0

Hai ,
I have gris fro student listing. And I need to export this list to pdf.
But i get the error msg like:

Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near '%PDF-1.4
%??3 0 obj '.


The code i used is:

protected void lnkStudentPDF_Click(object sender, EventArgs e)
    {
        SchoolCommon ObjCommon = new SchoolCommon();        
        try
        {
            GrdStudent.AllowPaging = false;
            DataTable dt = (ViewState["StudentList"]) as DataTable;
            GrdStudent.DataSource = dt;
            GrdStudent.DataBind();

            GrdStudent.Columns[6].Visible = false;
            GrdStudent.Columns[7].Visible = false;
            GrdStudent.Columns[8].Visible = false;
           
            ObjCommon.ExportToPDFnewFormat_WithButtons(GrdStudent, true, "Student Report",6);           
            LblErr.Text = "Successfully Exported";
        }
       catch (Exception ex)
        {
            LblErr.Text = "Export Failed";
        }
       

        finally
        {
            GrdStudent.Columns[6].Visible = true;
            GrdStudent.Columns[7].Visible = true;
            GrdStudent.Columns[8].Visible = true;
        }
    }
public void ExportToPDFnewFormat_WithButtons(GridView gvReport, bool LandScape, string strHeader, int iColoumnNo)
    {
       
            int noOfColumns = 0, noOfRows = 0;
            DataTable tbl = null;
            gvReport.AllowPaging = false;
            if (gvReport.AutoGenerateColumns)
            {
                tbl = gvReport.DataSource as DataTable; // Gets the DataSource of the GridView Control.
                noOfColumns = tbl.Columns.Count;
                noOfRows = tbl.Rows.Count;
            }
            else
            {
                // noOfColumns = gvReport.Columns.Count;
                noOfColumns = iColoumnNo;
                noOfRows = gvReport.Rows.Count;
            }

            float HeaderTextSize = 14;
            float ReportNameSize = 16;
            float ReportTextSize = 12;
            float ApplicationNameSize = 10;

            // Creates a PDF document

            Document document = null;
            if (LandScape == true)
            {
                // Sets the document to A4 size and rotates it so that the     orientation of the page is Landscape.
                document = new Document(PageSize.A4.Rotate(), 0, 0, 15, 5);
            }
            else
            {
                document = new Document(PageSize.A4, 0, 0, 15, 5);
            }

            // Creates a PdfPTable with column count of the table equal to no of columns of the gridview or gridview datasource.
            iTextSharp.text.pdf.PdfPTable mainTable = new iTextSharp.text.pdf.PdfPTable(noOfColumns);

            // Sets the first 4 rows of the table as the header rows which will be repeated in all the pages.
            mainTable.HeaderRows = 4;

            // Creates a PdfPTable with 2 columns to hold the header in the exported PDF.
            iTextSharp.text.pdf.PdfPTable headerTable = new iTextSharp.text.pdf.PdfPTable(2);

            // Creates a phrase to hold the application name at the left hand side of the header.
            Phrase phApplicationName = new Phrase("School Administration", FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));

            // Creates a PdfPCell which accepts a phrase as a parameter.
            PdfPCell clApplicationName = new PdfPCell(phApplicationName);
            // Sets the border of the cell to zero.
            clApplicationName.Border = PdfPCell.NO_BORDER;
            // Sets the Horizontal Alignment of the PdfPCell to left.
            clApplicationName.HorizontalAlignment = Element.ALIGN_LEFT;

            // Creates a phrase to show the current date at the right hand side of the header.
            Phrase phDate = new Phrase(DateTime.Now.Date.ToString("dd/MM/yyyy"), FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));

            // Creates a PdfPCell which accepts the date phrase as a parameter.
            PdfPCell clDate = new PdfPCell(phDate);
            // Sets the Horizontal Alignment of the PdfPCell to right.
            clDate.HorizontalAlignment = Element.ALIGN_RIGHT;
            // Sets the border of the cell to zero.
            clDate.Border = PdfPCell.NO_BORDER;

            // Adds the cell which holds the application name to the headerTable.
            headerTable.AddCell(clApplicationName);
            // Adds the cell which holds the date to the headerTable.
            headerTable.AddCell(clDate);
            // Sets the border of the headerTable to zero.
            headerTable.DefaultCell.Border = PdfPCell.NO_BORDER;

