数据导出到EXCEL提供用户下载,当记录数大于5行时不会出现乱码.但只要不退出Excel,再删除除记录,当记录数小于5行时,导出也不会出现乱码.当然一旦退出Excel再导出就会出现乱码了.
可以试试
试下以下代码,加个头和尾
string a1 = "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Datos</title>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312" />
<style>
</style>
</head>
<body>
";
string a2 = "
</body>
</html>";
Response.Write(a1 + sw.ToString() + a2);
另外，UTF7在office2007无法打开。
或者web.config中
requestEncoding="utf-8"
responseEncoding="utf-8"
/// <summary>
/// export error datatable
/// </summary>
/// <param name="dtError"></param>
public void ExportErrorDataTable(DataTable dtError)
{
string fileName = DateTime.Now.ToString("yyyyMMddHHmmssff") + ".xls";//设置导出文件的名称
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(fileName, Encoding.UTF8).ToString());
curContext.Response.Charset = "UTF-8";
curContext.Response.Write(AddExcelHead());//显示excel的网格线
curContext.Response.Write(ExportTable(dtError));//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("产品名称"))
data += "<td style="vnd.ms-excel.numberformat:@">" + row[column].ToString().Replace('•', '.') + "</td>";
else
data += "<td style="vnd.ms-excel.numberformat:@">" + row[column].ToString() + "</td>";
}
data += "</tr>";
}
if (tb.Rows.Count < 8)//因为少于8行的话，会出现乱码
{
for (int i = 0; i < 8; i++)
{
data += "<tr>";
foreach (DataColumn column in tb.Columns)
{
data += "<td style="vnd.ms-excel.numberformat:@"> </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