[Solved] RadMap MapShapeStyleSelector

[Harshitha]

Does MapShapeStyleSelector class data context be set to viewmodel (using MVVM architecture) by any ways? I had a requirement of this kind , so it will be helpful to know if it feasible or not (using any customized way). I tried my level best but everything went in vain... Please help me. 

[Rosy Topchiyska]

Hi Harshitha,

Thank you for contacting us.

The MapShapeStyleSelector.SelectStyleCore(...) method is called for every shape in a MapShapeLayer to set the shape's style. The MapShapeStyleSelector class does not have a data context property because its purpose is to be used by the specific MapShapeLayer to style its shapes.

From the provided information it is not very clear what is the scenario you are trying to achieve -- could you please provide more details about the final result you are looking for?

I look forward to your reply.

Regards,
Rositsa Topchiyska
Telerik

[Harshitha]

I have a custom behaviour class for SingleSelectionPerLayer behaviour. In that I have a hit test method implemented. My requirement is on click of a particular shape in the map, I want to colorize that map shape area selected based on a property present in my view model.
I treid implementiong SelectStyleCore(..) method in this custom behaviour class but falied to get the MapShapeStyleContext on click of the particular map shape. I also tried having custom class for Style selector but it allows to colorize shapes only during rendering the mapshape and not on particular selection behaviour. And as discussed above it does not allow datacontext to be set to my view model. (as based on that property value I want to set different color for that shape).
So it would be of great help, if you could suggest me anyways through which I can achieve my requirement.

Thanks in advance.

[Rosy Topchiyska]

Hi Harshitha,

Thank you for the information.

The RadMap control provides functionality to set custom attributes to the map shapes. The shapes implement the IMapShape interface that defines the SetAttribute(...) method. You can subscribe to the ShapefileDataSource.ShapeProcessingCompleted event and set all the attributes you need after the shapes are loaded. To see an example, you can take a look at our demo application - Telerik Controls Examples (XAML) - Map - Colorization example (ShapefileDataSource_ShapeProcessingCompleted method in Map.Colorization.Example.xaml.cs file).

I hope this helps. Please, let us know if you have further questions.

Regards,
Rositsa Topchiyska
Telerik

[Harshitha]

Hi,

Thank you for the help. It did help me to a certain extent.

Regards,
Harshitha S