Binding gone

Question

I have an active binding. And after I do some steps in my programm, I can see, that the binding is gone. The property has no binding any more. The property has the last value, which it has got from the binding, when it was active moments ago.
I don't see, that I set this property in my code behind manueally (which can destroy the binding).
So I am asking, if it is possible to monitor the existence of a binding to a property. So I can set a breakpoint when I can determine, that the binding is gone and hopefully the call stack will help me then.
Thanks.

Answer 1

The binding won't be cleared unless you explicitly clear it, for example using the BindingOperations.ClearBinding method (http://msdn.microsoft.com/en-us/library/ms748951(v=vs.110).aspx),
or set the value of the bound target property directly in your code.
>>...if it is possible to monitor the existence of a binding to a property. So I can set a breakpoint when I can determine, that the binding is gone and hopefully the call stack will help me then
No. You can use the GetBindingExpression method to get a binding for a control's property:
http://msdn.microsoft.com/en-us/library/system.windows.data.bindingoperations.getbindingexpression(v=vs.110).aspx.
If it returns NULL there is no binding. But there is no event fired when a binding is cleared so you won't be able to detect and break execution if and when this happens.
Please upload a reproducable sample of your issue to OneDrive along with a detailed explanation of the binding and why you think it gets cleared if you want any further help on this.
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