Combines the results of the query with the results of another object query, without any duplicates.
Assembly: System.Data.Entity (in System.Data.Entity.dll)
The query parameter is a null reference (Nothing in Visual Basic).
adds the results of the supplied query without any duplicates.
The supplied query that defines the results to add must be of the same type or of a type that can be promoted to the type of this ObjectQuery(T). For example, the following is valid because DiscontinuedProducts can be promoted to Products:
The following will throw an exception because Products cannot be promoted to DiscontinuedProducts.
For an ObjectQuery(T) of type DbDataRecord, the records in both queries must have the same number of columns, and the types in the columns of the DbDataRecord of the passed query must be promotable to the types of the columns in the DbDataRecord of the ObjectQuery(T).
Parameters that are defined in the supplied query are merged with parameters that are defined in the ObjectQuery(T) instance. Parameters must be unique in the combined ObjectParameterCollection. There cannot be two parameters in the combined collection with the same name. For more information, see Query Builder Methods (Entity Framework).
The resulting query inherits the connection from the ObjectQuery(T) instance on which was called.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.