ObjectQuery.Context Property

Definition

Namespace:

System.Data.Objects

Assembly:

System.Data.Entity.dll

Gets the object context associated with this object query.

public:
 property System::Data::Objects::ObjectContext ^ Context { System::Data::Objects::ObjectContext ^ get(); };

public System.Data.Objects.ObjectContext Context { get; }

member this.Context : System.Data.Objects.ObjectContext

Public ReadOnly Property Context As ObjectContext

Property Value

ObjectContext

The ObjectContext associated with this ObjectQuery<T> instance.

Examples

This example gets the ObjectContext object associated with this ObjectQuery<T> object.

using (AdventureWorksEntities context =
    new AdventureWorksEntities())
{
    string queryString =
        @"SELECT VALUE contact FROM
        AdventureWorksEntities.Contacts AS contact";

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

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

Remarks

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).

See also

• Querying Data as Objects and Shaping Results (Entity Framework)