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Silverlight -RIA Services-This EntitySet of type <> does not support the 'Add' operation


Silverlight -RIA Services-This EntitySet of type <> does not support the 'Add' operation

By : Steven Hayman
Date : October 28 2020, 04:55 PM
fixed the issue. Will look into that further You will want to check out the presentation model. Is there a good reason to combine the two tables? It adds a lot of work that you could avoid by just exposing both tables. If you don't want some of the properties to be available on the client you can use the ExcludeAttribute on them.
http://blogs.msdn.com/deepm/archive/2009/11/20/wcf-ria-services-presentation-model-explained.aspx
code :


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RIA Services EntitySet does not support 'Edit' operation

RIA Services EntitySet does not support 'Edit' operation


By : user1840149
Date : March 29 2020, 07:55 AM
this one helps. It turns out that in the DomainService class one has to implement (or at least to mark "placeholder methods") as "Edit", "Delete",... eg
code :
[Delete]
public void DeleteCulture(Culture currentCulture)
{
   throw new NotImplementedException("UpdateCulture not Implemented yet");
}
[Insert]
public void InsertCulture(Culture newCulture)
{
   throw new NotImplementedException("InsertCulture not Implemented yet");
}
Submit operation failed - NotFound from RIA Services with Silverlight 4 on SubmitChanges()

Submit operation failed - NotFound from RIA Services with Silverlight 4 on SubmitChanges()


By : steve wevsler
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Saurabh and Dan both have good posts on debugging 'Not Found' exceptions.
http://blogs.msdn.com/b/saurabh/archive/2010/03/16/ria-services-application-deployment.aspx
Invoke operation 'myMethod' failed in RIA Services in Silverlight

Invoke operation 'myMethod' failed in RIA Services in Silverlight


By : nian
Date : March 29 2020, 07:55 AM
Does that help On the client side the InvokeOperation.HasErrors will be true and you can get the Exception object from the InvokeOperation.Error. Note, if you handled the error you should also call MarkErrorAsHandled().
Your OnCalculateCompleted might looks something like this.
code :
private void OnCalculateCompleted(InvokeOperation response)
{
  if (response.HasError == false)
  {
    // Do stuff with result
  }
  else
  {
    MessageBox.Show(response.Error.Message);
    response.MarkErrorAsHandled();
  }
}
Silverlight- WCF RIA Services - DataForm + Overriding Add Operation

Silverlight- WCF RIA Services - DataForm + Overriding Add Operation


By : sagar k
Date : March 29 2020, 07:55 AM
To fix the issue you can do As it appears, the parematerless contructor is required for the Add button to get enabled.
A possible alternative of getting the dependencies injected would be to use property injection rather than constructor injection through a DI container. (Haven't tried it though, but I presume it would work. )
Silverlight + RIA Services: How to return from one invoke operation before another invoke operation completes?

Silverlight + RIA Services: How to return from one invoke operation before another invoke operation completes?


By : Christopher Kim
Date : March 29 2020, 07:55 AM
Any of those help You are probably seeing locking on the session state. Check here for instructions on how to turn off locking: http://blogs.microsoft.co.il/blogs/idof/archive/2010/09/27/asp-net-compatible-wcf-services-concurrency-problem.aspx
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