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OleDbConnection.BeginTransaction Method (IsolationLevel)

Starts a database transaction with the specified isolation level.

Namespace:  System.Data.OleDb
Assembly:  System.Data (in System.Data.dll)

public OleDbTransaction BeginTransaction(
	IsolationLevel isolationLevel
)

Parameters

isolationLevel
Type: System.Data.IsolationLevel
The isolation level under which the transaction should run.

Return Value

Type: System.Data.OleDb.OleDbTransaction
An object representing the new transaction.

ExceptionCondition
InvalidOperationException

Parallel transactions are not supported.

You must explicitly commit or roll back the transaction using the Commit or Rollback method. To make sure that the .NET Framework Data Provider for OLE DB transaction management model performs correctly, avoid using other transaction management models, such as those provided by the data source.

NoteNote

If you do not specify an isolation level, the default isolation level for the underlying provider is used. To specify an isolation level with the BeginTransaction method, use the overload that takes the isolationLevel parameter.

The following example creates an OleDbConnection and an OleDbTransaction. It also demonstrates how to use the BeginTransaction, a Commit, and Rollback methods.


public void ExecuteTransaction(string connectionString)
{
    using (OleDbConnection connection =
               new OleDbConnection(connectionString))
    {
        OleDbCommand command = new OleDbCommand();
        OleDbTransaction transaction = null;

        // Set the Connection to the new OleDbConnection.
        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.
    }
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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