CommittableTransaction Constructor
Collapse the table of content
Expand the table of content

CommittableTransaction Constructor ()

 

Initializes a new instance of the CommittableTransaction class.

Namespace:   System.Transactions
Assembly:  System.Transactions (in System.Transactions.dll)

Public Sub New

Exception Condition
PlatformNotSupportedException

An attempt to create a transaction under Windows 98, Windows 98 Second Edition or Windows Millennium Edition.

The following sample creates a new instance of CommittableTransaction and commits it.

tx = New CommittableTransaction

Dim myConnection As New SqlConnection("server=(local)\SQLExpress;Integrated Security=SSPI;database=northwind")
Dim myCommand As New SqlCommand()

'Open the SQL connection
myConnection.Open()

'Give the transaction to SQL to enlist with
myConnection.EnlistTransaction(tx)

myCommand.Connection = myConnection

'Restore database to near it's original condition so sample will work correctly.
myCommand.CommandText = "DELETE FROM Region WHERE (RegionID = 100) OR (RegionID = 101)"
myCommand.ExecuteNonQuery()

'Insert the first record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (100, 'MidWestern')"
myCommand.ExecuteNonQuery()

'Insert the second record.
myCommand.CommandText = "Insert into Region (RegionID, RegionDescription) VALUES (101, 'MidEastern')"
myCommand.ExecuteNonQuery()

'Commit or rollback the transaction
Dim c As ConsoleKeyInfo
While (True)
    Console.Write("Commit or Rollback? [C|R] ")
    c = Console.ReadKey()
    Console.WriteLine()

    If (c.KeyChar = "C") Or (c.KeyChar = "c") Then
        tx.Commit()
        Exit While
    ElseIf ((c.KeyChar = "R") Or (c.KeyChar = "r")) Then
        tx.Rollback()
        Exit While
    End If
End While

myConnection.Close()
tx = Nothing

.NET Framework
Available since 2.0
Return to top
Show:
© 2016 Microsoft