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This would initially make me think I would rather use the Leave event, as it occurs first.However, for code readability, it would make sense to place all validation code in the Validating event.The control also works well when bound to a data source.
This approach is useful when you want to give the user immediate feedback about the data as they are working. Run(form1) End Sub End Class Public Class Form1 Inherits System. Protected Overloads Overrides Sub Dispose(By Val disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components. Dispose(disposing) End Sub Friend With Events Text Box1 As System. Printing Public Class Main Class Shared Sub Main() Dim form1 As Form = New Form1() Application. Initialize Component() 'Add any initialization after the Initialize Component() call End Sub 'Form overrides dispose to clean up the component list. No point in validating anything when the user decides to dismiss the dialog.When users enter data into your application, you may want to verify that the data is valid before your application uses it.