Agregar encabezado y pie de página a un documento de palabra vacía existente con OpenXML SDK 2.0

Question

Estoy tratando de agregar un encabezado y pie de página a un documento de palabra vacío.

Utilizo este código para agregar la pieza de encabezado en word/document.xml cuando cambio docx a zip.

 ApplyHeader(doc); 


     public static void ApplyHeader(WordprocessingDocument doc) 
     { 
      // Get the main document part. 
      MainDocumentPart mainDocPart = doc.MainDocumentPart; 

      // Delete the existing header parts. 
      mainDocPart.DeleteParts(mainDocPart.HeaderParts); 

      // Create a new header part and get its relationship id. 
      HeaderPart newHeaderPart = mainDocPart.AddNewPart<HeaderPart>(); 
      string rId = mainDocPart.GetIdOfPart(newHeaderPart); 

      // Call the GeneratePageHeaderPart helper method, passing in 
      // the header text, to create the header markup and then save 
      // that markup to the header part. 
      GeneratePageHeaderPart("Test1").Save(newHeaderPart); 

      // Loop through all section properties in the document 
      // which is where header references are defined. 
      foreach (SectionProperties sectProperties in 
       mainDocPart.Document.Descendants<SectionProperties>()) 
      { 
       // Delete any existing references to headers. 
       foreach (HeaderReference headerReference in 
        sectProperties.Descendants<HeaderReference>()) 
        sectProperties.RemoveChild(headerReference); 

       // Create a new header reference that points to the new 
       // header part and add it to the section properties. 
       HeaderReference newHeaderReference = 
        new HeaderReference() { Id = rId, Type = HeaderFooterValues.First }; 
       sectProperties.Append(newHeaderReference); 
      } 

      // Save the changes to the main document part. 
      mainDocPart.Document.Save(); 
     } 

    private static Header GeneratePageHeaderPart(string HeaderText) 
    { 
     var element = 
      new Header(
      new Paragraph(
       new ParagraphProperties(
       new ParagraphStyleId() { Val = "Header1" }), 
       new Run(
       new Text(HeaderText)) 
      ) 
     ); 

     return element; 
    } 

Este código funciona, pero no hay relación cabecera creados en Word/_rels/document.xml.rels.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"> 
    <Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/webSettings" Target="webSettings.xml"/> 
    <Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/settings" Target="settings.xml"/> 
    <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/> 
    <Relationship Id="rId5" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme" Target="theme/theme1.xml"/> 
    <Relationship Id="rId4" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/fontTable" Target="fontTable.xml"/> 
</Relationships> 

Y encabezado de tipo de contenido de no más de [Content_Types] .xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?> 
<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"> 
    <Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/> 
    <Default Extension="xml" ContentType="application/xml"/> 
    <Override PartName="/word/document.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.document.main+xml"/> 
    <Override PartName="/word/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.styles+xml"/> 
    <Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/> 
    <Override PartName="/word/settings.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.settings+xml"/> 
    <Override PartName="/word/theme/theme1.xml" ContentType="application/vnd.openxmlformats-officedocument.theme+xml"/> 
    <Override PartName="/word/fontTable.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.fontTable+xml"/> 
    <Override PartName="/word/webSettings.xml" ContentType="application/vnd.openxmlformats-officedocument.wordprocessingml.webSettings+xml"/> 
    <Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/> 
</Types> 

Sin embargo, header.xml se creó en Word/

<?xml version="1.0" encoding="utf-8"?><w:hdr xmlns:w="http://schemas.openxmlformats.org/wordprocessingml/2006/main"><w:p><w:pPr><w:pStyle w:val="Header1" /></w:pPr><w:r><w:t>Test1</w:t></w:r></w:p></w:hdr> 

Y mi palabra/document.xml para mostrar que se agrega mi encabezado.

<w:sectPr w:rsidR="003310CE" w:rsidSect="00D928B6"> 
<w:pgSz w:w="11906" w:h="16838" /> 
<w:pgMar w:top="1417" w:right="1417" w:bottom="1417" w:left="1417" w:header="708" w:footer="708" w:gutter="0" /> 
<w:cols w:space="708" /><w:docGrid w:linePitch="360" /> 
<w:headerReference w:type="first" r:id="Recfa318e6a7c44ff" /> 
</w:sectPr> 

Así que mi pregunta es cómo agregar el encabezado y el pie de página correctamente?

Gracias por su ayuda.

Answer 1

Encuentro la solución por mí mismo.

De hecho, la adición de un encabezado o un pie de página en un docx con OpenXml implica que:

de documento tiene que existir.

