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Use Isolation level in LINQ

Posted on 2009-05-05
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3,475 Views
Last Modified: 2013-11-11
I try to use isolation level with L2E, but I've this problem:

The transaction specified for TransactionScope has a different IsolationLevel than the value requested for the scope. Parameter name: transactionOptions.IsolationLevel

And I dont understand why.

This error is displayed when I call my dedicated method:
public static int insertDB(InsertDbDelegate methodThatWriteDB, IsolationLevel isoLevel, MasterPage senderPage)
    {
        int objectsAdded = 0;
 
        try
        {
            using (var scope = new TransactionScope(TransactionScopeOption.Required, new TransactionOptions() { IsolationLevel = isoLevel }))
            {
                using (geststockEntities gse = new geststockEntities(cs_admin))
                {
                    methodThatWriteDB(gse);
                    objectsAdded = gse.SaveChanges();
                    if (objectsAdded == 0) throw new Exception();
                    scope.Complete();
                    gse.Connection.Close();
                    addUserMessage(senderPage, "Insertion OK");
                }
            }
        }
        catch (Exception ex)
        {
            addErrorMessage(senderPage, "Error when connecting to the database." + ex.Message);
        }
 
        return objectsAdded;
    }

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Question by:Nargzul
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2 Comments
 
LVL 43

Expert Comment

by:Eugene Z
ID: 24325574
please post an error that you got

also check if it is related to your problem:

https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=325381&wa=wsignin1.0
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Accepted Solution

by:
Nargzul earned 0 total points
ID: 24326032
Interception de System.Data.EntityException
  Message="Échec du fournisseur sous-jacent sur Open."
  Source="System.Data.Entity"
  StackTrace:
       à System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure)
       à System.Data.EntityClient.EntityConnection.Open()
       à System.Data.Objects.ObjectContext.EnsureConnection()
       à System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption)
       à System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
       à System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
       à System.Data.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__0[TResult](IEnumerable`1 sequence)
       à System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot)
       à System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression)
       à System.Linq.Queryable.First[TSource](IQueryable`1 source)
       à pages_Default.makeLoan(geststockEntities gse) dans d:\WorkSpaces\geststock\GestStock2\pages\makeLoan.aspx.cs:ligne 169
       à QueryHelper.insertDB(InsertDbDelegate methodThatWriteDB, IsolationLevel isoLevel, MasterPage senderPage) dans d:\WorkSpaces\geststock\GestStock2\App_Code\QueryHelper.cs:ligne 157
  InnerException: System.Transactions.TransactionManagerCommunicationException
       Message="L'accès réseau de MSDTC (Distributed Transaction Manager) a été désactivé. Activez DTC pour l'accès réseau dans la configuration de sécurité de MSDTC à l'aide de l'outil administratif des services de composants."
       Source="System.Transactions"
       StackTrace:
            à System.Transactions.Oletx.OletxTransactionManager.ProxyException(COMException comException)
            à System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)
            à System.Transactions.TransactionStatePSPEOperation.PSPEPromote(InternalTransaction tx)
            à System.Transactions.TransactionStateDelegatedBase.EnterState(InternalTransaction tx)
            à System.Transactions.EnlistableStates.Promote(InternalTransaction tx)
            à System.Transactions.Transaction.Promote()
            à System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction)
            à System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts)
            à System.Data.SqlClient.SqlInternalConnection.GetTransactionCookie(Transaction transaction, Byte[] whereAbouts)
            à System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx)
            à System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction tx)
            à System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction)
            à System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction)
            à System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
            à System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
            à System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
            à System.Data.SqlClient.SqlConnection.Open()
            à System.Data.EntityClient.EntityConnection.OpenStoreConnectionIf(Boolean openCondition, DbConnection storeConnectionToOpen, DbConnection originalConnection, String exceptionCode, String attemptedOperation, Boolean& closeStoreConnectionOnFailure)
       InnerException: System.Runtime.InteropServices.COMException
            Message="Le gestionnaire de transactions a désactivé sa prise en charge de transactions à distance/réseau. (Exception de HRESULT : 0x8004D024)"
            Source="System.Transactions"
            ErrorCode=-2147168220
            StackTrace:
                 à System.Transactions.Oletx.IDtcProxyShimFactory.ReceiveTransaction(UInt32 propgationTokenSize, Byte[] propgationToken, IntPtr managedIdentifier, Guid& transactionIdentifier, OletxTransactionIsolationLevel& isolationLevel, ITransactionShim& transactionShim)
                 à System.Transactions.TransactionInterop.GetOletxTransactionFromTransmitterPropigationToken(Byte[] propagationToken)
            InnerException:
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