How to decide the type of a custom lookless control on run time.I have to decide the controls type(ie,whether textbox or combo) on runtime(actually when some Dependency property is bound).How can i do it? Can i define where to inherit from on run time..?
您创建一个从FramewrokElement(或Decorator,如果您希望快速实现并且不关心将其用于不应该做的事情的类型)继承的控件,并在依赖属性时将所需的控件作为控件的子级创建被设置。
You can use a Trigger that sets the ControlTemplate property of your control.
<Style TargetType={x:Type local:MyControl}>
<Style.Triggers>
<Trigger Property="MyProperty" Value="MyValue1">
<Setter Property="ControlTemplate">
<Setter.Value>
<ControlTemplate TargetType={x:Type local:MyControl}>
<!-- first template -->
</ControlTemplate
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="MyProperty" Value="MyValue2">
<Setter Property="ControlTemplate">
<Setter.Value>
<ControlTemplate TargetType={x:Type local:MyControl}>
<!-- second template -->
</ControlTemplate
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers
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