在ASP.NET中将DataTable导出到Excel
当调用这个方法时，整个htmldevise的页面随着数据移植到excel。 我只想要导出数据，不应该使用htmldevise。 我无法find解决scheme，请有人帮助解决。
public void ExportToExcel(DataTable dtExportData) { string strReportName = string.Empty; //StringWriter oStringWriter = null; //Html32TextWriter oHtmlTextWriter = null; //TableOneDayPassReport.Visible = true; ExcelGrid.EnableViewState = false; ExcelGrid.DataSource = dtExportData; ExcelGrid.DataBind(); Response.Clear(); Response.ClearHeaders(); Response.Cache.SetCacheability(HttpCacheability.Private); Response.AddHeader("content-disposition", "attachment;filename=OwnTransportDetails.xls"); Response.Charset = ""; Response.ContentType = "application/vnd.ms-excel"; System.IO.StringWriter stringWrite = new System.IO.StringWriter(); System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite); //TableOneDayPassReport.RenderControl(htmlWrite); Response.Write(stringWrite.ToString()); //Response.End(); // strReportName = dtExportData.TableName; // Report_Month.InnerHtml = "<b>" + strReportName + " Report</b><br />"; // ReportHead.Attributes.Add("style", "DISPLAY: block; VISIBILITY: visible"); // TableOneDayPassReport.Visible = true; // //oStringWriter = new StringWriter(); // //oHtmlTextWriter = new Html32TextWriter(oStringWriter); // ExcelGrid.EnableViewState = false; // ExcelGrid.DataSource = dtExportData; // ExcelGrid.DataBind(); // Response.Clear(); // Response.Buffer = true; // Response.AppendHeader("Content-Disposition", "attachment; filename=" + strReportName + ".xls"); // Response.ContentType = "application/vnd.ms-excel"; // TableOneDayPassReport.RenderControl(oHtmlTextWriter); // Response.Write(oStringWriter.ToString()); // HttpContext.Current.ApplicationInstance.CompleteRequest(); //// Response.End(); } 您告诉浏览器将数据作为Microsoft Excel处理，但返回HTML数据。 Microsoft Excel足够聪明，可以显示HTML数据并显示数据。
如果您只想导出数据，则应使用EPPlus或Microsoft自己的SDK等库，并在服务器上创buildExcel表单。 然后，返回这张表。
通过这个代码检查这个代码，你可以下载excel格式的.csv文件
在这里你需要创build文件夹下载，并从该文件夹你需要给服务器path。 href="../../download/Orders.csv"
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.IO; using System.Text; public partial class Admin_export_order : System.Web.UI.Page { DBAccess dbAcc = new DBAccess(); DataTable dt = new DataTable(); protected void Page_Load(object sender, EventArgs e) { if (Session["admin_id"] == null) Response.Redirect("~/jbs/admin/login"); if (!IsPostBack) { view_edit_supplier_BAL objHelp = new view_edit_supplier_BAL(); DataTable dtHelp = objHelp.SearchSupplier("where page = 'export_order'", 18); if (dtHelp != null && dtHelp.Rows.Count > 0) lblhelp_msg.Text = dtHelp.Rows[0][0].ToString().Replace("''", "'"); } StreamWriter sw; DataSet ds = new DataSet(); export_bal objGet = new export_bal(); ds = objGet.getDetails(5); try { for (int i = 0; i < ds.Tables.Count; i++) { sw = new StreamWriter(HttpContext.Current.Server.MapPath("~/download/Orders.csv"), false, Encoding.Unicode); int iColCount = ds.Tables[i].Columns.Count; for (int h = 0; h < iColCount; h++) { sw.Write(ds.Tables[i].Columns[h]); if (h < iColCount - 1) { sw.Write("\t"); } } sw.Write(sw.NewLine); foreach (DataRow dr in ds.Tables[i].Rows) { for (int h = 0; h < iColCount; h++) { if (!Convert.IsDBNull(dr[h])) { if (dr[h].ToString().Contains("\r\n")) { string newdata = dr[h].ToString(); string newcolumn = newdata.Replace("\r\n", ""); sw.Write(newcolumn); } else { sw.Write(dr[h].ToString()); } } if (h < iColCount - 1) { sw.Write("\t"); } } sw.Write(sw.NewLine); } sw.Close(); } } catch (Exception ex) { Console.WriteLine(ex.ToString()); } finally { } } } <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> </head> <table