EntityConnection.BeginTransaction Method (IsolationLevel)

 

Begins a transaction with the specified isolation level by using the underlying provider.

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

public EntityTransaction BeginTransaction(
	IsolationLevel isolationLevel
)

Parameters

isolationLevel
Type: System.Data.IsolationLevel

The isolation level of the transaction.

Return Value

Type: System.Data.EntityClient.EntityTransaction

A new EntityTransaction. The returned EntityTransaction instance can later be associated with the EntityCommand to execute the command under that transaction.

Exception Condition
InvalidOperationException

The underlying provider is not known.

-or-

The call to BeginTransaction was made on an EntityConnection that already has a current transaction.

-or-

The state of the EntityConnection is not Open.

At any particular moment there can be no more than one active transaction that was created through BeginTransaction. An attempt to call any of the BeginTransaction overloads on an EntityConnection that already has a current transaction results in an InvalidOperationException.

.NET Framework
Available since 3.5
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