Guardar y cerrar documento antes de agregar un encabezado o un pie de página no funciona.

WordprocessingDocument document = WordprocessingDocument.Open(path, true); 
<operations on docx> 
document.Save(); 
document.Close(); 
ChangeHeader(document); 

Tienes que volver a abrir por segunda vez tu docx para crear una nueva instanciación del documento.

solución correcta será (con solución James Wood):

WordprocessingDocument document = WordprocessingDocument.Open(path, true); 
<operations on docx> 
document.Save(); 
document.Close(); 
ChangeHeader(path); 

    public static void ChangeHeader(String documentPath) 
    { 
     // Replace header in target document with header of source document. 
     using (WordprocessingDocument document = WordprocessingDocument.Open(documentPath, true)) 
     { 
      // Get the main document part 
      MainDocumentPart mainDocumentPart = document.MainDocumentPart; 

      // Delete the existing header and footer parts 
      mainDocumentPart.DeleteParts(mainDocumentPart.HeaderParts); 
      mainDocumentPart.DeleteParts(mainDocumentPart.FooterParts); 

      // Create a new header and footer part 
      HeaderPart headerPart = mainDocumentPart.AddNewPart<HeaderPart>(); 
      FooterPart footerPart = mainDocumentPart.AddNewPart<FooterPart>(); 

      // Get Id of the headerPart and footer parts 
      string headerPartId = mainDocumentPart.GetIdOfPart(headerPart); 
      string footerPartId = mainDocumentPart.GetIdOfPart(footerPart); 

      GenerateHeaderPartContent(headerPart); 

      GenerateFooterPartContent(footerPart); 

      // Get SectionProperties and Replace HeaderReference and FooterRefernce with new Id 
      IEnumerable<SectionProperties> sections = mainDocumentPart.Document.Body.Elements<SectionProperties>(); 

      foreach (var section in sections) 
      { 
       // Delete existing references to headers and footers 
       section.RemoveAllChildren<HeaderReference>(); 
       section.RemoveAllChildren<FooterReference>(); 

       // Create the new header and footer reference node 
       section.PrependChild<HeaderReference>(new HeaderReference() { Id = headerPartId }); 
       section.PrependChild<FooterReference>(new FooterReference() { Id = footerPartId }); 
      } 
     } 
    } 


public static void GenerateHeaderPartContent(HeaderPart part) 
     { 
      Header header1 = new Header() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "w14 wp14" } }; 
      header1.AddNamespaceDeclaration("wpc", "http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas"); 
      header1.AddNamespaceDeclaration("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006"); 
      header1.AddNamespaceDeclaration("o", "urn:schemas-microsoft-com:office:office"); 
      header1.AddNamespaceDeclaration("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"); 
      header1.AddNamespaceDeclaration("m", "http://schemas.openxmlformats.org/officeDocument/2006/math"); 
      header1.AddNamespaceDeclaration("v", "urn:schemas-microsoft-com:vml"); 
      header1.AddNamespaceDeclaration("wp14", "http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing"); 
      header1.AddNamespaceDeclaration("wp", "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"); 
      header1.AddNamespaceDeclaration("w10", "urn:schemas-microsoft-com:office:word"); 
      header1.AddNamespaceDeclaration("w", "http://schemas.openxmlformats.org/wordprocessingml/2006/main"); 
      header1.AddNamespaceDeclaration("w14", "http://schemas.microsoft.com/office/word/2010/wordml"); 
      header1.AddNamespaceDeclaration("wpg", "http://schemas.microsoft.com/office/word/2010/wordprocessingGroup"); 
      header1.AddNamespaceDeclaration("wpi", "http://schemas.microsoft.com/office/word/2010/wordprocessingInk"); 
      header1.AddNamespaceDeclaration("wne", "http://schemas.microsoft.com/office/word/2006/wordml"); 
      header1.AddNamespaceDeclaration("wps", "http://schemas.microsoft.com/office/word/2010/wordprocessingShape"); 

      Paragraph paragraph1 = new Paragraph() { RsidParagraphAddition = "00164C17", RsidRunAdditionDefault = "00164C17" }; 

      ParagraphProperties paragraphProperties1 = new ParagraphProperties(); 
      ParagraphStyleId paragraphStyleId1 = new ParagraphStyleId() { Val = "Header" }; 

      paragraphProperties1.Append(paragraphStyleId1); 

