OdbcTransaction Class

Definition

Represents an SQL transaction to be made at a data source. This class cannot be inherited.

public ref class OdbcTransaction sealed : System::Data::Common::DbTransaction
public ref class OdbcTransaction sealed : MarshalByRefObject, IDisposable, System::Data::IDbTransaction
public sealed class OdbcTransaction : System.Data.Common.DbTransaction
public sealed class OdbcTransaction : MarshalByRefObject, IDisposable, System.Data.IDbTransaction
type OdbcTransaction = class
    inherit DbTransaction
type OdbcTransaction = class
    inherit MarshalByRefObject
    interface IDbTransaction
    interface IDisposable
Public NotInheritable Class OdbcTransaction
Inherits DbTransaction
Public NotInheritable Class OdbcTransaction
Inherits MarshalByRefObject
Implements IDbTransaction, IDisposable
Inheritance
OdbcTransaction
Inheritance
Inheritance
OdbcTransaction

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

Remarks

The application creates an OdbcTransaction object by calling BeginTransaction on the OdbcConnection object. All subsequent operations associated with the transaction (for example, committing or aborting the transaction) are performed on the OdbcTransaction object.

Properties

Connection

Gets the OdbcConnection object associated with the transaction, or null if the transaction is no longer valid.

DbConnection

When overridden in a derived class, gets the DbConnection object associated with the transaction.

(Inherited from DbTransaction)
IsolationLevel

Specifies the IsolationLevel for this transaction.

Methods

Commit()

Commits the database transaction.

CommitAsync(CancellationToken)

Asynchronously commits the database transaction.

(Inherited from DbTransaction)
CreateObjRef(Type)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(Inherited from MarshalByRefObject)
Dispose()

Releases the unmanaged resources used by the DbTransaction.

(Inherited from DbTransaction)
Dispose(Boolean)

Releases the unmanaged resources used by the DbTransaction and optionally releases the managed resources.

(Inherited from DbTransaction)
DisposeAsync()

Asynchronously diposes the transaction object.

(Inherited from DbTransaction)
Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
InitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.

(Inherited from MarshalByRefObject)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
MemberwiseClone(Boolean)

Creates a shallow copy of the current MarshalByRefObject object.

(Inherited from MarshalByRefObject)
Rollback()

Rolls back a transaction from a pending state.

RollbackAsync(CancellationToken)

Asynchronously rolls back a transaction from a pending state.

(Inherited from DbTransaction)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

IDbTransaction.Connection

Gets the DbConnection object associated with the transaction, or a null reference if the transaction is no longer valid.

(Inherited from DbTransaction)
IDisposable.Dispose()

Releases the resources used by the current instance of the OdbcTransaction class.

Applies to

See also