Imagine this , you just downloaded the Astoria V1.5 CTP1 and are happily chugging along and decide to make a Silverlight Project that uses the latest Silverlight client library to make some cool app. You open an existing Silverlight app /create a new Silverlight app , and generate the client types by running “Add Service Reference” from Visual Studio. and write some code in the app and hit F5 to run the app . Now , Instead of seeing the poetic beauty that is a Silverlight app built with Astoria , you see this :
The Exception message is :
System.IO.FileNotFoundException occurred Message="Could not load file or assembly 'Microsoft.Data.Services.Client, Version=22.214.171.124, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified." StackTrace: at SilverlightProject1.Page..ctor() at SilverlightProject1.App.Application_Startup(Object sender, StartupEventArgs e) InnerException:
What just happened ?
When the tools which generate the client code for an Astoria Service for Silverlight applications ran , they added a reference to the new client dll, Microsoft.Data.Services.Client.dll with “Copy Local” set to false.
nwServiceReference.BlogServiceProvider prov =
new SilverlightProject1.nwServiceReference.BlogServiceProvider(new Uri("http://ServiceEndPoint"));
When the JIT compiler compiles your Page() constructor method, it scans the method, sees that it references a type named BlogServiceProvider , and attempts to load Microsoft.Data.Services.Client.dll so that the reference can be resolved.
Now , Since we set Copy Local to false , the Client DLL is not copied into the XAP file ,and the Silverlight CLR cannot find the file , it throws the above exception.
We can verify by opening the xap file in winrar or some other archiving utility.
In your Silverlight project, for the reference to “'Microsoft.Data.Services.Client.dll” , Set “Copy Local” to “True” and rebuild your Silverlight XAP.
What about “Update Service Reference”?
Same issue , follow same resolution.
When will this be fixed?
We are tracking this issue and will release a fix in a future release of ADO.NET Data Services v1.5
PingBack from http://www.anith.com/?p=21948
Thank you for submitting this cool story - Trackback from DotNetShoutout
We received a few questions asking if CTP1 of ADO.NET Data Services v1.5 includes a Silverlight library.