Once installed, follow these steps to get Bing Maps loaded in your Silverlight application:

1. Open your Silverlight application.
2. In the Solution Explorer, right click on Reference for your Silverlight app and add a reference to: Microsoft.Maps.MapControl.dll as well as Microsoft.Maps.MapControl.Common.dll. Both of these DLL’s where in my C:\Program Files (x86)\Bing Maps Silverlight Control\V1\Libraries folder.
3. Open MainPage.xaml. Add a reference to these assemblies in your UserControl:

xmlns:m="clr-namespace:Microsoft.Maps.MapControl; assembly=Microsoft.Maps.MapControl" 

Next, declare the Map control like this:

<Grid x:Name="LayoutRoot" Background="White">     

   <m:Map CredentialsProvider="" Name="myMap" /> 

</Grid> 

At this point you will see the Map rendering in the designer as seen in the screenshot below:

CrendentialsProvider is the API key you get when you register with the Bing Maps Account center. This is a easy, straight forward process that can be done here: https://www.bingmapsportal.com/. Once on the site click on the Create a Bing Maps account in the left hand side of the page. Once you create the account the key will be automatically provided for you.

Demo:

[silverlight: Tip19_BingMaps.xap]

Thank you,

–Mike