static async Task TransactionScopeAsync()
{
using (var scope = new TransactionScope())
{
Transaction.Current.TransactionCompleted += OnTransactionCompleted;
TransactionUtilities.DisplayTransactionInformation("Ambient TX created",
Transaction.Current.TransactionInformation);
var s1 = new Student
{
FirstName = "Angela",
LastName = "Nagel",
Company = "Kantine M101"
};
var db = new StudentData();
await db.AddStudentAsync(s1);
if (!TransactionUtilities.AbortTransaction())
{
scope.Complete();
}
else
{
Console.WriteLine("transaction will be aborted");
}
} // scope.Dispose()
}
static async Task CommittableTransactionAsync()
{
var tx = new CommittableTransaction();
TransactionUtilities.DisplayTransactionInformation("TX created",
tx.TransactionInformation);
try
{
var s1 = new Student
{
FirstName = "Stephanie",
LastName = "Nagel",
Company = "CN innovation"
};
var db = new StudentData();
await db.AddStudentAsync(s1, tx);
if (TransactionUtilities.AbortTransaction())
{
throw new ApplicationException("transaction abort");
}
tx.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine();
tx.Rollback();
}
TransactionUtilities.DisplayTransactionInformation("TX completed",
tx.TransactionInformation);
}
static void DependentTransaction()
{
var tx = new CommittableTransaction();
TransactionUtilities.DisplayTransactionInformation("Root TX created",
tx.TransactionInformation);
try
{
Task.Factory.StartNew(TxTask, tx.DependentClone(DependentCloneOption.BlockCommitUntilComplete));
if (TransactionUtilities.AbortTransaction())
{
throw new ApplicationException("transaction abort");
}
tx.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
tx.Rollback();
}
TransactionUtilities.DisplayTransactionInformation("TX finished",
tx.TransactionInformation);
}
static void TxTask(object obj)
{
var tx = obj as DependentTransaction;
if (tx == null)
{
return;
}
TransactionUtilities.DisplayTransactionInformation("Dependent Transaction",
tx.TransactionInformation);
Thread.Sleep(3000);
tx.Complete();
TransactionUtilities.DisplayTransactionInformation("Dependent TX Complete",
tx.TransactionInformation);
}
static void NestedScopes()
{
using (var scope = new TransactionScope())
{
Transaction.Current.TransactionCompleted += OnTransactionCompleted;
TransactionUtilities.DisplayTransactionInformation("Ambient TX created",
Transaction.Current.TransactionInformation);
using (var scope2 =
new TransactionScope(TransactionScopeOption.RequiresNew))
{
Transaction.Current.TransactionCompleted += OnTransactionCompleted;
TransactionUtilities.DisplayTransactionInformation(
"Inner Transaction Scope",
Transaction.Current.TransactionInformation);
scope2.Complete();
}
scope.Complete();
}
}
static void OnTransactionCompleted(object sender, TransactionEventArgs e)
{
TransactionUtilities.DisplayTransactionInformation("TX completed",
e.Transaction.TransactionInformation);
}
