前台代码：
protected void Button7_Click(object sender, EventArgs e)
{
DataTable dt = DataExport.GetDefenseStu();//dt是从后台生成的要导出的datatable
string fileName = "二辩名单" + ".xls";//设置导出文件的名称
HttpContext curContext = System.Web.HttpContext.Current;
curContext.Response.ContentType = "application/vnd.ms-excel.numberformat:@";
curContext.Response.ContentEncoding = System.Text.Encoding.Default;
curContext.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName, Encoding.UTF8).ToString());
curContext.Response.Charset = "";
curContext.Response.Write(AddExcelHead());//显示excel的网格线
curContext.Response.Write(ExportTable(dt));//导出
curContext.Response.Write(AddExcelbottom());//显示excel的网格线
curContext.Response.Flush();
curContext.Response.End();
}
#region 公共程序（导出excel）
public static string ExportTable(DataTable tb)
{
string data = "";
data += "<table cellspacing=\"0\" cellpadding=\"5\" rules=\"all\" border=\"0\">";
//写出列名
data += "<tr style=\"font-weight: bold; white-space: nowrap;\">";
foreach (DataColumn column in tb.Columns)
{
data += "<td>" + column.ColumnName + "</td>";
}
data += "</tr>";
//写出数据
foreach (DataRow row in tb.Rows)
{
data += "<tr>";
foreach (DataColumn column in tb.Columns)
{
if (column.ColumnName.Equals("学生学号"))
data += "<td style=\"vnd.ms-excel.numberformat:@\">" + row[column].ToString() + "</td>";
else
data += "<td>" + row[column].ToString() + "</td>";
}
data += "</tr>";
}
data += "</table>";
return data;
}
public static string AddExcelHead()
{
StringBuilder sb = new StringBuilder();
sb.Append("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
sb.Append(" <head>");
sb.Append(" <!--[if gte mso 9]><xml>");
sb.Append("<x:ExcelWorkbook>");
sb.Append("<x:ExcelWorksheets>");
sb.Append("<x:ExcelWorksheet>");
sb.Append("<x:Name></x:Name>");
sb.Append("<x:WorksheetOptions>");
sb.Append("<x:Print>");
sb.Append("<x:ValidPrinterInfo />");
sb.Append(" </x:Print>");
sb.Append("</x:WorksheetOptions>");
sb.Append("</x:ExcelWorksheet>");
sb.Append("</x:ExcelWorksheets>");
sb.Append("</x:ExcelWorkbook>");
sb.Append("</xml>");
sb.Append("<![endif]-->");
sb.Append(" </head>");
sb.Append("<body>");
return sb.ToString();
}
public static string AddExcelbottom()
{
StringBuilder sb = new StringBuilder();
sb.Append("</body>");
sb.Append("</html>");
return sb.ToString();
}
#endregion