title: textbox accept only digits
body: <pre><code>Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
  
  
      Dim allowedChars As String = "0123456789$,"
  
      If allowedChars.IndexOf(e.KeyChar) = -1 Then
          ' Invalid Character
          e.Handled = True
  
  
  
  
      End If
  End Sub
  </code></pre>
  
  <p>this code accept only digits and its working like a charm but if i typed a wrong number its not allowing me to use the delete or the backspace on the keyboard how to solve this problem ?</p>