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POWCF returning results from stored procedure
 

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    <p>I have been tasked with implementing a WCF service in VB.NET. This WCF service will be consumed by our own .NET Windows Forms application and provide data from a SQL Server database. The data will be displayed in a third party grid (Infragistics).</p> <p>Originally I was going to use ADO.NET and return a datatable or dataset from SQL within the WCF service but I have read too many articles encouraging me to stay away from returning datatables over the internet. I am not worried about the interoperability but I am worried about the size/speed of the process. This had lead me to start using linq to sql to return entities which I can pass over the internet (.dbml)</p> <p>The problem:</p> <p>A lot of our data comes from stored procedures, these stored procedures return result sets that are a mix-match of existing tables and therefore does not match any return type. I have imported a stored procedure that returns (Auto-generated Type) however when I try and return this type over the WCF service I get this error in the tracelog:</p> <blockquote> <p>Type System.Data.Linq.SqlClient.SqlProvider+SingleResult'1[benchmark_prd_colour_findResult] cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute. If the type is a collection, consider marking it with the CollectionDataContractAttribute. See the Microsoft .NET Framework documentation for other supported types.</p> </blockquote> <p>Please let me know what I need to be doing to be able to return the results of a stored procedure when the results don't match any particular existing table</p>
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