在GridView中还是经常会遇到导出Excel，现在把导出gridView数据代码记录下来，仅供参考 如果有更好的方法，也可以交流
一、先建一个类，其中的一个方法为ToExcel。代码如下
public static void ToExcel(Control ctl, string FileName)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.Charset = System.Text.Encoding.Default.HeaderName;
//HttpContext.Current.Response.Charset = "Unicode";
//HttpContext.Current.Response.Charset = "gb2312";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");
ctl.Page.EnableViewState = false;
System.IO.StringWriter tw = new System.IO.StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=\"text/html; charset=gb2312\">");
//HttpContext.Current.Response.Write("<html><head><meta http-equiv=Content-Type content=\"text/html; charset=gb2312\"></head>");
HttpContext.Current.Response.Write(tw.ToString());
//HttpContext.Current.Response.Write("</body></html>");
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}二、在含有Gridview中的页面中后台代码引用
2.1引用前要在前台代码头文件中把 EnableEventValidation="false" 设置一下
2.2在后台开始引用
一个是button按钮事件（ps：其中GvFloorList为GridView的ID）
protected void btnExcel_Click(object sender, EventArgs e)
{
if (this.GvFloorList.Rows.Count > 0)
{
int page = this.GvFloorList.PageIndex;
this.GvFloorList.AllowPaging = false;
this.GvFloorList.AllowSorting = false;
BindData();
Common.ToExcel(GvFloorList, "表格名");
this.GvFloorList.AllowPaging = true;
this.GvFloorList.AllowSorting = true;
BindData();
this.GvFloorList.PageIndex = page;
}
}
还有一个是要在后台代码中添加一个继承方法
#region VerifyRenderingInServerForm
/// <summary>
/// VerifyRenderingInServerForm
/// </summary>
/// <param name="control"></param>
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}
#endregion