gridview to pdf

This error comes when Gridview is not binded with data. Before exporting rebind gridview with data

but the data is appearing in the gridview what do i need to change in the code.

ps: code posted again because it appears strange on frist post.

bool gerarpdf;      protectedvoid btn_pdf_Click(object sender,ImageClickEventArgs e)       {           gerarpdf =true;       }        publicoverridevoidVerifyRenderingInServerForm(Control control)       {          /* Verifies that the control is rendered */               /* Necessario para gerar pdf com gridview */          }        protectedoverridevoidRender(HtmlTextWriter writer)      {          if(gerarpdf ==true)          {              //pdf generation code called here                    int columns =GridView2.Columns.Count;              // Table and PdfTable classes removed in version 5.XXX                       iTextSharp.text.pdf.PdfPTable table =new iTextSharp.text.pdf.PdfPTable(columns);              // padding can only be set for cells, __NOT__ PdfPTable object                  int padding =5;float[] widths =newfloat[columns];for(int x =0; x < columns; x++)              {                  widths[x]=(float)GridView2.Columns[x].ItemStyle.Width.Value;string cellText =Server.HtmlDecode(GridView2.HeaderRow.Cells[x].Text);                  // Cell and Color classes are gone too                                      iTextSharp.text.pdf.PdfPCell cell =new iTextSharp.text.pdf.PdfPCell(new iTextSharp.text.Phrase(cellText)){BackgroundColor=new iTextSharp.text.BaseColor(System.Drawing.ColorTranslator.FromHtml("#008000")),Padding= padding }; table.AddCell(cell);              }              // next two lines set the table's __ABSOLUTE__ width                  table.SetTotalWidth(widths); table.LockedWidth=true;for(int i =0; i < columns; i++){if(GridView2.Rows[i].RowType==DataControlRowType.DataRow){for(int j =0; j < columns; j++){string cellText =Server.HtmlDecode(GridView2.Rows[i].Cells[j].Text); iTextSharp.text.pdf.PdfPCell cell =new iTextSharp.text.pdf.PdfPCell(new iTextSharp.text.Phrase(cellText)){Padding= padding };if(i %2!=0){ cell.BackgroundColor=new iTextSharp.text.BaseColor(System.Drawing.ColorTranslator.FromHtml("#C2D69B"));} table.AddCell(cell);}}}Response.ContentType="application/pdf"; iTextSharp.text.Document pdfDoc =new iTextSharp.text.Document(iTextSharp.text.PageSize.A4,10f,10f,10f,0f); iTextSharp.text.pdf.PdfWriter.GetInstance(pdfDoc,Response.OutputStream); pdfDoc.Open(); pdfDoc.Add(table); pdfDoc.Close();Response.End();          }          else          {              //let page render normally                  base.Render(writer);          }      }

by the way how can i add pagging option with radio buttons like here: http://archive.aspsnippets.com/demos/GridView2PDF.aspx

You are exporting on Render Event. Export it in Button click event of some button

And before exporting bind gridview with data

In the   

if(gerarpdf ==true) { 

bind the GridView

so i have changed the code to this:

    protected void btn_pdf_Click(object sender, ImageClickEventArgs e)    {
        gerarpdf = true;    }
    public override void VerifyRenderingInServerForm(Control control)    {
        /* Verifies that the control is rendered */
        /* Necessario para gerar pdf com gridview */    }
    protected override void Render(HtmlTextWriter writer)    {
        if (gerarpdf == true)        {            GridView2.DataBind(); 
            //pdf generation code called here  

and it gives a error like Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.