将GridView数据导出到Excel实现

时间：2011-01-05 来源：丫头小静

首先将数据用GridView控件显示到页面上，效果如下：

接下来将GridView中的内容导出到Excel，方法如下：

/// <summary>
    /// 由GridView导出Excel
    /// </summary>
    /// <param name="ctl">GridView控件ID</param>
    /// <param name="FileName">导出Excel名称</param>
    private void ToExcel(Control ctl, string FileName)
    {
        HttpContext.Current.Response.Charset = "UTF-8";
        HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
        HttpContext.Current.Response.ContentType = "application/ms-excel";
        HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName);
        ctl.Page.EnableViewState = false;
        System.IO.StringWriter tw = new System.IO.StringWriter();
        HtmlTextWriter hw = new HtmlTextWriter(tw);
        ctl.RenderControl(hw);
        HttpContext.Current.Response.Write(tw.ToString());
        HttpContext.Current.Response.End();
    }

在按钮上添加事件来导出Excel。注意，因为GridView是有分页和排序设置的，为了能够显示完整的数据，要先取消分页排序，导出之后再恢复设置。代码如下：

  protected void btnExport_Click(object sender, EventArgs e)
    {
        gvWord.AllowPaging = false;
        gvWord.AllowSorting = false;
        Display();
        ToExcel(gvWord, "word.xls");
        gvWord.AllowSorting = true;
        gvWord.AllowPaging = true;
        Display();
    }

可是运行之后报错：

类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内。

添加重写方法：

public override void VerifyRenderingInServerForm(Control control)
    {
        //base.VerifyRenderingInServerForm(control);
    }

完成后效果如下：