Public Class MyTxtBx
    Inherits System.Windows.Forms.TextBox
    Public Sub New()
        Me.Text = "0"
    End Sub
 
    <System.ComponentModel.Browsable(False)> _
    Public Overrides Property Text() As String
        Get
            Return MyBase.Text
        End Get
        Set(ByVal Value As String)
            MyBase.Text = Value
        End Set
    End Property
End Class