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ObjectQuery.Context Property

Gets the object context associated with this object query.

Namespace:  System.Data.Objects
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public ObjectContext Context { get; }

Property Value

Type: System.Data.Objects.ObjectContext
The ObjectContext associated with this ObjectQuery<T> instance.

The context for the query includes the connection, cache, and metadata. For more information, see Object Services Overview (Entity Framework).

The connection property is mutable and must be set before a query can be executed. For more information, see Managing Connections in Object Services (Entity Framework).

The example in this topic is based on the Adventure Works Sales Model. The example gets the ObjectContext object associated with this ObjectQuery<T> object.

using (AdventureWorksEntities advWorksContext =
    new AdventureWorksEntities())
{
    try
    {
        string queryString =
            @"SELECT VALUE Contact FROM 
            AdventureWorksEntities.Contact AS Contact";

        ObjectQuery<Contact> contactQuery =
            new ObjectQuery<Contact>(queryString, 
                advWorksContext, MergeOption.NoTracking);

        // Get ObjectContext from ObjectQuery.
        ObjectContext objectContext = contactQuery.Context;
        Console.WriteLine("Connection string {0}", 
            objectContext.Connection.ConnectionString);
    }
    catch (EntitySqlException ex)
    {
        Console.WriteLine(ex.ToString());
    }
}

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.

.NET Framework

Supported in: 3.5 SP1

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