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Fazer Textbox aceitar apenas determinados caracteres

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    Private Sub TextBox1_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
        If Not ([Char].IsLetter(e.KeyChar) OrElse [Char].IsDigit(e.KeyChar) OrElse [Char].IsControl(e.KeyChar)) Then
            e.Handled = True
        End If
    End Sub

.NET/T-SQL, JAVA, PHP, Javascript Developer | Business Intelligence | Gestão de Sistemas de Informação Empresariais

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