Binding errors when using ComboBox

[benruehl]

Binding errors when using ComboBox

[benruehl]

I created a small application where I tried to recreate your setup and finally got the errors as well.

Writing

<DataTrigger Binding="{Binding Path=(adonisExtensions:WatermarkExtension.IsWatermarkVisible)}"/>

instead of

<DataTrigger Binding="{Binding (adonisExtensions:WatermarkExtension.IsWatermarkVisible)}"/>

fixed it for me.

Please reopen in case the errors are still present in your application.

[benruehl]

I cannot reproduce this behavior with ComboBoxes but I get similar output for TabControls.

I found this blog post stating that they are harmless and handled internally. It seems the error can occur for all controls that contain dynamically created lists.

To resolve the binding errors you could try to explicitly set the watermark to {x:Null} or an empty string. As I cannot reproduce it, I cannot test that for you.
Alternatively you can change the log level globally as shown here.

[benruehl]

Oh wait I just noticed that you received BindingError 40 and I get BindingError 4. My answer was supposed to target BindingError 4. I will do some research again but as I cannot reproduce it, it will be hard to tackle.