInfo(strTemplete);
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FileInfo strNewTemp = new FileInfo(strExcelFile);
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try
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{
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//指定EPPlus使用非商业证书
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ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
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ExcelPackage package = new ExcelPackage(strTemp);
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int vSheetCount = package.Workbook.Worksheets.Count; //获取总Sheet页
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ExcelWorksheet worksheet = package.Workbook.Worksheets["Sheet2"];//选定 表
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worksheet.Cells["A1"].LoadFromDataTable(dt1, true);
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worksheet = package.Workbook.Worksheets["Sheet3"];//选定 指定页
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worksheet.Cells["A1"].LoadFromDataTable(dt2, true);
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package.SaveAs(strNewTemp);
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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public static DataTable GetExcel(string strFilePath, string tbName = "dt1")
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{
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try
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{
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FileInfo file = new FileInfo(strFilePath);
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//指定EPPlus使用非商业证书
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ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
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using (ExcelPackage ep = new ExcelPackage(file))
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{
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ExcelWorksheet ws = ep.Workbook.Worksheets.FirstOrDefault();
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int maxColumnNum = ws.Dimension.End.Column;//最大列
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int minColumnNum = ws.Dimension.Start.Column;//最小列
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int maxRowNum = ws.Dimension.End.Row;//最小行
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int minRowNum = ws.Dimension.Start.Row;//最大行
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DataTable vTable = new DataTable();
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DataColumn vC;
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for (int j = 1; j <= maxColumnNum; j++)
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{
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vC = new DataColumn("col_" + j, typeof(string));
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vTable.Columns.Add(vC);
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}
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for (int n = 2; n <= maxRowNum; n++)
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{
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DataRow vRow = vTable.NewRow();
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for (int m = 1; m <= maxColumnNum; m++)
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{
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vRow[m - 1] = ws.Cells[n, m].Value;
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}
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vTable.Rows.Add(vRow);
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}
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return vTable;
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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}
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/// <summary>
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/// 读取Excel到DataTable
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/// </summary>
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/// <param name="strFilePath">文件路径</param>
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/// <param name="tbIndex">Sheet索引</param>
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/// <param name="maxColumnNum">总列数</param>
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/// <returns></returns>
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public static DataTable GetExcel(string strFilePath, int tbIndex,out int maxColumnNum)
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{
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maxColumnNum = 0;
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try
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{
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FileInfo file = new FileInfo(strFilePath);
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//指定EPPlus使用非商业证书
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ExcelPackage.LicenseContext = OfficeOpenXml.LicenseContext.NonCommercial;
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using (ExcelPackage ep = new ExcelPackage(file))
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{
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ExcelWorksheet ws = ep.Workbook.Worksheets[tbIndex];
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maxColumnNum = ws.Dimension.End.Column;//最大列
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int minColumnNum = ws.Dimension.Start.Column;//最小列
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int maxRowNum = ws.Dimension.End.Row;//最大行
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int minRowNum = ws.Dimension.Start.Row;//最小行
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DataTable vTable = new DataTable();
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DataColumn vC;
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for (int j = 1; j <= maxColumnNum; j++)
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{
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vC = new DataColumn("col_" + j, typeof(string));
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vTable.Columns.Add(vC);
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}
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for (int n = 2; n <= maxRowNum; n++)
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{
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DataRow vRow = vTable.NewRow();
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for (int m = 1; m <= maxColumnNum; m++)
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{
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vRow[m - 1] = ws.Cells[n, m].Value;
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}
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vTable.Rows.Add(vRow);
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}
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return vTable;
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}
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}
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catch (Exception ex)
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{
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var errMsg = ex == null ? "未知异常" : ex.Message;
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MessageBox.Show($"GetExcel方法出发异常:{errMsg}，请联系管理员！");
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return null;
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}
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}
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/// <summary>
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/// 类型转换
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="entitys"></param>
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/// <returns></returns>
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public static DataTable ListToDataTable<T>(List<T> entitys, List<ExcelColumns> MappingColumns = null, bool keepTime = false)
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{
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//检查实体集合不能为空
