OdbcTransaction.Commit Method
Definition
Important
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Commits the database transaction.
public:
override void Commit();
public:
virtual void Commit();
public override void Commit ();
public void Commit ();
override this.Commit : unit -> unit
abstract member Commit : unit -> unit
override this.Commit : unit -> unit
Public Overrides Sub Commit ()
Public Sub Commit ()
Implements
Exceptions
An error occurred while trying to commit the transaction.
The transaction has already been committed or rolled back.
-or-
The connection is broken.
Examples
The following example creates an OdbcConnection and an OdbcTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods.
public static void ExecuteTransaction(string connectionString)
{
using (OdbcConnection connection =
new OdbcConnection(connectionString))
{
OdbcCommand command = new OdbcCommand();
OdbcTransaction transaction = null;
// Set the Connection to the new OdbcConnection.
command.Connection = connection;
// Open the connection and execute the transaction.
try
{
connection.Open();
// Start a local transaction
transaction = connection.BeginTransaction();
// Assign transaction object for a pending local transaction.
command.Connection = connection;
command.Transaction = transaction;
// Execute the commands.
command.CommandText =
"Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
command.ExecuteNonQuery();
command.CommandText =
"Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
command.ExecuteNonQuery();
// Commit the transaction.
transaction.Commit();
Console.WriteLine("Both records are written to database.");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
try
{
// Attempt to roll back the transaction.
transaction.Rollback();
}
catch
{
// Do nothing here; transaction is not active.
}
}
// The connection is automatically closed when the
// code exits the using block.
}
Public Sub ExecuteTransaction(ByVal connectionString As String)
Using connection As New OdbcConnection(connectionString)
Dim command As New OdbcCommand()
Dim transaction As OdbcTransaction
' Set the Connection to the new OdbcConnection.
command.Connection = connection
' Open the connection and execute the transaction.
Try
connection.Open()
' Start a local transaction.
transaction = connection.BeginTransaction()
' Assign transaction object for a pending local transaction.
command.Connection = connection
command.Transaction = transaction
' Execute the commands.
command.CommandText = _
"Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')"
command.ExecuteNonQuery()
command.CommandText = _
"Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')"
command.ExecuteNonQuery()
' Commit the transaction.
transaction.Commit()
Console.WriteLine("Both records are written to database.")
Catch ex As Exception
Console.WriteLine(ex.Message)
' Try to rollback the transaction
Try
transaction.Rollback()
Catch
' Do nothing here; transaction is not active.
End Try
End Try
' The connection is automatically closed when the
' code exits the Using block.
End Using
End Sub
Applies to
See also
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