Binding Relative Source in code Behind

Question

Hi all,

I create a custom DP in usercontrol, how can i binding it in code behind using Relative Source? In MSDN i cannot find any example about binding Ralatice source in code behind.

Thanks

Answer 1

You can create the binding, then set its RelativeSource property.  It's just like creating a normal binding, and adding that.

 

The options for the different sources (ie: AncestorType/Level/etc) are part of the RelativeSource class.  There is a C# example here.

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Reed Copsey, Jr. - http://reedcopsey.com
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Answer 2

I create one custom control named ControlDisplay() inluding one custom dp named MyDP and bind it to MyLable content. However when i changed MyDP, the MyLable not update. Here are my code:

public ControlDisplay()

{

this.InitializeComponent();

Binding b = new Binding();

b.RelativeSource = new RelativeSource(RelativeSourceMode.Self);

b.Path = new PropertyPath("MyDP");

MyLable.SetBinding(ContentProperty, b);

}

If i bind using XAML, everything's fine. How can i do it in code behind? 

Answer 3

Hi hungdoan,

You use RelativeSourceMode.Self mode in your code, which makes MyLable bind to itself.

Change the mode to FindAncestor to fix the problem.

      Binding b = new Binding();

      b.RelativeSource = new RelativeSource(RelativeSourceMode.FindAncestor,this.GetType(),1);

      b.Path = new PropertyPath("MyDP");

      MyLable.SetBinding(ContentProperty, b);

If you still have any questions or concerns about this issue, please feel free to let me know.

Best regards,

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Min Zhu [MSFT]
MSDN Community Support | Feedback to us
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Answer 4

thank you very much