.NET Framework Class Library
IDbTransaction Interface

Represents a transaction to be performed at a data source, and is implemented by .NET Framework data providers that access relational databases.

Namespace:   System.Data
Assembly:  System.Data (in System.Data.dll)
Syntax
Public Interface IDbTransaction _
	Inherits [%$TOPIC/yas366ac_en-us_VS_110_1_0_0_0_0%]
public interface IDbTransaction : [%$TOPIC/yas366ac_en-us_VS_110_1_0_1_0_0%]
public interface class IDbTransaction : [%$TOPIC/yas366ac_en-us_VS_110_1_0_2_0_0%]
type IDbTransaction =  
    interface 
        interface [%$TOPIC/yas366ac_en-us_VS_110_1_0_3_0_0%] 
    end

The IDbTransaction type exposes the following members.

Properties
  NameDescription
Public property Supported by the XNA Framework ConnectionSpecifies the Connection object to associate with the transaction.
Public property Supported by the XNA Framework IsolationLevelSpecifies the IsolationLevel for this transaction.
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Methods
  NameDescription
Public method Supported by the XNA Framework CommitCommits the database transaction.
Public method Supported by the XNA Framework DisposePerforms application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from IDisposable.)
Public method Supported by the XNA Framework RollbackRolls back a transaction from a pending state.
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Remarks

The IDbTransaction interface allows an inheriting class to implement a Transaction class, which represents the transaction to be performed at a data source. For more information about Transaction classes, see Transactions and Concurrency.

An application does not create an instance of the IDbTransaction interface directly, but creates an instance of a class that inherits IDbTransaction.

Classes that inherit IDbTransaction must implement the inherited members, and typically define additional members to add provider-specific functionality. For example, the IDbTransaction interface defines the Commit method. In turn, the OleDbTransaction class inherits this property, and also defines the Begin method.

Notes to Implementers

To promote consistency among .NET Framework data providers, name the inheriting class in the form Prv Transaction where Prv is the uniform prefix given to all classes in a specific .NET Framework data provider namespace. For example, Sql is the prefix of the SqlTransaction class in the System.Data.SqlClient namespace.

Examples

The following example creates instances of the derived classes, SqlConnection and SqlTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods.

Private Sub ExecuteSqlTransaction(ByVal connectionString As String)
    Using connection As New SqlConnection(connectionString)
        connection.Open()

        Dim command As SqlCommand = connection.CreateCommand()
        Dim transaction As SqlTransaction

        ' Start a local transaction
        transaction = connection.BeginTransaction("SampleTransaction")

        ' Must assign both transaction object and connection 
        ' to Command object for a pending local transaction.
        command.Connection = connection
        command.Transaction = transaction

        Try
            command.CommandText = _
              "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')"
            command.ExecuteNonQuery()
            command.CommandText = _
              "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')"

            command.ExecuteNonQuery()

            ' Attempt to commit the transaction.
            transaction.Commit()
            Console.WriteLine("Both records are written to database.")

        Catch ex As Exception
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType())
            Console.WriteLine("  Message: {0}", ex.Message)

            ' Attempt to roll back the transaction. 
            Try
                transaction.Rollback()

            Catch ex2 As Exception
                ' This catch block will handle any errors that may have occurred 
                ' on the server that would cause the rollback to fail, such as 
                ' a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType())
                Console.WriteLine("  Message: {0}", ex2.Message)
            End Try 
        End Try 
    End Using 
End Sub
private static void ExecuteSqlTransaction(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        connection.Open();

        SqlCommand command = connection.CreateCommand();
        SqlTransaction transaction;

        // Start a local transaction.
        transaction = connection.BeginTransaction("SampleTransaction");

        // Must assign both transaction object and connection 
        // to Command object for a pending local transaction
        command.Connection = connection;
        command.Transaction = transaction;

        try
        {
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();

            // Attempt to commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);

            // Attempt to roll back the transaction. 
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                // This catch block will handle any errors that may have occurred 
                // on the server that would cause the rollback to fail, such as 
                // a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
            }
        }
    }
}
Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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