protected void ToExcel()
{ //新建一个Gridview，原因：避免当前窗口GridView外层没有直接跟form标签，从而避免“gridview1未包含在run='server'”的错误。
GridView gvOrders = new GridView();
System.IO.StringWriter sw = new System.IO.StringWriter();
//定义页面输出格式。
Response.Write("<meta http-equiv=Content-Type content=\"ms-excel; charset=utf-8\">");
//定义文件名称
string fileName = System.Web.HttpUtility.UrlEncode(DateTime.Now.ToString("_yyyyMMddHHmmss"), Encoding.UTF8);
//取得数据源
DataTable dt = (DataTable)Session["dt"];//在repeater数据绑定的时候，预先将dt赋值给Session
//设置Excel网格（注意XML内容，定义Sheet工作簿名称和网格线）
if (dt != null)
{ sw.WriteLine("<html xmlns:x=\"urn:schemas-microsoft-com:office:excel\">");
sw.WriteLine("<head>");
sw.WriteLine("<!--[if gte mso 9]>");
sw.WriteLine("<xml>");
sw.WriteLine(" <x:ExcelWorkbook>");
sw.WriteLine(" <x:ExcelWorksheets>");
sw.WriteLine(" <x:ExcelWorksheet>");
sw.WriteLine(" <x:Name>" + fileName + "</x:Name>");
sw.WriteLine(" <x:WorksheetOptions>");
sw.WriteLine(" <x:Print>");
sw.WriteLine(" <x:ValidPrinterInfo />");
sw.WriteLine(" </x:Print>");
sw.WriteLine(" </x:WorksheetOptions>");
sw.WriteLine(" </x:ExcelWorksheet>");
sw.WriteLine(" </x:ExcelWorksheets>");
sw.WriteLine("</x:ExcelWorkbook>");
sw.WriteLine("</xml>");
sw.WriteLine("<![endif]-->");
sw.WriteLine("</head>");
sw.WriteLine("<body>");
sw.WriteLine("<table style=font-size:15px>");
sw.WriteLine(" <tr style=font-size:17px;font-weight:bold;font-family:Arial>");
//根据数据库表 生成列标题，注意这里根据需要的列名设置标题和获取数据
for (int i = ; i < dt.Columns.Count; i++)
{
if (i == )sw.WriteLine(" <td>标题</td>");
if (i == ) sw.WriteLine(" <td>发布人</td>");
if (i == ) sw.WriteLine(" <td>添加时间</td>");
if (i == ) sw.WriteLine(" <td>最新状态</td>");
}
sw.WriteLine(" </tr>");
//根据数据库表 生成列数据
for (int i = ; i < dt.Rows.Count; i++)
{ sw.WriteLine(" <tr>"); for (int j = ; j < dt.Columns.Count; j++)
{
if (j == || j == || j == || j == ) //根据数据库表 根据需要的列获取数据
{
if (j == )
{
if (dt.Rows[i][j].ToString().Trim() == "") sw.WriteLine(" <td>未签收</td>");
else sw.WriteLine(" <td style=color:red>已签收：" + dt.Rows[i][j] + "</td>"); }
else sw.WriteLine(" <td>" + dt.Rows[i][j] + "</td>");
}
} sw.WriteLine(" </tr>"); }
sw.WriteLine("</table>");
sw.WriteLine("</body>");
sw.WriteLine("</html>"); Response.Clear();
//应用缓存
Response.Buffer = true; Response.Charset = "utf-8";
//设置 文件的名称
Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");
//设置 内容格式。
Response.ContentType = "application/ms-excel";
//设置 输出编码
Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
this.EnableViewState = false; System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(sw);
//不允许翻页
gvOrders.AllowPaging = false;
//不允许排序
gvOrders.AllowSorting = false;
//绑定数据源
gvOrders.DataSource = dt;
gvOrders.DataBind();
//写入HtmlTextWriter
gvOrders.RenderControl(hw);
//Response.Write(sw.ToString());//换成下面这句可以解决乱码
Response.Write("<meta http-equiv=\"content-type\" content=\"application/vnd.ms-excel; charset=utf-8\"/>" + sw.ToString());
Response.End();
}
}
最终效果
