Richtextbox Save To Txt?

so here is my problem im making a simple text editor (to edit a specified file by me) with a richtext box and 2 buttons load and save i have managed so far to make the load button but i have encountered a problem with the save button. once i save the text it saves te text from the richbox to the txt but the whole text is in one line here is my save code (that i use)

Dim FILE_NAME As String = "C:\test.txt"
If System.IO.File.Exists(FILE_NAME) = True Then
Dim objWriter As New System.IO.StreamWriter(FILE_NAME)

[Code].....