OdbcTransaction 类

定义

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

继承

Object

MarshalByRefObject

DbTransaction

OdbcTransaction

继承

Object

MarshalByRefObject

OdbcTransaction

实现

IDbTransaction IDisposable

示例

以下示例创建一个 OdbcConnection 和一个 OdbcTransaction。 它还演示如何使用 BeginTransaction、Commit和 Rollback 方法。

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

注解

应用程序通过在 OdbcConnection 对象上调用 BeginTransaction 来创建 OdbcTransaction 对象。 与事务关联的所有后续操作（例如，提交或中止事务）在 OdbcTransaction 对象上执行。

属性

方法

显式接口实现

扩展方法

适用于

另请参阅

• OdbcDataAdapter
• OdbcConnection
• 执行事务