>Reuse is the issue here. In VFP, it's easy to create custom property and custom method. This feature is very useful because it gives us convenient way of doing things. I want to have a custom method which will contain a routine that will enable/disable particular controls or objects within a form. In VFP, I can easily create a custom method say ObjectEnable. It will contain the below method:
>

>LParameters lEnable
>With Thisform
>   .txtBox1.Enabled = lEnable
>   .txtBox2.Enabled = lEnable
>   .txtBox3.Enabled = !lEnable
>   .cmdDelete.Enabled = lEnable
>Endwith
>
>I can call the method anywhere in the form say in the click event of a particular button:
>
>Thisform.ObjectEnable(.T.) - To enable the controls
>
>or
>
>Thisform.ObjectEnable(.F.) - To disable the controls
>

>I don't how to do it in VB?

The VB code to do this is the same, except that you must write your method in code. Open the code window of your form and insert this code:

Private Sub ObjectEnable(lEnable As Boolean)
    txtAddress1.Enabled = lEnable
    txtAddress2.Enabled = Not lEnable
End Sub

Note you do not use thisform. Use nothing or "Me."
Here is a trick you can use to hit all your TextBox controls:

    Dim loCtrl As TextBox
    For Each loCtrl In Me.Controls
        If TypeOf loCtrl Is TextBox Then
            loCtrl.Enabled = lEnable
        End If
    Next