Remove/Edit word office builtindocumentproperties in c#

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Please need your help regarding this code. I am writing a code in c# that can will clear a word document built in property, and also replace it with a provided replacement where provided. Base on the example i found online in microsft support website http://support.microsoft.com/kb/303296 , my code is alright and suppose to work as i don't get any compile error as well. but is not doing what i ask it to do as i don't get any result. Please guys , will really appreciate it if some one will help me with an alternative or point out my error so that the weeks i spent will ruin in vain. Thanks you as you help. Below is my code.

C#

private void execute_Click(object sender, EventArgs e)
        {
             Word.Application wapp; 
             Word.Document dc = new Word.Document() ;
 Object bSaveChanges = false;
           string chosen_file = "";
           chosen_file = openFD.FileName;
           textBox1.Text = (chosen_file);
           var filter = Path.GetExtension(chosen_file);

           object Filename = chosen_file.ToString();
           if (filter == ".doc" || filter == ".docx")
           {
               wapp = new Word.Application();
               wapp.Visible = true;
               docword = wapp.Documents.Add(ref Filename, ref missing, ref missing, ref missing);

               object _BuiltInProperties = docword.BuiltInDocumentProperties;
                Type typeDocBuiltInProps = _BuiltInProperties.GetType();

                 removeproperty(_BuiltInProperties, typeDocBuiltInProps);// pass parameter
                 docword.Close(ref bSaveChanges, ref missing, ref missing);
                 wapp.Quit(ref bSaveChanges, ref missing, ref missing);
           }
  }

 private void removeproperty(object _BuiltInProperties, Type typeDocBuiltInProps)
        {

            string subjectprop = "Subject";
            string subjectValue = "";
            string companyprop = "Company";
            string companyvalue = txtcompany.Text;

             if (clearsubject.Checked == true)
            {
                try
                {
                    Object Subjectprop = typeDocBuiltInProps.InvokeMember("Item", BindingFlags.Default | BindingFlags.GetProperty, null, _BuiltInProperties, new object[] { "Subject" });
                    Type typeSubjectprop = Subjectprop.GetType();

                    typeSubjectprop.InvokeMember("Item", BindingFlags.Default | BindingFlags.SetProperty, null, Subjectprop, new object[] { subjectprop, subjectValue  });

                }
                catch (COMException)
                {

                }

            }

       if (resetcompany.Checked == true)
            {
                try
                {
                  Object Companyprop = typeDocBuiltInProps.InvokeMember("Item", BindingFlags.Default | BindingFlags.GetProperty, null, _BuiltInProperties, new object[] { "Company" });
                    Type typeCompanyprop = Companyprop.GetType();
                    typeCompanyprop.InvokeMember("Item",
                               BindingFlags.Default |
                               BindingFlags.SetProperty,
                               null, Companyprop,
                               new object[] { companyprop, companyvalue });


                }
                 catch (COMException)
                {

                }


}

Posted 13-Apr-12 16:46pm

Member 8534454

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Nelek 14-Apr-12 8:58am

Did you try debugging? Where is it failing? Any error messages?

2 solutions

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Johnny Glenn · Answer 1 · 2012-04-15T21:23:00

For C# DOCX file format, you can easily add / edit / iterate over document properties using this C# / VB.NET Word library.

Here is a sample C# code:

C#

// Use the component in free mode.
ComponentInfo.SetLicense("FREE-LIMITED-KEY");

// Create new empty document.
var document = new DocumentModel();

// Add various built-in document properties.
document.DocumentProperties.BuiltIn.Add(BuiltInDocumentProperty.Title, "My document title");
document.DocumentProperties.BuiltIn.Add(BuiltInDocumentProperty.Subject, "My document subject");
document.DocumentProperties.BuiltIn.Add(BuiltInDocumentProperty.Author, "John Doe");
document.DocumentProperties.BuiltIn.Add(BuiltInDocumentProperty.Keywords, "keyword1, keyword2, keyword3");

// Save the document to a file.
document.Save("Document.docx", SaveOptions.DocxDefault);

// Load a document from the file.
document = DocumentModel.Load("Document.docx", LoadOptions.DocxDefault);

// Iterate over built-in document properties and write them to Console.
foreach (var builtInProperty in document.DocumentProperties.BuiltIn)
	Console.WriteLine("{0}: {1}", builtInProperty.Key, builtInProperty.Value);

mittel · Answer 2 · 2012-12-13T02:44:00

Solution 2

I don't know if you now need the solution but I do this thing.
My code didn't work in your version too.
I remove external method "removeproperty" and place all code to "execute_Click" and situation became Ok.

Posted 13-Dec-12 2:44am

mittel