word_interop.cs

gistfile1.cs

  using System.Collections.Generic;
  using System.IO;
  using System.Linq;
  using System.Xml.Linq;
  public class WordTemplateFiller{
    private readonly Zipper _zipper=new Zipper();
    private const string _pathToCustomPropXml="docprops\\custom.xml";
    /// <returns>path to filled docx</returns>
    public FileInfo FillTemplate(string templatePath,Dictionary<string,string> props){
      var docPath=Path.GetTempFileName();
      using(var tempDir=new TempDirectory()){
        _zipper.Unzip(templatePath,tempDir);
        ModifyPropXml(Path.Combine(tempDir,_pathToCustomPropXml),props);
        _zipper.ZipDir(tempDir,docPath);
      }
      return new FileInfo(docPath);
    }
    private static void ModifyPropXml(string customPropXmlPath,Dictionary<string,string> props){
      var xd=XDocument.Parse(File.ReadAllText(customPropXmlPath));
      foreach(var prop in props){
        xd.Root.Elements()
          .Where(node=>node.Attribute("name").Value==prop.Key)
          .Single().Descendants().First().SetValue(prop.Value);
      }
      File.WriteAllText(customPropXmlPath,xd.ToString());
    }
  }