Add a reference to Microsoft.Office.Interop.Word
Open the word doc and save it as a text file. Then load the text file into the RichTextBox.
Imports Microsoft.Office.Interop
Public Class Form1
Dim appWord As New Word.Application
Dim docWord As New Word.Document
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
docWord = appWord.Documents.Open(My.Computer.FileSystem.SpecialDirectories.MyDocuments & _
"\Effective Conservative.docx")
Dim document_Renamed As New Word.Document()
docWord.SaveAs(My.Computer.FileSystem.SpecialDirectories.MyDocuments & _
"\EffectiveConservative.txt", _
Word.WdSaveFormat.wdFormatText)
docWord.Close()
appWord.Quit()
Dim txtFileName As String = My.Computer.FileSystem.SpecialDirectories.MyDocuments & _
"\EffectiveConservative.txt"
rtb1.LoadFile(txtFileName, RichTextBoxStreamType.PlainText)
End Sub
End Sub
End Class
That should Solve your problem