File reading in vb.net

[dharwada]

I want to append (concatenate) a string to each line in a text file.
My program should work like this.
Suppose I give the text file name in one textbox(the file may be present anywhere in the computer)
and in the other textbox if I give the string.

Now when I click a button, the resultant file(new file with appended string), should be stored again.

Please tell me how to get the file in the textbox from a dialog box.

Also can anyone supply some sample code for this file reading?

[Cander]

Dim strmWriter as System.IO.StreamWriter = New System.IO.StreamWriter(filename,True) ' True tells it to append. If false, it overwrites
 
strmWriter.Writeline(text_to_add)

Easy as pie.

[Cander]

And in related information for future reference. Reading a file

Dim filestream as System.IO.StreamReader= New System.IO.StreamReader(Filename)
Dim FileLine as String
 
Do Until filestream.Peek = -1
      FileLine = filestream.ReadLine()
Loop