導入excel 注意：1：格式化導入excel 裡面的數據 2：Response.Clear();據說沒有這會導致亂碼

protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "GB2312";
        Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//設置輸出流為簡體中文
        Response.ContentType = "application/ms-Excel";//