Mega Code Archive
Inherit TextBox to create custom control based on TextBox
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Imports System
Imports System.Collections
Imports System.IO
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
Public Class FileTextBox
Inherits TextBox
#Region " Component Designer generated code "
Public Sub New(ByVal Container As System.ComponentModel.IContainer)
MyClass.New()
'Required for Windows.Forms Class Composition Designer support
Container.Add(Me)
End Sub
Public Sub New()
MyBase.New()
'This call is required by the Component Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Component 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 Component Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Component Designer
'It can be modified using the Component 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 OnTextChanged(ByVal e As System.EventArgs)
If Not File.Exists(Me.Text) Then
Me.ForeColor = Color.Red
Else
Me.ForeColor = Color.Black
End If
MyBase.OnTextChanged(e)
End Sub
End Class
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