标签：
先来写一段代码，这段代码也是我在网上找的，但是他那个原先有点问题，我对他那个进行了修改，这个是暂时的，现在在上班，我把代码弄好，晚上再写总结~
1 public int StreamExport(System.Data.DataTable dt, List<string> ColNames, string fileName) 2 { 3 4 if (string.IsNullOrEmpty(fileName)) return 0; 5 6 StringBuilder content = new StringBuilder(); 7 StringBuilder strtitle = new StringBuilder(); 8 content.Append("<html xmlns:o=‘urn:schemas-microsoft-com:office:office‘ xmlns:x=‘urn:schemas-microsoft-com:office:excel‘ xmlns=‘http://www.w3.org/TR/REC-html40‘>"); 9 content.Append("<head><title></title><meta http-equiv=‘Content-Type‘ content=\"text/html; charset=gb2312\">"); 10 //注意：[if gte mso 9]到[endif]之间的代码，用于显示Excel的网格线，若不想显示Excel的网格线，可以去掉此代码 11 content.Append("<!--[if gte mso 9]>"); 12 content.Append("<xml>"); 13 content.Append(" <x:ExcelWorkbook>"); 14 content.Append(" <x:ExcelWorksheets>"); 15 content.Append(" <x:ExcelWorksheet>"); 16 content.Append(" <x:Name>Sheet1</x:Name>"); 17 content.Append(" <x:WorksheetOptions>"); 18 content.Append(" <x:Print>"); 19 content.Append(" <x:ValidPrinterInfo />"); 20 content.Append(" </x:Print>"); 21 content.Append(" </x:WorksheetOptions>"); 22 content.Append(" </x:ExcelWorksheet>"); 23 content.Append(" </x:ExcelWorksheets>"); 24 content.Append("</x:ExcelWorkbook>"); 25 content.Append("</xml>"); 26 content.Append("<![endif]-->"); 27 content.Append("</head><body><table style=‘border-collapse:collapse;table-layout:fixed;‘><tr>"); 28 for (int i = 0; i < ColNames.Count; i++) 29 { 30 31 content.Append("<td><b>" + ColNames[i] + "</b></td>"); 32 } 33 content.Append("</tr>\n"); 34 35 for (int j = 0; j < dt.Rows.Count; j++) 36 { 37 content.Append("<tr>"); 38 for (int k = 0; k < dt.Columns.Count; k++) 39 { 40 object obj = dt.Rows[j][k]; 41 Type type = obj.GetType(); 42 if (type.Name == "Int32" || type.Name == "Single" || type.Name == "Double" || type.Name == "Decimal") 43 { 44 double d = obj == DBNull.Value ? 0.0d : Convert.ToDouble(obj); 45 if (type.Name == "Int32" || (d - Math.Truncate(d) == 0)) 46 content.AppendFormat("<td style=‘vnd.ms-excel.numberformat:#,##0‘>{0}</td>", obj); 47 else 48 content.AppendFormat("<td style=‘vnd.ms-excel.numberformat:#,##0.00‘>{0}</td>", obj); 49 } 50 else 51 content.AppendFormat("<td style=‘vnd.ms-excel.numberformat:@‘>{0}</td>", obj); 52 } 53 content.Append("</tr>\n"); 54 } 55 content.Append("</table></body></html>"); 56 content.Replace(" ", ""); 57 Response.Clear(); 58 Response.Buffer = true; 59 Response.ContentType = "application/vnd.ms-excel"; //"application/ms-excel"; 60 Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312"); 61 Response.Charset = "gb2312"; 62 fileName = System.Web.HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8); 63 Response.AppendHeader("Content-Disposition", "attachment; filename=" + fileName); 64 Response.Write(content.ToString()); 65 Response.Output.Flush(); 66 //pages.Response.End(); //注意，若使用此代码结束响应可能会出现“由于代码已经过优化或者本机框架位于调用堆栈之上,无法计算表达式的值。”的异常。 67 HttpContext.Current.ApplicationInstance.CompleteRequest(); //用此行代码代替上一行代码，则不会出现上面所说的异常。 68 return 1; 69 }
asp.netDataTable导出excel方法-我的总结
标签：
原文地址：http://www.cnblogs.com/junshijie/p/5085384.html
