Bind Symbol In MapTip?

Question

Using a FeatureLayer that has different symbols coming from the server... Is there a way to bind the graphics corresponding symbol inside the map tip? This way when using a clusterer (that hides the symbol) it would still show in the map tip! Example: Thanks a lot for any help or ideas!

RyanCoodey · Answer

Jennifer,

The DataContext on a parent control was indeed set, I changed this around and it works great!  Thanks a lot!

JenniferNery · Answer

Yeah that is strange. Element's DataContext inside FeatureLayer.MapTip should inherit its parent if it was not overwritten. The API sets this DataContext to the graphic.Attributes. Check that SymbolDisplay DataContext was not set or StackPanel/Grid that contained it did not have their DataContext set to something else.

So you are not seeing a Symbol displayed? Does your OutFields include the type ID field or field used by your renderer? If it is SimpleRenderer, OutField does not need to contain any field but ClassBreaksRenderer or UniqueValueRenderer rely on fields and their values when determining symbol. Kindly try with the SDK sample first then tweak accordingly with your own service.

RyanCoodey · Answer

Thanks a lot for that example, that is great... I didn't even think to pass the FeatureLayer that way. I am still having issues with the binding though. If I do the binding as in your example: It does not bind to the attribute collection, but to the parent UserControl that hosts the ESRI map control... kind of wierd. I also tried this binding And it seems to bind to the first item in the attribute collection, but not the collection itself... I'll keep playing with the bindings, I'm still a bit new to SL/WPF... If you have any ideas though that would be great. Thanks a ton for all the help!