Non-Scalar Query in Dapper requires access to DbTransaction

[gentoorax]

Attempting to perform a non-scalar query with Dapper in a transaction requires access to the transaction.

public IEnumerable<TestEntity> GetEntities()
{
    const string query = "SELECT * FROM TestEntity";
    return SqlConnection3.Query<TestEntity>(query);
}

The above will throw...

System.InvalidOperationException: ExecuteReader requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.  The Transaction property of the command has not been initialized.

Modify the AdoContext to allow access to the transaction as required.