      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Header"; 

      run1.Append(text1); 

      paragraph1.Append(paragraphProperties1); 
      paragraph1.Append(run1); 

      header1.Append(paragraph1); 

      part.Header = header1; 
     } 

     public static void GenerateFooterPartContent(FooterPart part) 
     { 
      Footer footer1 = new Footer() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "w14 wp14" } }; 
      footer1.AddNamespaceDeclaration("wpc", "http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas"); 
      footer1.AddNamespaceDeclaration("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006"); 
      footer1.AddNamespaceDeclaration("o", "urn:schemas-microsoft-com:office:office"); 
      footer1.AddNamespaceDeclaration("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"); 
      footer1.AddNamespaceDeclaration("m", "http://schemas.openxmlformats.org/officeDocument/2006/math"); 
      footer1.AddNamespaceDeclaration("v", "urn:schemas-microsoft-com:vml"); 
      footer1.AddNamespaceDeclaration("wp14", "http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing"); 
      footer1.AddNamespaceDeclaration("wp", "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"); 
      footer1.AddNamespaceDeclaration("w10", "urn:schemas-microsoft-com:office:word"); 
      footer1.AddNamespaceDeclaration("w", "http://schemas.openxmlformats.org/wordprocessingml/2006/main"); 
      footer1.AddNamespaceDeclaration("w14", "http://schemas.microsoft.com/office/word/2010/wordml"); 
      footer1.AddNamespaceDeclaration("wpg", "http://schemas.microsoft.com/office/word/2010/wordprocessingGroup"); 
      footer1.AddNamespaceDeclaration("wpi", "http://schemas.microsoft.com/office/word/2010/wordprocessingInk"); 
      footer1.AddNamespaceDeclaration("wne", "http://schemas.microsoft.com/office/word/2006/wordml"); 
      footer1.AddNamespaceDeclaration("wps", "http://schemas.microsoft.com/office/word/2010/wordprocessingShape"); 

      Paragraph paragraph1 = new Paragraph() { RsidParagraphAddition = "00164C17", RsidRunAdditionDefault = "00164C17" }; 

      ParagraphProperties paragraphProperties1 = new ParagraphProperties(); 
      ParagraphStyleId paragraphStyleId1 = new ParagraphStyleId() { Val = "Footer" }; 

      paragraphProperties1.Append(paragraphStyleId1); 

      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Footer"; 

      run1.Append(text1); 

      paragraph1.Append(paragraphProperties1); 
      paragraph1.Append(run1); 

      footer1.Append(paragraph1); 

      part.Footer = footer1; 
     } 

Answer 2

Estoy bastante seguro de lo que está mal con su código, sospecho que es la forma en que está cambiando las referencias.

En cualquier caso, tengo un ejemplo de trabajo que con suerte podría guiarlo. mina de

me he basado en ejemplos aquí: http://msdn.microsoft.com/en-us/library/office/cc546917.aspx

que utiliza el SDK de Open XML 2.0 Productividad herramienta para generar las partes de encabezado y pie de página. Primero creo un documento con mi diseño deseado y luego lo abro con la herramienta, genera el XML o el Código. Puede obtenerlo aquí: http://www.microsoft.com/en-us/download/details.aspx?id=5124

La única salvedad de esto es que asume que el documento ya tiene algún contenido en el cuerpo, una sola letra lo hará. No estoy seguro de si esto puede evitarse, intenté abrir un documento vacío en la herramienta de productividad y sufre el mismo error: "No se puede abrir el archivo: el archivo de almacenamiento no puede tener el tamaño 0". En mi ejemplo fallará en WordprocessingDocument.Open.

Quizás en el caso de un documento vacío, primero debe crear un cuerpo. En cualquier caso, sospecho que el objetivo principal de esta pregunta es agregar un encabezado y pie de página, así que siento que esta es una respuesta válida.

Si lo desea, puedo proporcionar los archivos de proyecto/cs reales.

Espero que esto ayude.

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using DocumentFormat.OpenXml.Packaging; 
using DocumentFormat.OpenXml.Wordprocessing; 
using DocumentFormat.OpenXml; 

namespace HeaderFooterDocX 
{ 
    class Program 
    { 
     static void Main(string[] args) 
     { 
      ChangeHeader(@"C:\Users\James\Desktop\Document.docx"); 
     } 

     static void ChangeHeader(String documentPath) 
     { 
      // Replace header in target document with header of source document. 
      using (WordprocessingDocument document = WordprocessingDocument.Open(documentPath, true)) 
      { 
       // Get the main document part 
       MainDocumentPart mainDocumentPart = document.MainDocumentPart; 

       // Delete the existing header and footer parts 
       mainDocumentPart.DeleteParts(mainDocumentPart.HeaderParts); 
       mainDocumentPart.DeleteParts(mainDocumentPart.FooterParts); 

