copy text from ICSharpCode.TextEditor.TexEditorControl to Word 2007

Question

I'm writing a Word Add-In to hightlight the source code.
I have colored the text in ICSharpCode.TextEditor.TexEditorControl and now I want to copy it to MS Word with these colors. If I do that by ctrl+c/ctrl+v all works fine. But how can I do it in c#?