            // Creates a PdfPCell that accepts the headerTable as a parameter and then adds that cell to the main PdfPTable.
            PdfPCell cellHeader = new PdfPCell(headerTable);
            cellHeader.Border = PdfPCell.NO_BORDER;
            // Sets the column span of the header cell to noOfColumns.
            cellHeader.Colspan = noOfColumns;
            // Adds the above header cell to the table.
            mainTable.AddCell(cellHeader);

            // Creates a phrase which holds the file name.
            Phrase phHeader = new Phrase(strHeader, FontFactory.GetFont("Arial", ReportNameSize, iTextSharp.text.Font.BOLD));
            PdfPCell clHeader = new PdfPCell(phHeader);
            clHeader.Colspan = noOfColumns;
            clHeader.Border = PdfPCell.NO_BORDER;
            clHeader.HorizontalAlignment = Element.ALIGN_CENTER;
            mainTable.AddCell(clHeader);

            // Creates a phrase for a new line.
            Phrase phSpace = new Phrase("\n");
            PdfPCell clSpace = new PdfPCell(phSpace);
            clSpace.Border = PdfPCell.NO_BORDER;
            clSpace.Colspan = noOfColumns;
            mainTable.AddCell(clSpace);

            // Sets the gridview column names as table headers.
            for (int i = 0; i < noOfColumns; i++)
            {
                Phrase ph = null;

                if (gvReport.AutoGenerateColumns)
                {
                    ph = new Phrase(tbl.Columns[i].ColumnName, FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
                }
                else
                {
                    ph = new Phrase(gvReport.Columns[i].HeaderText, FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
                }

                mainTable.AddCell(ph);
            }

            // Reads the gridview rows and adds them to the mainTable
            for (int rowNo = 0; rowNo < noOfRows; rowNo++)
            {
                for (int columnNo = 0; columnNo < noOfColumns; columnNo++)
                {
                    if (gvReport.AutoGenerateColumns)
                    {
                        string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
                        Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
                        mainTable.AddCell(ph);
                    }
                    else
                    {

                        if (gvReport.Columns[columnNo] is TemplateField)
                        {
                            string type = gvReport.Rows[rowNo].Cells[columnNo].Controls[0].ToString();
                            Control ObjControl = new Control();

                            string s = "";

                            Label tt = new Label();
                            if (gvReport.Rows[rowNo].Cells[columnNo].Controls.Count == 1)
                            {
                                DataBoundLiteralControl lc = gvReport.Rows[rowNo].Cells[columnNo].Controls[0] as DataBoundLiteralControl;
                                s = lc.Text.Trim();
                            }

                            else
                            {
                                if (gvReport.Rows[rowNo].Cells[columnNo].Controls.Count == 3)
                                {
                                    ObjControl = gvReport.Rows[rowNo].Cells[columnNo].Controls[1];
                                    if (ObjControl.GetType().Name == "Label")
                                    {
                                        s = ((Label)ObjControl).Text;


                                    }


                                }
                            }


                            Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
                            mainTable.AddCell(ph);

                        }
                        else
                        {
                            string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
                            Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
                            mainTable.AddCell(ph);
                        }
                    }
                }

                // Tells the mainTable to complete the row even if any cell is left incomplete.
                mainTable.CompleteRow();
            }

            // Gets the instance of the document created and writes it to the output stream of the Response object.
                PdfWriter.GetInstance(document, HttpContext.Current.Response.OutputStream);
 
            // Creates a footer for the PDF document.
            HeaderFooter pdfFooter = new HeaderFooter(new Phrase(), true);
            pdfFooter.Alignment = Element.ALIGN_CENTER;
            pdfFooter.Border = iTextSharp.text.Rectangle.NO_BORDER;

            // Sets the document footer to pdfFooter.
            document.Footer = pdfFooter;
            // Opens the document.
            document.Open();
            // Adds the mainTable to the document.
            document.Add(mainTable);
            // Closes the document.
            document.Close();

            HttpContext.Current.Response.ContentType = "application/pdf";
            HttpContext.Current.Response.AddHeader("content-disposition", "attachment; filename= SampleExport.pdf");
           
            
       
       
    }

Can you Please help me to solve this problem.

regards,
sreevidya

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Discussion Span
Last Post by ssreevidya.m
0

Hai,

I got it lcorrectly ,I Added trigger before closing the </asp:UpdatePanel> tag

<Triggers>
    <asp:PostBackTrigger ControlID="lnkStudentPDF" />
    <asp:PostBackTrigger ControlID="lnkStudentExcel" />
</Triggers>

Edited by Dani: Formatting fixed

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