       // Create a new header and footer part 
       HeaderPart headerPart = mainDocumentPart.AddNewPart<HeaderPart>(); 
       FooterPart footerPart = mainDocumentPart.AddNewPart<FooterPart>(); 

       // Get Id of the headerPart and footer parts 
       string headerPartId = mainDocumentPart.GetIdOfPart(headerPart); 
       string footerPartId = mainDocumentPart.GetIdOfPart(footerPart); 

       GenerateHeaderPartContent(headerPart); 

       GenerateFooterPartContent(footerPart); 

       // Get SectionProperties and Replace HeaderReference and FooterRefernce with new Id 
       IEnumerable<SectionProperties> sections = mainDocumentPart.Document.Body.Elements<SectionProperties>(); 

       foreach (var section in sections) 
       { 
        // Delete existing references to headers and footers 
        section.RemoveAllChildren<HeaderReference>(); 
        section.RemoveAllChildren<FooterReference>(); 

        // Create the new header and footer reference node 
        section.PrependChild<HeaderReference>(new HeaderReference() { Id = headerPartId }); 
        section.PrependChild<FooterReference>(new FooterReference() { Id = footerPartId }); 
       } 
      } 
     } 

     static void GenerateHeaderPartContent(HeaderPart part) 
     { 
      Header header1 = new Header() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "w14 wp14" } }; 
      header1.AddNamespaceDeclaration("wpc", "http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas"); 
      header1.AddNamespaceDeclaration("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006"); 
      header1.AddNamespaceDeclaration("o", "urn:schemas-microsoft-com:office:office"); 
      header1.AddNamespaceDeclaration("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"); 
      header1.AddNamespaceDeclaration("m", "http://schemas.openxmlformats.org/officeDocument/2006/math"); 
      header1.AddNamespaceDeclaration("v", "urn:schemas-microsoft-com:vml"); 
      header1.AddNamespaceDeclaration("wp14", "http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing"); 
      header1.AddNamespaceDeclaration("wp", "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"); 
      header1.AddNamespaceDeclaration("w10", "urn:schemas-microsoft-com:office:word"); 
      header1.AddNamespaceDeclaration("w", "http://schemas.openxmlformats.org/wordprocessingml/2006/main"); 
      header1.AddNamespaceDeclaration("w14", "http://schemas.microsoft.com/office/word/2010/wordml"); 
      header1.AddNamespaceDeclaration("wpg", "http://schemas.microsoft.com/office/word/2010/wordprocessingGroup"); 
      header1.AddNamespaceDeclaration("wpi", "http://schemas.microsoft.com/office/word/2010/wordprocessingInk"); 
      header1.AddNamespaceDeclaration("wne", "http://schemas.microsoft.com/office/word/2006/wordml"); 
      header1.AddNamespaceDeclaration("wps", "http://schemas.microsoft.com/office/word/2010/wordprocessingShape"); 

      Paragraph paragraph1 = new Paragraph() { RsidParagraphAddition = "00164C17", RsidRunAdditionDefault = "00164C17" }; 

      ParagraphProperties paragraphProperties1 = new ParagraphProperties(); 
      ParagraphStyleId paragraphStyleId1 = new ParagraphStyleId() { Val = "Header" }; 

      paragraphProperties1.Append(paragraphStyleId1); 

      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Header"; 

      run1.Append(text1); 

      paragraph1.Append(paragraphProperties1); 
      paragraph1.Append(run1); 

      header1.Append(paragraph1); 

      part.Header = header1; 
     } 

     static void GenerateFooterPartContent(FooterPart part) 
     { 
      Footer footer1 = new Footer() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "w14 wp14" } }; 
      footer1.AddNamespaceDeclaration("wpc", "http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas"); 
      footer1.AddNamespaceDeclaration("mc", "http://schemas.openxmlformats.org/markup-compatibility/2006"); 
      footer1.AddNamespaceDeclaration("o", "urn:schemas-microsoft-com:office:office"); 
      footer1.AddNamespaceDeclaration("r", "http://schemas.openxmlformats.org/officeDocument/2006/relationships"); 
      footer1.AddNamespaceDeclaration("m", "http://schemas.openxmlformats.org/officeDocument/2006/math"); 
      footer1.AddNamespaceDeclaration("v", "urn:schemas-microsoft-com:vml"); 
      footer1.AddNamespaceDeclaration("wp14", "http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing"); 
      footer1.AddNamespaceDeclaration("wp", "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"); 
      footer1.AddNamespaceDeclaration("w10", "urn:schemas-microsoft-com:office:word"); 
      footer1.AddNamespaceDeclaration("w", "http://schemas.openxmlformats.org/wordprocessingml/2006/main"); 
      footer1.AddNamespaceDeclaration("w14", "http://schemas.microsoft.com/office/word/2010/wordml"); 
      footer1.AddNamespaceDeclaration("wpg", "http://schemas.microsoft.com/office/word/2010/wordprocessingGroup"); 
      footer1.AddNamespaceDeclaration("wpi", "http://schemas.microsoft.com/office/word/2010/wordprocessingInk"); 
      footer1.AddNamespaceDeclaration("wne", "http://schemas.microsoft.com/office/word/2006/wordml"); 
      footer1.AddNamespaceDeclaration("wps", "http://schemas.microsoft.com/office/word/2010/wordprocessingShape"); 

