#381 – Loading .rtf Files Into a RichTextBox

The RichTextBox control supports loading not only Text (.txt) files, but also Rich text (.rtf)  files.

You can load a file using the Load method of the RichTextBox’s Selection property.

        <RichTextBox x:Name="rtfMain" />
            rtfMain.Selection.Load(new FileStream(@"D:\Spade.rtf", FileMode.Open), DataFormats.Rtf);