导出数据表到Excel的asp
我有一个网页，导出数据到Excel文件。 我遇到的唯一问题是，当我尝试打开excel文件时，我收到一条消息，说：“您试图打开的文件格式与文件扩展名指定的格式不同。确认文件没有损坏，并且来自信任的来源，然后再打开文件。“ 我怎么能摆脱这个消息。 要进行导出，我正在使用另一篇文章中find的函数。 这里是代码…
private void ExporttoExcel(DataTable table) { //Response.Clear(); HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.Buffer = true; HttpContext.Current.Response.ContentType = "application/excel"; HttpContext.Current.Response.Write(@"<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 4.0 Transitional//EN"">"); HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=TestingReports"); HttpContext.Current.Response.Charset = "UTF-8"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("windows-1252"); // Sets font HttpContext.Current.Response.Write("<font style='font-size:10.0pt; font-family:Calibri;'>"); HttpContext.Current.Response.Write("<BR><BR><BR>"); // Sets the table border, cell spacing, border color, font of the text, background, foreground, font height HttpContext.Current.Response.Write("<Table bgColor='#ffffff' cellSpacing='0' cellPadding='0' style='font-size:10.0pt; font-family:Calibri; background:white;'> <TR>"); // Am getting my grid's column headers int columnscount = table.Columns.Count; // Write in new column for (int j = 0; j < columnscount; j++) { HttpContext.Current.Response.Write("<Td style='font-size:15.0pt; text-align:center; width:80.0pt; border-width:1.0pt; border-color:#000000; border-style:solid; height:22.0pt;'>"); // Get column headers and make it as bold in excel columns HttpContext.Current.Response.Write("<B>"); HttpContext.Current.Response.Write(table.Columns[j].ToString()); HttpContext.Current.Response.Write("</B>"); HttpContext.Current.Response.Write("</Td>"); } HttpContext.Current.Response.Write("</TR>"); // Write in new row foreach (DataRow row in table.Rows) { HttpContext.Current.Response.Write("<TR>"); for (int i = 0; i < table.Columns.Count; i++) { HttpContext.Current.Response.Write("<Td style='width:80.0pt; text-align:center; border-width:0.5pt; border-color:#000000; border-style:solid; height:22.0pt;'>"); HttpContext.Current.Response.Write(row[i].ToString()); HttpContext.Current.Response.Write("</Td>"); } HttpContext.Current.Response.Write("</TR>"); } HttpContext.Current.Response.Write("</Table>"); HttpContext.Current.Response.Write("</font>"); HttpContext.Current.Response.Flush(); HttpContext.Current.Response.End(); //Response.Write("TestingReports.xls"); //Response.Flush(); //Response.End(); } 任何帮助都感激不尽。 先谢谢你。
在Excel 2007中使用“application / x-msexcel”或“application / vnd.ms-excel”MIMEtypes打开网页内容的网站可能会遇到以下警告提示：
“试图打开的文件'[filename]'与文件扩展名指定的文件格式不同。在打开文件之前，确认文件没有被损坏，并且来自可信来源。现在的文件？“ （是|否|帮助）
如果用户单击是，文件将按预期方式打开。 如果用户单击否，文件可能会打开，或者可能会再次提示，如果用户再次select否，则不打开。
下面的方法用于从你的c＃代码中导出excel。
// fileName = your file name like test.xls // dt = your data table // caption = it is caption which display on top of excel file. public static void Export(string fileName, DataTable dt, string Caption) { HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("windows-1254"); HttpContext.Current.Response.Charset = "windows-1254"; //ISO-8859-13 ISO-8859-9 windows-1254 HttpContext.Current.Response.AddHeader( "content-disposition", string.Format("attachment; filename={0}", fileName)); HttpContext.Current.Response.ContentType = "application/ms-excel"; string header = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<title></title>\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=windows-1254\" />\n<style>\n</style>\n</head>\n<body>\n"; using (StringWriter sw = new StringWriter()) { using (HtmlTextWriter htw = new HtmlTextWriter(sw)) { // Create a form to contain the grid Table table = new Table(); table.GridLines = GridLines.Horizontal; //table.CellSpacing = 17; if (Caption.Trim() != "") table.Caption = "<span style='background-color: #FFFFFF; color: #666666; font-size: 14pt; font-weight: bold; padding: 5px 0px; height: 30px;'>" + Caption + "</span>"; TableRow row = null; row = new TableRow(); for (int i = 0; i < dt.Columns.Count; i++) { TableHeaderCell headerCell = new TableHeaderCell(); headerCell.Text = dt.Columns[i].ColumnName; PrepareControlForExport(headerCell); row.Cells.Add(headerCell); } table.Rows.Add(row); foreach (DataRow rows in dt.Rows) { row = new TableRow(); for (int i = 0; i < dt.Columns.Count; i++) { TableCell RowCell = new TableCell(); RowCell.Text = rows[i].ToString(); PrepareControlForExport(RowCell); row.Cells.Add(RowCell); } table.Rows.Add(row); } // render the table into the htmlwriter table.RenderControl(htw); // render the htmlwriter into the response HttpContext.Current.Response.ContentType = "text/csv"; HttpContext.Current.Response.Write(header + sw.ToString()); HttpContext.Current.Response.End(); } } } private static void PrepareControlForExport(Control control) { for (int i = 0; i < control.Controls.Count; i++) { Control current = control.Controls[i]; if (current is LinkButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text)); } else if (current is ImageButton) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText)); } else if (current is HyperLink) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text)); } else if (current is DropDownList) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text)); } else if (current is CheckBox) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False")); } else if (current is Label) { control.Controls.Remove(current); control.Controls.AddAt(i, new LiteralControl((current as Label).Text)); } if (current.HasControls()) { ReportExport.PrepareControlForExport(current); } } }
将您的内容types更改为application/ms-excel并在文件名中包含扩展名。 即
Response.ContentType = "application/ms-excel"; Response.AppendHeader("Content-Disposition", "attachment;filename=MyFileName.xls");
我已经用三种不同的方式写了一篇文章 。 您可以使用这些方法之一。
HTML表格方式：
public void ExportToExcel(DataTable table) { HttpContext context = HttpContext.Current; context.Response.Clear(); //Begin Table context.Response.Write("<table><tr>"); //Write Header foreach (DataColumn column in table.Columns) { context.Response.Write("<th>" + column.ColumnName + "</th>"); } context.Response.Write("</tr>"); //Write Data foreach (DataRow row in table.Rows) { context.Response.Write("<tr>"); for (int i = 0; i < table.Columns.Count; i++) { context.Response.Write("<td>" + row[i].ToString().Replace(",", string.Empty) + "</td>"); } context.Response.Write("</tr>"); } //End Table context.Response.Write("</table>"); context.Response.ContentType = "application/ms-excel"; context.Response.AppendHeader("Content-Disposition", "attachment;filename=MyFileName.xls"); context.Response.End(); }
尽pipe你所做的事情可能会起作用，但是在大型文件中读取也需要很长时间。 检查这个excel读者。 既然你有数据集，你所要做的就是循环创build一个文件stream，你将拥有你的Excel文档