how to disable backspace in a textbox in vb.net wpf?

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how to disable backspace in a textbox in vb.net wpf?

I've already tried

VB

Private Sub TextBox1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
       If e.KeyCode = Keys.Back Or e.KeyCode = Keys.Delete Then
           e.SuppressKeyPress = True
       End If
   End Sub

but it doesn't work in WPF. I dont know why.

Posted 24-Aug-13 20:04pm

hoyice

Updated 25-Aug-13 7:26am

Mike Meinz

v2

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2 solutions

Solution 1

Refer - Key press event in WPF[^].

The code is in C#, but you can use the same logic.

Posted 25-Aug-13 5:56am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

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MuthukaruppanP · Accepted Answer · 2013-08-25T07:47:00

For this use

VB

Private Sub TextBox1_PreviewKeyDown(sender As Object, e As System.Windows.Input.KeyEventArgs) Handles TextBox1.PreviewKeyDown
       If e.Key = Key.Back Then
           e.Handled = True
       End If

Also have a look at
http://msdn.microsoft.com/en-us/library/system.windows.forms.control.previewkeydown.aspx[^]