NumericTextBox

Allows only numbers to be entered into a text box.

Public Class NumericTextBox
Inherits System.Windows.Forms.TextBox

Private _Long As Long
#Region " Windows Form Designer generated code "

Public Sub New()
MyBase.New()

'This call is required by the Windows Form Designer.
InitializeComponent()

'Add any initialization after the InitializeComponent() call

End Sub

'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer

'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
components = New System.ComponentModel.Container()
End Sub

#End Region

Protected Overrides Sub OnKeyPress(ByVal e As System.Windows.Forms.KeyPressEventArgs)
If Char.IsControl(e.KeyChar) = False And Char.IsDigit(e.KeyChar) = False Then
e.Handled = True
End If
End Sub

Private Sub NumericTextBox_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.TextChanged
Try
_Long = Text
Text = _Long
Catch ex As InvalidCastException
If Text = "" Then
_Long = 0
Else
Text = _Long.ToString
End If
End Try
End Sub
End Class

Craig