Entity Framework: Using transactions and rollbacks… Possible?

Question

Issue: (With Sql 2005)

• How can I query the database while the transaction is up? (Since it locks the table)
• How can cause a t

Answer 1

I have been able to solve very similar problem using this code fragment:

var connection = new EntityConnection("name=MyEntities");
connection.Open();
var tran = connection.BeginTransaction(System.Data.IsolationLevel.ReadUncommitted);

try
{
    var dataContext = new MyEntities(connection);

    //CRUD operation1

    //CRUD operation2

    //CRUD operation3 ...

    Assert.AreEqual(expected, actual);
}
catch
{
    throw;
}
finally
{
    tran.Rollback();
    connection.Close();
}

Where MyEntities is the EF DataModel. The crucial part is the setting of the transaction: System.Data.IsolationLevel.ReadUncommitted.
Using this isolation level SQL queries can read you changes done inside the transaction. Also you need to explicitly create a connection as I do on the first and second line. I couldn't make it work using TransactionScope unfortunately.