How can I call PDFStampCom from C# code?

Thanks for the SDK link, however the example files are not working. Please see the attached document.

image

When I call PDFStamp SDK from C# code, I'm get following error message,

Argument Null Exception was unhandled.

The following is the source code for PDFStamp SDK product,

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using PDFStampCom;

using System.IO;

 

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

 

        int Very_Set_Range = 131;

        int Very_Set_Opacity = 240;

        int Very_Get_Opacity = 240;

        int Very_Get_PdfPageCount = 206;

        int Very_Get_PageBoxForStamp = 260;

        int Very_Set_EmbedFont = 241;

        int Very_Get_EmbedFont = 241;

        int Very_Set_TransparentColor = 242;

 

        private void PDFStamp_Click(object sender, EventArgs e)

        {

            string strPDFFile;

            string strOutFile;

            int id;

            string appPath = Path.GetDirectoryName(Application.ExecutablePath);

 

            strPDFFile = appPath + "\\example.pdf";

            strOutFile = appPath + "\\C#-com-test.pdf";

            System.Type pdfstampType = System.Type.GetTypeFromProgID
               (
"PDFStampCom.CPDFStamp");

            PDFStampCom.CPDFStamp pdfstamp = (PDFStampCom.CPDFStamp)
               System.
Activator.CreateInstance(pdfstampType);

            //id = pdfstamp.veryOpenEx(strPDFFile, strOutFile);

            id = pdfstamp.VeryStampLayerOpenEx(strPDFFile, strOutFile,
               "PDFManWatermark_Overlayer"
, "PDFManWatermark_Underlayer");

            if (id > 0)

            {

                int pagecount = pdfstamp.veryGetFunctionEx(id, Very_Get_PdfPageCount,
                    0, 0,
null, null);

                for (int Page = 1; Page <= pagecount; Page++)

                {

                    string strStampBuf;

                    long left, top, pagewidth, pageheight;

 

                    left = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                           Page, 0,
"left", null);

                    top = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                           Page, 0,
"top", null);

                    pagewidth = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                           Page, 0,
"width", null);

                    pageheight = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                           Page, 0,
"height", null);

 

                    //We need to control which pages the stamp goes on

                    int iRet = pdfstamp.verySetFunctionEx(id, Very_Set_Range, Page,
                           1,
null, null);

                    strStampBuf = "Page:" + (pagecount - Page + 1).ToString() +
                          
", Page Box: [" + left.ToString() + " " + top.ToString() + " "
                           + pagewidth.ToString() +
" " + pageheight.ToString() + "]";

 

                    //*'*/Not embed TTF font for general text stamp

                    iRet = pdfstamp.verySetFunctionEx(id, Very_Set_EmbedFont, 0, 0,
                           null, null);

                    iRet = pdfstamp.veryAddTextEx(id, 2, strStampBuf, 255, 0, 0, 0, 0,
                           0, 0, 300,
null, 10, 1, "http://www.verypdf.com", 0);

 

                    //*'*/Embed special TTF font into PDF file, we can to use any TTF font

                    iRet = pdfstamp.verySetFunctionEx(id, Very_Set_EmbedFont, 1, 0,
                           null, null);

                    iRet = pdfstamp.veryAddTextEx(id, 1, "0123456789", 0, 0, 0, 0, 0,
                           0, 0, 0,
"Code-39-20", 8, 1, "http://www.verypdf.com/", 0);

                }

                pdfstamp.veryCloseEx(id);

                pdfstamp.VeryStampEncryptPDFEx(strOutFile, strOutFile + "-encrypted.pdf",
                          
null, "123", 2, 3900);

            }

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

            string strPDFFile;

            string strOutFile;

            int id;

            string appPath = Path.GetDirectoryName(Application.ExecutablePath);

 

            strPDFFile = appPath + "\\example.pdf";

            strOutFile = appPath + "\\C#-com-barcode.pdf";

            System.Type pdfstampType = System.Type.GetTypeFromProgID
                (
"PDFStampCom.CPDFStamp");

            PDFStampCom.CPDFStamp pdfstamp = (PDFStampCom.CPDFStamp)
                System.
Activator.CreateInstance(pdfstampType);

            id = pdfstamp.veryOpenEx(strPDFFile, strOutFile);

            if (id > 0)

            {

                int pagecount = pdfstamp.veryGetFunctionEx(id, Very_Get_PdfPageCount, 0,
                    0,
null, null);

                for (int Page = 1; Page <= pagecount; Page++)

                {

                    string strStampBuf;

                    long left, top, pagewidth, pageheight;

 

                    left = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                          Page, 0,
"left", null);

                    top = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp, Page,
                          0,
"top", null);

                    pagewidth = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                          Page, 0,
"width", null);

                    pageheight = pdfstamp.veryGetFunctionEx(id, Very_Get_PageBoxForStamp,
                          Page, 0,
"height", null);

 

                    //We need to control which pages the stamp goes on

                    int iRet = pdfstamp.verySetFunctionEx(id, Very_Set_Range, Page,
                          1,
null, null);

                    strStampBuf = "Page:" + (pagecount - Page + 1).ToString() +
                         
", Page Box: [" + left.ToString() + " " + top.ToString() + " "
                          + pagewidth.ToString() +
" " + pageheight.ToString() + "]";

 

                    //*'*/Not embed TTF font for general text stamp

                    iRet = pdfstamp.verySetFunctionEx(id, Very_Set_EmbedFont, 0, 0,
                         
null, null);

                    iRet = pdfstamp.veryAddTextEx(id, 2, strStampBuf, 255, 0, 0, 0, 0,
                          0, 0, 300,
null, 10, 1, "http://www.verypdf.com", 0);

 

                    //*'*/Embed special TTF font into PDF file, we can to use any TTF font

                    iRet = pdfstamp.verySetFunctionEx(id, Very_Set_EmbedFont, 1, 0,
                         
null, null);

                    string strFontName = "Free 3 of 9";

                    iRet = pdfstamp.veryAddTextEx(id, 1, "0123456789", 0, 0, 0, 0, 0,
                          0, 0, 0, strFontName, 8, 1,
"http://www.verypdf.com/", 0);

                }

                pdfstamp.veryCloseEx(id);

            }

        }

    }

}

 

 

Customer
-------------------------------------
Have you already registered the "PDFStampCom.exe" COM component? if not, you can run "bin/install_for_x64.bat" to register PDFStampCom.exe first, you need run it with administrator right, you can also run following command line to register it by manual,

PDFStampCom.exe /regserver

image

after you registered the "PDFStampCom.exe" COM component into your system, you can call it from your C# code without any restrictions.

Please refer to following web pages for more information,

http://www.verypdf.com/wordpress/201106/pdf-stamp-com-sdk-3-2-doesnt-work-on-win2k8-64bit-287.html

http://www.verypdf.com/wordpress/201107/use-pdfstamp-dll-on-windows-2008-64-bit-system-1553.html

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