style="height: auto; width: 99.3%;" cellspacing="0" cellpadding="0" border="0" align="left" bgcolor="white"> <tr> <td valign="top" bgcolor="#ffffff" align="left" width="8"> <img height="8" width="8" alt="left bottom" src="../admin/images/top-left-corner.gif" /> </td> <td bgcolor="#ffffff" width="99%"> </td> <td bgcolor="#ffffff" align="right" width="8"> <img height="8" width="8" align="right" alt="bottom right" src="../admin/images/right-top-corner.gif" /> </td> </tr> <tr> <td colspan="3" valign="top"> <table bgcolor="#ffffff" width="100%"> <tr> <td width="36px" style="padding-left: 18px;"> <img src="images/category-img.gif" width="36" height="36" /> </td> <td class="font_text_bold"> Export Orders </td> </tr> </table> </td> </tr> <tr> <td colspan="3" valign="top"> <table bgcolor="#ffffff" width="100%" style="height: 660px;"> <tr> <td valign="top"> <table width="100%"> <tr> <td colspan="3" valign="top"> <table bgcolor="#ffffff" width="100%" style="padding-left: 7px;"> <tr> <td> <table width="99%" cellspacing="0" cellpadding="0" border="0" align="left" style="height: auto;"> <tr class="box_hd_bg_for_every"> <td align="left" valign="top" width="7"> <img src="images/left-add-pro.gif" alt="left" height="29" /> </td> <td class="font_text_bold" width="100%" align="center" style="padding-right: 200px; width: 1500px"> Export Setup </td> <td align="right"> <img src="images/right-add-pro.gif" alt="right" height="29" /> </td> </tr> <tr> <td class="Gray_blowtr" colspan="3"> <table width="100%" height="100%" border="0" cellpadding="1" cellspacing="0"> <tr> <td colspan="2" height="10"> </td> </tr> <tr> <td colspan="2" align="left" class="font_text" style="padding-left: 5px;"> Export file will be readable in Microsoft Excel or equivalent applications for ease review of data. Please click on below download button to Export file for Orders. </td> </tr> <tr> <td style="height: 20px;"> </td> </tr> <tr> <td colspan="2" align="center" style="height: 30px;"> <a href="../../download/Orders.csv" class="setpostion"> <img style="border: 0" src="images/download.gif" alt="Download" title="Export" /> </a> </td> </tr> <tr> <td style="height: 20px;"> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </td> </tr> <tr> <td colspan="3" valign="top"> <table bgcolor="#ffffff" width="100%" style="padding-left: 7px;"> <tr> <td> <table width="99%" cellspacing="0" cellpadding="0" border="0" align="left" style="height: auto;"> <tr class="box_hd_bg_for_every"> <td align="left" valign="top" width="7"> <img src="images/left-add-pro.gif" alt="left" height="29" /> </td> <td class="font_text_bold" width="100%" style="padding-right: 200px"> How to use this page </td> <td align="right"> <img src="images/right-add-pro.gif" alt="right" height="29" /> </td> </tr> <tr> <td class="Gray_blowtr" colspan="3" style="padding-left: 10px; padding-right: 10px; padding-top: 7px; padding-bottom: 7px;"> <asp:Label ID="lblhelp_msg" runat="server" Text=""></asp:Label> </td> </tr> <tr style="height: 20px;"> <td> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </td> </tr> <tr> <td valign="bottom" bgcolor="#ffffff" align="left" width="8"> <img height="8" width="8" alt="left bottom" src="images/bottom-left-corner.gif" /> </td> <td bgcolor="#ffffff" width="99%"> </td> <td bgcolor="#ffffff" align="right" width="8"> <img height="8" width="8" align="right" alt="bottom right" src="images/bottom-right-corner.gif" /> </td> </tr> </table> </html>
我find了解决办法，请移动Response.End（）; 行到onclick事件并调用ExportToExcel（DataTable dtExportData）方法。
和Response.End（）; 不应该在try … catch语句里面，应该在外面try … catch语句