I was already able to load a .docx file into my wpf application but it doesn\'t seem to show up in my richtextbox:
if (openFile.ShowDialog() == true)
{
// O
That code shouldn't compile, RichTextBox.Document is of type FlowDocument, and you are assigning it to a string.
Maybe you should look for ways to convert a .docx file to a FlowDocument you can assign to the RichTextBox.
There is a popular tool you can use which is called: Word to XAML
Another options are: