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Open as text

Posted on 2006-07-15
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Last Modified: 2010-04-23
Hi Experts,

I have a problem i can get my head around.

With Notepad.exe you can open any file type as text. When i try to replicate this using streams it doesnt work.

I only shows about 5 of the characters.

How would i be able to to achieve this?

Cheers,

Tom
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Question by:TommyTwoPints
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4 Comments
 
LVL 34

Expert Comment

by:Sancler
ID: 17115517
What are you trying to replicate it in?  Most of the controls that display text in VB.NET - e.g textbox, messagebox, label - stop reading as soon as they encounter a Null - Chr(0).  Non-text files usually have lots of those in them.  You will probably have to use a .Replace of some sort to change any Nulls to something else before you can display it.

Roger
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LVL 3

Author Comment

by:TommyTwoPints
ID: 17115521
Ok, i was trying to display it in a richtextbox.

Thankyou very much,

Tom
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LVL 3

Author Comment

by:TommyTwoPints
ID: 17115541
when i read the stream using a streamreader, it only gets the first few characters when using the readtoend function.
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LVL 34

Accepted Solution

by:
Sancler earned 2000 total points
ID: 17115986
Try this.  Imports System.IO.  One form. One button.  One OpenFileDialog.  One RichTextBox.  

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        OpenFileDialog1.ShowDialog()
        Dim filename As String = OpenFileDialog1.FileName
        Dim sr As New StreamReader(filename)
        Dim s As String = sr.ReadToEnd
        sr.Close()
        Dim displaytext As String = s.Replace(Chr(0), Chr(126)) ' replaces Null with ~
        RichTextBox1.Text = displaytext
    End Sub

Roger
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