Visual Basic 2015 Unleashed

Binding UI Elements with the Binding Markup Extension

You perform data-binding between a user control and a data source via the Binding XAML markup extension. Such an extension requires specifying two properties: ElementName, which is the source item name, and Path, which is the property containing the actual data to bind and whose name must be exposed by the object assigned to ElementName. The following example, in which you have to substitute to the first TextBox in the earlier example, shows how to bind the context of a TextBox to the value of a Slider control so that when the user moves the selector, the slider value is reflected into the TextBox:

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<TextBox Text="{Binding ElementName=ValueSlider,          Path=Value}" ...