导出excel问题

Question

导出excel，数据全是代码。 我检查过了，里面的代码跟源文件（页面右击-->查看源文件）的代码一模一样。
请问有谁知道这个问题怎么解决?

Answer 1

protected void Button1_Click(object sender, EventArgs e)
    {
        if (this.GridView3.Rows.Count == 0)
        {
            Response.Write("<script>alert('没有查找到数据,无法导出！')</script>");
        }
        else
        {
            //this.GridView3.AllowPaging = false; // 将有分页的GridView中的数据全部导出到Excel
            //GridView3Bind();
            export("application/ms-excel", "工作人员.xls");
            // 换成 export("application/ms-word", "工作人员.doc"); 那么导出的就是Word格式的了.
            //this.GridView3.AllowPaging = true;
            //GridView3Bind();
        }
    }
    public void export(string FileType, string FileName)
    {
        string style = "<style>td{mso-number-format:\"\\@\";}</style>";//导入到excel时,保存表里数字列中前面存在的 0 .
        for (int i = 0; i < GridView3.Columns.Count; i++)
        {
            if (GridView3.Columns[i].GetType() == typeof(CommandField))
                GridView3.Columns[i].Visible = false;
        }
        PrepareGridViewForExport(GridView3);
        Response.Clear();
        Response.Charset = "GB2312";
        Response.ContentEncoding = Encoding.UTF7;
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
        Response.ContentType = FileType;
        this.EnableViewState = false;
        this.GridView3.AllowPaging = false;
        System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        this.GridView3.RenderControl(htw);
        Response.Write(style);
        Response.Write(sw.ToString());
        Response.End();
    }
    public override void VerifyRenderingInServerForm(Control control)
    {
        //在后台中重载VerifyRenderingInServerForm()方法，否则报错为“类型"GridView"的控件"GridView1"必须放在具有 runat=server 的窗体标记内“
    }
    private void PrepareGridViewForExport(Control gv)//模式化特殊元素 flashcong
    {
        Literal l = new Literal();
        for (int i = 0; i < gv.Controls.Count; i++)
        {
            if (gv.Controls[i].GetType() == typeof(HyperLink))
            {
                l.Text = (gv.Controls[i] as HyperLink).Text;
                gv.Controls.Remove(gv.Controls[i]);
                gv.Controls.AddAt(i, l);
            }
            if (gv.Controls[i].GetType() == typeof(LinkButton))
            {
                l.Text = (gv.Controls[i] as LinkButton).Text;
                gv.Controls.Remove(gv.Controls[i]);
                gv.Controls.AddAt(i, l);
            }
            else if (gv.Controls[i].GetType() == typeof(DropDownList))
            {
                l.Text = (gv.Controls[i] as DropDownList).SelectedItem.Text;
                gv.Controls.Remove(gv.Controls[i]);
                gv.Controls.AddAt(i, l);
            }
            else if (gv.Controls[i].GetType() == typeof(CheckBox))
            {
                l.Text = (gv.Controls[i] as CheckBox).Checked ? "True" : "False";
                gv.Controls.Remove(gv.Controls[i]);
                gv.Controls.AddAt(i, l);
            }
            if (gv.Controls[i].HasControls())
            {
                PrepareGridViewForExport(gv.Controls[i]);
            }
        }
    }
这方法能用 我昨天还用的 

Answer 2

http://topic.csdn.net/u/20080728/10/DD7D9AF8-0751-474B-A34C-147D71E28777.html
参考