How to: Bracket Data Submissions by Using Transactions (LINQ to SQL)
You can use TransactionScope to bracket your submissions to the database. For more information, see Transactions (LINQ to SQL).
Example
The following code encloses the database submission in a TransactionScope.
Dim db As New Northwnd("c:\northwnd.mdf")
Using ts = New TransactionScope()
Try
Dim prod1 = db.Products.First(Function(p) p.ProductID = 4)
Dim prod2 = db.Products.First(Function(p) p.ProductID = 5)
prod1.UnitsInStock -= 3
prod2.UnitsInStock -= 5
db.SubmitChanges()
Catch e As Exception
Console.WriteLine(e.Message)
End Try
End Using
Northwnd db = new Northwnd(@"c:\northwnd.mdf");
using (TransactionScope ts = new TransactionScope())
{
try
{
Product prod1 = db.Products.First(p => p.ProductID == 4);
Product prod2 = db.Products.First(p => p.ProductID == 5);
prod1.UnitsInStock -= 3;
prod2.UnitsInStock -= 5;
db.SubmitChanges();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
See Also
Concepts
Downloading Sample Databases (LINQ to SQL)