将GridView写入.pdf文件

Question

我正在尝试将GridView，gv写入.pdf文件。

pdfDoc出现问题。

    Response.ContentType = "application/pdf"
    Response.AddHeader("content-disposition", "attachment;filename=Export.pdf")
    Response.Cache.SetCacheability(HttpCacheability.NoCache)
    Dim sw As New StringWriter()
    Dim hw As New HtmlTextWriter(sw)
    Dim frm As New HtmlForm()
    gv.Parent.Controls.Add(frm)
    frm.Attributes("runat") = "server"
    frm.Controls.Add(gv)
    frm.RenderControl(hw)
    Dim sr As New StringReader(sw.ToString())
    Dim pdfDoc As New Document(PageSize.A4, 10.0F, 10.0F, 10.0F, 0.0F)
    Dim htmlparser As New HTMLWorker(pdfDoc)
    PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
    pdfDoc.Open()
    htmlparser.Parse(sr)
    pdfDoc.Close()
    Response.Write(pdfDoc)
    Response.[End]()

Answer 1

为什么不循环遍历Gridview行或数据源项并创建html字符串？