Hi,

I have found an exception "Object does not match target type." in the
following circumstances:

- Using Microsoft Word 2003. It does not happen with Microsoft Word 2002.
- Using Reflection to manipulate Word instead of late binding (Option Strict
Off) in VB.Net

The code to reproduce the problem is:

     Dim objWordType As Type
     Dim objWordApplication As Object
     Dim colWordDocuments As Object
     Dim objWordDocument As Object

     Try
        objWordType = Type.GetTypeFromProgID("Word.Application.11")
        If Not (objWordType Is Nothing) Then
           objWordApplication =
System.Activator.CreateInstance(objWordType)
           colWordDocuments = objWordType.InvokeMember("Documents",
Reflection.BindingFlags.GetProperty, Nothing, objWordApplication, Nothing)
           ' This line causes exception "Object does not match target
type."
           objWordDocument = objWordType.InvokeMember("Add",
Reflection.BindingFlags.InvokeMethod, Nothing, colWordDocuments, Nothing)
        End If
     Catch objException As Exception
        MessageBox.Show(objException.ToString)
     End Try

It works fine with Word 2002 and this other code using late binding works
fine with Word 2003:

     Try
        objWordType = Type.GetTypeFromProgID("Word.Application.11")
        If Not (objWordType Is Nothing) Then
           objWordApplication =
System.Activator.CreateInstance(objWordType)
           colWordDocuments = objWordApplication.Documents
           objWordDocument = colWordDocuments.Add
        End If
     Catch objException As Exception
        MessageBox.Show(objException.ToString)
     End Try

I have omitted the cleanup of objects, so you will have to use the Task
Manager to kill winword.exe instances.

Note that I do not want to use a COM reference.

Any ideas?

Thanks in advance,

Carlos Quintero