getting blank page issue in pdf using ap webgrabber ?

[divs99]

iam getting blank page in pdf using apwebgrabber ..i want to avoid tht blank page in pdf......see my sample code on ap webgrabber..i think due to this setmargins in webgrabber code it is getting problem with blank page in pdf ... oWG.SetMargins(topMargin, bottomMarigin, leftMargin, rightMargin);

APWebGrbNET.APWebGrabber oWG = new APWebGrbNET.APWebGrabber();
                  try
                {
                    string strHTMLToPDF = this.OutputFolder + "[URL="file://\\htmltopdf"]\\htmltopdf[/URL]";
                         if (Directory.Exists(strHTMLToPDF) == true)
                     directory.DeleteFiles(strHTMLToPDF);
                    else
                        Directory.CreateDirectory(strHTMLToPDF);
                    //Specifies the directory in which WebGrabber will place the output PDF.
                    oWG.OutputDirectory = strHTMLToPDF;
                    //Sets the filename for the output PDF. By default, WebGrabber uses an auto-generated unique identifier
                    oWG.NewDocumentName = "output.pdf";
                    //The Uniform Resource Locator (URL) to convert to PDF.
                    oWG.URL = sURL;
                    //Embeds all fonts used in the input file.
                    oWG.EmbedAllFonts = true;
                    oWG.ColorMode = 2;
                    //The size of the top, bottom, left, and right margins for the output, measured in inches.                    
                    oWG.SetMargins(topMargin, bottomMarigin, leftMargin, rightMargin);
                    // Set timeout properties.                   
                                    
                    // A true value instructing WebGrabber to use a temporary file.Sends the raw data passed with 
                    //CreateFromHTMLText to a temporary file during rendering, which can improve performance on large documents.
                    oWG.HTMLTextToFile = true;
                    oWG.CreateFromHTMLText = strHTML;
                    oWG.Timeout = conTimeout;
                    //Submits the job parameters and input data to WebGrabber for PDF generation.
                    int iTest = oWG.DoPrint(sIP, 64320);
                    //Generate the pdf and catch the error if any error occurs.
                    if (iTest == 0)
                    {
                        DirectoryInfo di = new DirectoryInfo(strHTMLToPDF);
                        FileInfo[] rgFiles = di.GetFiles("*.pdf");
                        foreach (FileInfo fi in rgFiles)
                        {
                            FileStream fs = new FileStream(fi.FullName, FileMode.Open, FileAccess.Read, FileShare.Read);
                            PDFStream = new byte[fs.Length];
                            fs.Read(PDFStream, 0, (int)fs.Length);
                            fs.Close();
                            File.Delete(fi.FullName);
                            break;
                        }
                        //Directory.Delete(strHTMLToPDF);
                    }
                    else
                    {
                            throw new Exception("HTML to PDF conversion failed '" + logmsg.ToString() + "'.");
                    }
                }
                finally
                {
                      oWG.CleanUp(sIP, 64320);
                }
            }
            return PDFStream;