      Paragraph paragraph1 = new Paragraph() { RsidParagraphAddition = "00164C17", RsidRunAdditionDefault = "00164C17" }; 

      ParagraphProperties paragraphProperties1 = new ParagraphProperties(); 
      ParagraphStyleId paragraphStyleId1 = new ParagraphStyleId() { Val = "Footer" }; 

      paragraphProperties1.Append(paragraphStyleId1); 

      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Footer"; 

      run1.Append(text1); 

      paragraph1.Append(paragraphProperties1); 
      paragraph1.Append(run1); 

      footer1.Append(paragraph1); 

      part.Footer = footer1; 
     } 
    } 
} 

Answer 3

este código funcionó para mí. Tome en consideración:

1. La relación del jefe Id es "r97" en mi ejemplo. Tal vez le gustaría decidir un rDI único en su propia
2. igual para la relación de usuario del pie de página ("r98")
3. Tanto el encabezado como el pie de página tienen un párrafo codificado con algo de texto.

4. estoy asumiendo un documento ya existe

     using (WordprocessingDocument doc = WordprocessingDocument.Open(destination, true)) 
         { 
          var mainDocPart = doc.MainDocumentPart; 
          if (doc == null) { 
           mainDocPart = doc.AddMainDocumentPart(); 
          } 
   
          if (mainDocPart.Document == null) 
          { 
           mainDocPart.Document = new Document(); 
          } 
   
          ApplyHeader(doc); 
   
          ApplyFooter(doc); 
         } 
   

método ApplyHeader:

public static void ApplyHeader(WordprocessingDocument doc) 
     { 
      // Get the main document part. 
      MainDocumentPart mainDocPart = doc.MainDocumentPart; 

      HeaderPart headerPart1 = mainDocPart.AddNewPart<HeaderPart>("r97"); 



      Header header1 = new Header(); 

      Paragraph paragraph1 = new Paragraph(){ }; 



      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Header stuff"; 

      run1.Append(text1); 

      paragraph1.Append(run1); 


      header1.Append(paragraph1); 

      headerPart1.Header = header1; 



      SectionProperties sectionProperties1 = mainDocPart.Document.Body.Descendants<SectionProperties>().FirstOrDefault(); 
      if (sectionProperties1 == null) 
      { 
       sectionProperties1 = new SectionProperties() { }; 
       mainDocPart.Document.Body.Append(sectionProperties1); 
      } 
      HeaderReference headerReference1 = new HeaderReference() { Type = HeaderFooterValues.Default, Id = "r97" }; 


      sectionProperties1.InsertAt(headerReference1,0); 

     } 

método ApplyFooter:

public static void ApplyFooter(WordprocessingDocument doc) 
     { 
      // Get the main document part. 
      MainDocumentPart mainDocPart = doc.MainDocumentPart; 

      FooterPart footerPart1 = mainDocPart.AddNewPart<FooterPart>("r98"); 



      Footer footer1 = new Footer(); 

      Paragraph paragraph1 = new Paragraph() { }; 



      Run run1 = new Run(); 
      Text text1 = new Text(); 
      text1.Text = "Footer stuff"; 

      run1.Append(text1); 

      paragraph1.Append(run1); 


      footer1.Append(paragraph1); 

      footerPart1.Footer = footer1; 



      SectionProperties sectionProperties1 = mainDocPart.Document.Body.Descendants<SectionProperties>().FirstOrDefault(); 
      if (sectionProperties1 == null) 
      { 
       sectionProperties1 = new SectionProperties() { }; 
       mainDocPart.Document.Body.Append(sectionProperties1); 
      } 
      FooterReference footerReference1 = new FooterReference() { Type = DocumentFormat.OpenXml.Wordprocessing.HeaderFooterValues.Default, Id = "r98" }; 


      sectionProperties1.InsertAt(footerReference1, 0); 

     } 

Enjoy,