[Solved] Do somebody use Entity Framework as OR Mapper in behind

[mladen]

Hi,
is there somebody using the grid with Entity Framework?

Because of the POCO Adapter (or Proxy/ Change Tracking) the LINQ Statements do not work. For example, using the filter in the grid will throw

[InvalidOperationException: Der binäre Operator NotEqual ist für die Typen "Data.Domain.PocoAdapters.LogAdapter" und "Data.Domain.Log" nicht definiert.]
   System.Linq.Expressions.Expression.GetEqualityComparisonOperator(ExpressionType binaryType, String opName, Expression left, Expression right, Boolean liftToNull) +754383
   System.Linq.Expressions.Expression.NotEqual(Expression left, Expression right, Boolean liftToNull, MethodInfo method) +53
   System.Linq.Expressions.Expression.MakeBinary(ExpressionType binaryType, Expression left, Expression right, Boolean liftToNull, MethodInfo method, LambdaExpression conversion) +239
   System.Linq.Expressions.Expression.MakeBinary(ExpressionType binaryType, Expression left, Expression right, Boolean liftToNull, MethodInfo method) +20
   EFPocoAdapter.Internal.ExpressionVisitor.VisitBinary(BinaryExpression b) +386

Do anybody have some tips or workarounds?

Thx
Mladen

[Atanas Korchev]

Hello Mladen Miljic,

I have attached a working page showing binding to Entity Framework. What is different in your case? Which version are you using? Can you make this example break in some way so we can reproduce the problem locally?

Regards,
Atanas Korchev
the Telerik team

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[mladen]

Hi Atanas,

thx for the fast response. I will prepare an example which I can give you (my current one is too big).

Kind Regards,
Mladen

[Atanas Korchev]

Hello Mladen Miljic,

You can send it to atanas.korchev at telerik.com.

Best wishes,
Atanas Korchev
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

[mladen]

Hi,

this happens when using POCO adapter. I am not able to reproduce that with EF 1.0 (wthout POCOs) or EF 4.0.

Thanks for you help.

Kind regards,
Mladen