InvalidOperationException due to using more than one datamodel in the query
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I am using Telerik open Access,I have three data models and For the three data models I have three different Context Modules.In my query I want to retrieve the data using joining of different tables in different data models.I wrote the query but it is throwing InvalidOperationException Unhandled By user code.can u tell me how to retrieve the data if we have different datamodels in the project.  