Add Custom Properties

[gerardo]

Good day,

Is there a way I can add custom property to RadWatermarkTextBox? For example adding isRequired property and use it in the control template.

 

Thank you.

[Martin Ivanov]

Hello Gerardo,

To achieve your requirement, you can create a custom class that derives from RadWatermarkTextBox and add the custom property there. After this, you can extract the default ControlTemplate of RadWatermarkTextBox and use the new property in the template.

For example:

public class CustomWatermarkTextBox : RadWatermarkTextBox
{
	public bool IsRequired
	{
		get { return (bool)GetValue(IsRequiredProperty); }
		set { SetValue(IsRequiredProperty, value); }
	}

	public static readonly DependencyProperty IsRequiredProperty =
		DependencyProperty.Register(
			"IsRequired", 
			typeof(bool), 
			typeof(CustomWatermarkTextBox), new PropertyMetadata(false));
}

<Window.Resources>
	<ControlTemplate x:Key="CustomWatermarkTextBoxTemplate" TargetType="local:CustomWatermarkTextBox">
		<!-- some elements here -->
		
		<!-- an element in the template that uses the new property -->
		<CheckBox IsChecked="{TemplateBinding IsRequired}" />
		
		<!-- some other elements here -->
	</ControlTemplate>

	<Style TargetType="local:CustomWatermarkTextBox">
		<Setter Property="Template" Value="{StaticResource CustomWatermarkTextBoxTemplate}" />
	</Style>
</Window.Resources>

Regards,
Martin Ivanov
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