Why doesn't this SetBinding ImageSourceProperty Work?

Question

let mtvCapView = Rendering.MTViewerCaptureViewProvider(subRead)
let image = Image()
let imageBinding = Data.Binding("ImageElement")
imageBinding.Source <- mtvCapView
image.SetBinding(Image.SourceProperty, imageBinding)
....
Grid.SetColumn(image, 1) 
grid.Children.Add(image)    

The MTViewerCaptureViewProvider class exposes an property ImageElement which is set and should work here. If I:

Grid.SetColumn(mtvCapView.ImageElement, 1) 
grid.Children.Add(mtvCapView.ImageElement)

This works. Why does the other not?

Answer 1

If I look at the variable and property-names, I think you're trying to set an image as the image source of an image:

MTViewerCaptureViewProvider has a property ImageElement. If the name is correct , it gives you already an Image, not an ImageSource. In the binding then your try to bind this image to the ImageSource of your newly created Image.

Maybe there existst a TypeConverter for Image to ImageSource that is implicitely used, but I don't think so. Try either to use the Image itslelf or get the ImageSource of the MTViewerCaptureViewProvider.ImageElement.

If you work with VisualStudio look in the output-window. Binding exceptions will be shown there.