I need to create a tool to add a polygon by input text like JsonToGeometry example in arcgis-samples-silverlight/GeometryJson.xaml at master · Esri/arcgis-samples-silverlight · GitHub to add in my Silverlight Viewer. Been trying to take that part to create add in but to no avail. I'm new in VB/C# and dont really understand how to write code, eventhough i've been referring to the example using VB studio 2012 add in example. If anybody could guide me on this would be highly appreciated. thanks in advance.