static async Task CommittableTransactionAsync()
{
var tx = new CommittableTransaction();
Utilities.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 (Utilities.AbortTx())
{
throw new ApplicationException("transaction abort");
}
tx.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine();
tx.Rollback();
}
Utilities.DisplayTransactionInformation("TX completed",
tx.TransactionInformation);
}
static async Task TransactionScopeAsync()
{
using (var scope = new TransactionScope())
{
Transaction.Current.TransactionCompleted += OnTransactionCompleted;
Utilities.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 (!Utilities.AbortTx())
{
scope.Complete();
}
else
{
Console.WriteLine("transaction will be aborted");
}
} // scope.Dispose()
}
static async Task TransactionPromotionAsync()
{
var tx = new CommittableTransaction();
TransactionUtilities.DisplayTransactionInformation("TX created",
tx.TransactionInformation);
try
{
var s1 = new Student
{
FirstName = "Matthias",
LastName = "Nagel",
Company = "CN innovation"
};
var db = new StudentData();
await db.AddStudentAsync(s1, tx);
var s2 = new Student
{
FirstName = "Stephanie",
LastName = "Nagel",
Company = "CN innovation"
};
await db.AddStudentAsync(s2, tx);
TransactionUtilities.DisplayTransactionInformation("2nd connection enlisted",
tx.TransactionInformation);
if (TransactionUtilities.AbortTransaction())
{
throw new ApplicationException("transaction abort");
}
tx.Commit();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine();
tx.Rollback();
}
TransactionUtilities.DisplayTransactionInformation("TX finished",
tx.TransactionInformation);
}