Click here to Skip to main content
15,395,950 members
Articles / Web Development / ASP.NET
Posted 6 Aug 2009


125 bookmarked

6 Steps to Enable Transactions in WCF

Rate me:
Please Sign up or sign in to vote.
4.74/5 (49 votes)
23 Jun 2021CPOL3 min read
6 steps to enable transactions in WCF

Table of Contents

Introduction and Goal

In this article, we will try to understand how we can implement transactions in WCF service. So we will create two WCF services which do database transactions and then unite them in one transaction. We will first understand the 6 important steps to enable transactions in WCF services. At the end of the article, we will try to force an error and see how the transaction is rolled back after the error.

Step 1: Create Two WCF Services

The first step is to create two WCF service projects which will participate in one transaction. In both of these WCF services, we will do database transactions and we will try to understand how a WCF transaction unifies them. We have also created a web application with name WCFTransactions which will consume both the services in one transaction scope.

Image 1

Step 2: Attribute Interface Methods with TransactionFlow

In both the WCF services, we will create a method called UpdateData which will insert into the database. So the first thing is to create the interface class with ServiceContract attribute and the method UpdateData with OperationContract attribute. In order to enable transaction in UpdateData method, we need to attribute it with TransactionFlow and we have specified that transactions are allowed for this method using TransactionFlowOption.Allowed enum.

public interface IService1
void UpdateData();

Step 3: Attribute the Implementation with TransactionScopeRequired

The 3rd step is to attribute the implementation of the WCF services with TransactionScopeRequired as true. Below is the code snippet which has a simple database inserting function, i.e. UpdateData which is attributed by TransactionScopeRequired attribute.

[OperationBehavior(TransactionScopeRequired = true)]
public void UpdateData()
SqlConnection objConnection = new SqlConnection(strConnection);
SqlCommand objCommand = new SqlCommand("insert into Customer
	(CustomerName,CustomerCode) values('sss','sss')",objConnection);

Step 4: Enable Transaction Flow using WCF Service Config File

We also need to enable transactions for wsHttpBinding by setting the transactionFlow attribute to true.

<binding name="TransactionalBind" transactionFlow="true"/>

The transaction enabled binding we need to attach with the end point through which our WCF service is exposed.

<endpoint address="" binding="wsHttpBinding" 
	bindingConfiguration="TransactionalBind" contract="WcfService1.IService1">

Step 5: Call the 2 Services in One Transaction

Now that we are done with enabling our server side transaction, it’s time to call the above 2 services in 1 transaction. We need to use the TransactionScope object to group the above 2 WCF services in one transaction. To commit all the WCF transactions, we call the Complete method of the Transactionscope object. To rollback, we need to call the Dispose method.

using (TransactionScope ts = new TransactionScope(TransactionScopeOption.RequiresNew))

// Call your webservice transactions here
catch (Exception ex)

Below is the complete code snippet in which we have grouped both the WCF transactions in one scope as shown below:

using (TransactionScope ts = new TransactionScope(TransactionScopeOption.RequiresNew))
ServiceReference1.Service1Client obj = new ServiceReference1.Service1Client();
ServiceReference2.Service1Client obj1 = new ServiceReference2.Service1Client();
catch (Exception ex)

Step 6: Test If Your Transaction Works

It’s time to test if the transactions really work. We are calling two services, both of which are doing an insert. After the first WCF service call, we are forcing an exception. In other words, the data insert of the first WCF service should revert back. If you check the database records, you will see no records are inserted by the WCF service.

Click to enlarge


  • 6th August, 2009: Initial post
  • Can I update this article? It's not mine!

For further reading do watch the below interview preparation videos and step by step video series.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Comments and Discussions

PraiseGood Job Pin
rishimuni16-Nov-15 18:03
Memberrishimuni16-Nov-15 18:03 
Questiontransaction in basichttpbinding Pin
Afazal MD 310420921-Oct-14 3:33
professionalAfazal MD 310420921-Oct-14 3:33 
QuestionWCF Transactions Pin
avinash00118-Aug-14 2:22
Memberavinash00118-Aug-14 2:22 
Questionunable to run the code Pin
Member 1096843025-Jul-14 21:24
MemberMember 1096843025-Jul-14 21:24 
GeneralMy vote of 3 Pin
Balaji 3526-Nov-13 22:05
professionalBalaji 3526-Nov-13 22:05 
QuestionTransaction flow between 2 WCF services Pin
Jason Henderson21-Oct-13 5:09
MemberJason Henderson21-Oct-13 5:09 
AnswerRe: Transaction flow between 2 WCF services Pin
Member 436622026-Nov-13 7:48
MemberMember 436622026-Nov-13 7:48 
GeneralRe: Transaction flow between 2 WCF services Pin
Jason Henderson26-Nov-13 9:14
MemberJason Henderson26-Nov-13 9:14 
GeneralMy vote of 4 Pin
Senthilkumar Rajagopal10-Oct-13 6:56
MemberSenthilkumar Rajagopal10-Oct-13 6:56 
GeneralMy vote of 5 Pin
Manuele Camilletti5-Jun-13 0:35
professionalManuele Camilletti5-Jun-13 0:35 
GeneralMy vote of 5 Pin
Rahul.KumarSharma18-Dec-12 19:09
MemberRahul.KumarSharma18-Dec-12 19:09 
GeneralMy vote of 4 Pin
sameer@accenture12-Jun-12 0:21
Membersameer@accenture12-Jun-12 0:21 
GeneralMy vote of 5 Pin
Siddheshwar Duchal from Pune14-May-12 21:11
MemberSiddheshwar Duchal from Pune14-May-12 21:11 
GeneralMy vote of 5 Pin
Ashok Mandial29-Sep-11 19:58
MemberAshok Mandial29-Sep-11 19:58 
Questionts.Dispose(); PinPopular
Maxim Novak6-Mar-11 1:27
MemberMaxim Novak6-Mar-11 1:27 
GeneralMy vote of 4 Pin
After205014-Dec-10 22:23
MemberAfter205014-Dec-10 22:23 
GeneralCan't rollback transaction Pin
tiennl_hsd15-Sep-09 23:19
Membertiennl_hsd15-Sep-09 23:19 
GeneralRe: Can't rollback transaction Pin
Shivprasad koirala15-Sep-09 23:22
MemberShivprasad koirala15-Sep-09 23:22 
GeneralRe: Can't rollback transaction Pin
mmccgg17-Sep-09 23:37
Membermmccgg17-Sep-09 23:37 
GeneralRe: Can't rollback transaction Pin
Abhijeet Yadav2-Nov-09 19:20
MemberAbhijeet Yadav2-Nov-09 19:20 
GeneralRe: Can't rollback transaction Pin
kmanikandan.2010@gmail.com28-Dec-09 21:14
Memberkmanikandan.2010@gmail.com28-Dec-09 21:14 
GeneralRe: Can't rollback transaction Pin
kmanikandan.2010@gmail.com28-Dec-09 22:12
Memberkmanikandan.2010@gmail.com28-Dec-09 22:12 
GeneralRe: Can't rollback transaction Pin
Kent K7-Jun-11 15:06
professionalKent K7-Jun-11 15:06 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.