Re: Adding content controls dynamically and binding values to it using openXML - WordprocessingML - Formats

i am using a word document template which consist of some static content controls placed in it and while generating the word document i want to add some more content controls to the same template and bind values to it.
i am using the following code to add the content controls but it is over writing the template.
    WordprocessingDocument doc = WordprocessingDocument.Create(@"c:\users\\documents\visual studio 2010\Projects\SdtBlocks\SdtBlocks\Template\myOpenXmlTest.docx", DocumentFormat.OpenXml.WordprocessingDocumentType.Document);
       
       
          
            MainDocumentPart mainDocPart = doc.AddMainDocumentPart();
            Document dc = doc.MainDocumentPart.Document;
            mainDocPart.Document = new Document();
            mainDocPart.Document.Body = new Body();


            Paragraph tPara = new Paragraph();
            Run tRun = new Run();

            Text tText = new Text() { Space = SpaceProcessingModeValues.Preserve };
            tText.Text = "This is a test document";

            tRun.Append(tText);
            tPara.Append(tRun);

            mainDocPart.Document.Body.Append(tPara);

            // Add three SdtBlocks
            for (int i = 0; i < 1; ++i)
            {

              

                //mainDocPart.Document.Body.Append(tPara);
                SdtBlock sdtBlock1 = new SdtBlock();

                SdtProperties sdtProperties1 = new SdtProperties();
                SdtAlias sdtAlias1 = new SdtAlias(); //{ Val = "ContnetControl1" };
                sdtAlias1.Val = string.Format("Content Control : {0}", i + 1);
                Tag tag1 = new Tag(); //{ Val = "ContnetControl1" };
                tag1.Val = string.Format("Content Control : {0}", i + 1);

                //SdtId sdtId1 = new SdtId() { Val = 1108931250 };

                SdtId sdtId1 = new SdtId();
                sdtId1.Val = 100 + i + 1;

                SdtPlaceholder sdtPlaceholder1 = new SdtPlaceholder();
                DocPartReference docPartReference1 = new DocPartReference(); //{ Val = "12094F6314EF4D9B85FCD4B9C39FFB77" };

                sdtPlaceholder1.Append(docPartReference1);
                ShowingPlaceholder showingPlaceholder1 = new ShowingPlaceholder();

                sdtProperties1.Append(sdtAlias1);
                sdtProperties1.Append(tag1);
                sdtProperties1.Append(sdtId1);
                sdtProperties1.Append(sdtPlaceholder1);
                sdtProperties1.Append(showingPlaceholder1);
                SdtEndCharProperties sdtEndCharProperties1 = new SdtEndCharProperties();

                SdtContentBlock sdtContentBlock1 = new SdtContentBlock();

                Paragraph paragraph1 = new Paragraph() { RsidParagraphAddition = "0042569B", RsidParagraphProperties = "0042569B", RsidRunAdditionDefault = "0042569B", ParagraphId = "08643F79", TextId = "77777777" };

                Run run1 = new Run() { RsidRunProperties = "00342EFC" };

                RunProperties runProperties1 = new RunProperties();
                RunStyle runStyle1 = new RunStyle() { Val = "Heading2Char" };

                runProperties1.Append(runStyle1);
                Text text1 = new Text();
                //text1.Text = "Click here to enter text.";
                text1.Text = "Cick here to test";//string.Format("Content Control : {0}", i + 1);
                

                run1.Append(runProperties1);
                run1.Append(text1);

                paragraph1.Append(run1);

                sdtContentBlock1.Append(paragraph1);

                sdtBlock1.Append(sdtProperties1);
                sdtBlock1.Append(sdtEndCharProperties1);
                sdtBlock1.Append(sdtContentBlock1);

                // I am getting error here 


                IEnumerable<SdtBlock> contentControls = dc.Descendants<SdtBlock>();
                foreach (SdtBlock ctrl in contentControls)
                {
                    sdtAlias1 = ctrl.GetFirstChild<SdtProperties>().GetFirstChild<SdtAlias>();

                    if (sdtAlias1.Val != null && sdtAlias1.Val == "Content Control : 1")
                    {
                        WriteControls wt = new WriteControls();
                        wt.WriteToCOntentCOntrol(ctrl, "Hello");
                    }
                }
             

                mainDocPart.Document.Body.Append(sdtBlock1);



            }
Thanks In Advance,
Shiva.