Please follow below steps to enable transaction in Web Service :
1.Add a reference to System.EnterpriseServices.dll.
2.Add the System.EnterpriseServices namespace to the XML Web service
using System.EnterpriseServices;
3.Use the TransactionOption property of the WebMethod attribute, as shown below:
public class Service1 : System.Web.Services.WebService
{
[System.Web.Services.WebMethod(
TransactionOption=TransactionOption.RequiresNew)]
public string DoSomethingTransactional()
{
// The transaction was successful...
ContextUtil.SetComplete();
return ContextUtil.TransactionId.ToString();
}
}
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