使用EPPlus -export excel，将范围设置为文本到特定列

我正在使用EPPlus将数据导出到excel（来自MemoryStream ），下面是代码

 private static MemoryStream ExportToExcelAsStram(DataSet ds) { MemoryStream ms = new MemoryStream(); ExcelPackage package = new ExcelPackage(ms); try { for (int i = 0; i < ds.Tables.Count; i++) { ExcelWorksheet worksheet = package.Workbook.Worksheets.Add((ds.Tables[i].Rows[i]["Date"]).ToString()); using (ExcelRange rng = worksheet.Cells["B1 : B" + (ds.Tables[i].Rows.Count + 1)]) { rng.Style.Numberformat.Format = "#"; } //worksheet.Cells["B1 : B" + (ds.Tables[i].Rows.Count + 1)].Style.Numberformat.Format = "@"; worksheet.Cells["A1"].LoadFromDataTable(ds.Tables[i], true); //Format the header for column 1-9 using (ExcelRange range = worksheet.Cells[1, 1, 1, 12]) { range.Style.Font.Bold = true; range.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid; range.Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.DarkRed); range.Style.Font.Color.SetColor(System.Drawing.Color.White); } worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin, System.Drawing.Color.Black); worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.VerticalAlignment = ExcelVerticalAlignment.Center; worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.HorizontalAlignment = ExcelHorizontalAlignment.Center; } } catch (Exception ex) { throw ex; } package.Save(); ms.Position = 0; return ms; } 

我需要将B列的格式设置为文本。 我给了专门为列B的范围，但一旦生成的Excel，这个格式是适用于所有其他列。 请帮我解决这个…在此先感谢。

Answer 1

加载后，将样式应用于范围：

 worksheet.Cells["A1"].LoadFromDataTable(ds.Tables[i], true); ExcelRange rng = worksheet.Cells["B1:B" + (ds.Tables[i].Rows.Count + 1)]; rng.Style.Numberformat.Format = "#"; 

顺便说一句：使用excelrange是不必要的： EPPlus – 我需要调用像ExcelRange对象的Dispose？

Answer 2

从正在构build的string地址中删除空格"B1 : B" ：

 using (ExcelRange rng = worksheet.Cells["B1:B" + (dt.Rows.Count + 1)]) { rng.Style.Numberformat.Format = "0.00"; } 

这可能会翘首以盼。

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 [TestMethod] public void ExportToExcelAsStram() { //http://stackoverflow.com/questions/28714488/using-epplus-export-to-excel-set-range-as-text-to-a-specific-column //Throw in some data var dt = new DataTable("tblData"); dt.Columns.Add(new DataColumn("Date", typeof(DateTime))); dt.Columns.Add(new DataColumn("Col2", typeof(int))); dt.Columns.Add(new DataColumn("Col3", typeof(int))); for (var i = 0; i < 20; i++) { var row = dt.NewRow(); row["Date"] = DateTime.Now.AddDays(i); row["Col2"] = i * 10; row["Col3"] = i * 100; dt.Rows.Add(row); } var ds = new DataSet(); ds.Tables.Add(dt); MemoryStream ms = new MemoryStream(); ExcelPackage package = new ExcelPackage(ms); try { for (int i = 0; i < ds.Tables.Count; i++) { ExcelWorksheet worksheet = package.Workbook.Worksheets.Add((ds.Tables[i].Rows[i]["Date"]).ToString()); using (ExcelRange rng = worksheet.Cells["B1:B" + (ds.Tables[i].Rows.Count + 1)]) { rng.Style.Numberformat.Format = "0.00"; } //worksheet.Cells["B1 : B" + (ds.Tables[i].Rows.Count + 1)].Style.Numberformat.Format = "@"; worksheet.Cells["A1"].LoadFromDataTable(ds.Tables[i], true); //Format the header for column 1-9 using (ExcelRange range = worksheet.Cells[1, 1, 1, 12]) { range.Style.Font.Bold = true; range.Style.Fill.PatternType = OfficeOpenXml.Style.ExcelFillStyle.Solid; range.Style.Fill.BackgroundColor.SetColor(System.Drawing.Color.DarkRed); range.Style.Font.Color.SetColor(System.Drawing.Color.White); } worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.Border.BorderAround(OfficeOpenXml.Style.ExcelBorderStyle.Thin, System.Drawing.Color.Black); worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.VerticalAlignment = ExcelVerticalAlignment.Center; worksheet.Cells["A1:L" + (ds.Tables[i].Rows.Count + 1)].Style.HorizontalAlignment = ExcelHorizontalAlignment.Center; } } catch (Exception ex) { throw ex; } package.Save(); ms.Position = 0; //return ms; var existingFile = new FileInfo(@"c:\temp\temp.xlsx"); if (existingFile.Exists) existingFile.Delete(); ms.WriteTo(new FileStream(existingFile.FullName, FileMode.Create)); }