Visual Basic 2015 Unleashed

Entering Text with the TextBox Control

Another typical control that is also provided by WPF is the TextBox. You declare one as follows:

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<TextBox Name="TextBox1"         TextChanged="TextBox1_TextChanged"/>

The most common event is TextChanged that is raised when the text is modified and that can be handled as follows:

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Private Sub TextBox1_TextChanged(ByVal sender As System.Object,                                 ByVal e As System.Windows.Controls.                                 TextChangedEventArgs)End Sub

The e object of type TextChangedEventArgs offers a Changes collection property that can be iterated to get a list of changes that affect the control’s content. The TextBox control ...