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Silverlight, RIA services

Posted on 2010-09-09
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Last Modified: 2013-11-12
Hi,

I have a Silverlight application and want to use RIA services to retrieve some data from the login account. I have added the following method to the AuthenticationDomainService class:

        public string[] getRoles()
        {
            string usr = Membership.GetUser().UserName;
            string[] rol = Roles.GetRolesForUser(usr);
            return rol;
        }

which however gives the build error

Type 'String' is not a valid entity type.  Entity types cannot be a primitive type or a simple type like string or Guid.

How can I correct this?
Is there a better way to work with the user data from Silverlight?

Best regards
RTSol
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Question by:RTSol
2 Comments
 
LVL 29

Accepted Solution

by:
Gautham Janardhan earned 1500 total points
ID: 33646451
can you post the RIA service code. it look like you are trying to add a domain Operation , which needs an entity as a return type.
PLease put the attribute [ServiceOperation] on your method and it should work.
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Author Closing Comment

by:RTSol
ID: 33652464
Hi,

Thanks for the tip. It found that the attribute [ServiceOperation] has been replaced by [Invoke]. My code now looks like this:

        [Invoke]
        public string[] getRoles()
        {
            string usr = Membership.GetUser().UserName;
            string[] rol = Roles.GetRolesForUser(usr);
            return rol;
        }

and it works fine.

Best regards
RTSol
0

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