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if (entitys == null || entitys.Count < 1)
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{
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throw new Exception("The list is empty");
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}
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//取出第一个实体的所有Propertie
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Type entityType = entitys[0].GetType();
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var entityProperties = entityType.GetProperties().Where(m => (!m.GetAccessors()[0].IsVirtual) && (!(m.PropertyType.Name.ToLower() != "string" && m.PropertyType.IsClass))).ToList();
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DataTable dt = new DataTable();
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if (MappingColumns != null)
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{
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foreach (var item in MappingColumns)
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{
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var prop = entityProperties.FirstOrDefault(m => m.Name == item.field);
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if (prop != null)
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{
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var tp = prop.PropertyType;
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if (tp.IsGenericType &&
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//判断是否为nullable泛型类
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tp.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
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{
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//如果tp为nullable类，声明一个NullableConverter类，该类提供从Nullable类到基础基元类型的转换
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if (tp.Name.ToLower() == "datetime" || (tp.GenericTypeArguments != null && tp.GenericTypeArguments.Length > 0 && tp.GenericTypeArguments[0].Name.ToLower() == "datetime"))
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{
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dt.Columns.Add(prop.Name, typeof(string));
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}
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else
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{
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dt.Columns.Add(prop.Name, tp.GenericTypeArguments[0]);
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}
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}
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else
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{
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if (tp.Name.ToLower() == "datetime")
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{
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dt.Columns.Add(prop.Name, typeof(string));
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}
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else
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{
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dt.Columns.Add(prop.Name, tp);
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}
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}
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}
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}
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//将所有entity添加到DataTable中
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foreach (object entity in entitys)
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{
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//检查所有的的实体都为同一类型
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object[] entityValues = new object[MappingColumns.Count];
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var i = 0;
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DateTime dateTime = DateTime.Now;
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foreach (var item in MappingColumns)
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{
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var prop = entityProperties.FirstOrDefault(m => m.Name == item.field);
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if (prop != null)
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{
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var objval = prop.GetValue(entity, null);
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var tp = prop.PropertyType;
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if (tp.IsGenericType &&
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//判断是否为nullable泛型类
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tp.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
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{
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//如果tp为nullable类，声明一个NullableConverter类，该类提供从Nullable类到基础基元类型的转换
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if (tp.Name.ToLower() == "datetime" || (tp.GenericTypeArguments != null && tp.GenericTypeArguments.Length > 0 && tp.GenericTypeArguments[0].Name.ToLower() == "datetime"))
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{
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if (objval != null && DateTime.TryParse(objval.ToString(), out dateTime))
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{
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if (keepTime)
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{
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entityValues[i++] = dateTime.ToString("yyyy-MM-dd HH:mm:ss");
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}
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else
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{
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entityValues[i++] = dateTime.ToString("yyyy-MM-dd");
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}
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}
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}
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else
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{
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NullableConverter nullableConverter = new NullableConverter(tp);
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if (objval != null)
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{
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entityValues[i++] = nullableConverter.ConvertFromString(objval.ToString());
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}
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else
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{
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entityValues[i++] = null;
|
|
|
}
|
|
|
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
if (tp.Name.ToLower() == "datetime")
|
|
|
{
|
|
|
if (objval != null && DateTime.TryParse(objval.ToString(), out dateTime))
|
|
|
{
|
|
|
if (keepTime)
|
|
|
{
|
|
|
entityValues[i++] = dateTime.ToString("yyyy-MM-dd HH:mm:ss");
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
entityValues[i++] = dateTime.ToString("yyyy-MM-dd");
|
|
|
}
|
|
|
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
entityValues[i++] = "";
|
|
|
}
|
|
|
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
entityValues[i++] = objval;
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
}
|
|
|
}
|
|
|
dt.Rows.Add(entityValues);
|
|
|
}
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
for (int i = 0; i < entityProperties.Count; i++)
|
|
|
{
|
|
|
dt.Columns.Add(entityProperties[i].Name, entityProperties[i].PropertyType);
|
|
|
}
|
|
|
//将所有entity添加到DataTable中
|
|
|
foreach (object entity in entitys)
|
|
|
{
|
|
|
//检查所有的的实体都为同一类型
|
|
|
|
|
|
object[] entityValues = new object[entityProperties.Count];
|
|
|
for (int i = 0; i < entityProperties.Count; i++)
|
|
|
{
|
|
|
entityValues[i] = entityProperties[i].GetValue(entity, null);
|
|
|
}
|
|
|
dt.Rows.Add(entityValues);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return dt;
|
|
|
}
|
|
|
}
|
|
|
}
|