CODEWITHSUNDEEP
c#wcftransactions
3logy
3logy

Reputation: 2712

Transaction on the Client Side

i have a big problem to use or understand the use of transaction with wsdualhttpbinding WCF.

i have something like this :

IService :

[ServiceContract]
public interface IService
{
  //...
  [OperationContract]
  [ApplyDataContractResolver]
  [TransactionFlow(TransactionFlowOption.Mandatory)] 
  bool SaveDevice(Device device);
  //...
}

Service.svc.cs :

[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
  public class Service : IService
  {
   [OperationBehavior(TransactionScopeRequired = true)]
   public bool SaveDevice(Device device)
   {
            bool temp = false;
            Transaction transaction = Transaction.Current;

            using (EntityConn context = new EntityConn())
            {
                try
                {
                  //....
                }
             }
    }
   }

Model.cs So here im in my Client an try to execute an Operation with Transaction requirements :

if (Transaction.Current.TransactionInformation.DistributedIdentifier == Guid.Empty)
        {
            using (var scope = new TransactionScope(TransactionScopeOption.Suppress))
            {
                try
                {
                   //do some stuff
                }
            }
          }

Well im getting an Error : Transaction.Current is empty

  1. Do i on the right way?
  2. When not how can i solve it?

Thank u for helping

EDIT : I just needed to place the if after the using

    using (var scope = new TransactionScope(TransactionScopeOption.Suppress))
    {
     if (Transaction.Current.TransactionInformation.DistributedIdentifier == Guid.Empty)
     {
            try
            {
               //do some stuff
            }
     }
    }

Upvotes: 0

Views: 971

Answers (2)

Kimberly
Kimberly

Reputation: 2697

Outside of a TransactionScope, I think Transaction.Current will always be null. You need to enter the transaction scope first, then start accessing properties of Transaction.Current. It looks like you are trying to execute some non-transactional operation at the client? If so, try this:

using (TransactionScope tran = new TransactionScope())
{
    if (Transaction.Current.TransactionInformation.DistributedIdentifier == Guid.Empty)
    {
        // ambient transaction is not escalated; exclude this operation from the ambient transaction
        using (TransactionScope tran2 = new TransactionScope(TransactionScopeOption.Suppress))
        {
            // do some stuff
        }
    }
    else
    {
        // ambient transaction is escalated
        // do some other stuff
    }
}

Note: I've copied the condition as you have it in your example code, but you should verify that this is the right test. According to MSDN, TransactionInformation.DistributedIdentifier is null, not Guid.Empty, outside of a distributed transaction.

Upvotes: 1

Chris Shain
Chris Shain

Reputation: 51329

I think you want to add AutoEnlistTransaction=true on your OperationBehavior attribute. Likewise, you may want to add AutoCompleteTransaction=true.

Upvotes: 0

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