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Detectar cambios en DataSet

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Hola Amigos,

Tengo una aplicacion WinForms con VB2008 y SQL2008.

En un formulario tengo varios controles enlazados a datos con un DataSet, TableAdapter y BindingSource.

Estoy teniendo problemas para detectar si hay cambios sin guardar cuando el Formulario se cierra, ahora tengo este codigo:

PrivateSub frmArticulos_FormClosing(ByVal sender AsObject, ByVal e As System.Windows.Forms.FormClosingEventArgs) HandlesMe.FormClosingIfMe.DsArticulos.HasChanges ThenIf MsgBox("Hay cambios pendientes de guardar, desea guardarlos ahora?",MsgBoxStyle.Question)=MsgBoxResult.Yes Then
        Guardar()EndIfEndIfEndSub

Lo mas extraño es que tambien ejecuto este mismo codigo en el evento: ARTICULOSBindingSource_PositionChanged; y aca si funciona bien.

Que estoy haciendo mal?

 

Saludos,

 


Jorge Conil

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