SqlTransaction Class

In This Topic

Represents a SQL transaction to be made in the SQL Server database.

Syntax

Visual Basic
C#

'Declaration
 
Public Class SqlTransaction 
   Inherits Devart.Common.DbTransactionBase
   Implements System.Data.IDbTransaction, System.IDisposable

public class SqlTransaction : Devart.Common.DbTransactionBase, System.Data.IDbTransaction, System.IDisposable

Remarks

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

Example

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

csharp

public static void RunSqlTransaction(string myConnString) {
        using (SqlConnection myConnection = new SqlConnection(myConnString)) {
                myConnection.Open();
                // Start a local transaction
                SqlTransaction myTrans = myConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted);
                SqlCommand myCommand = myConnection.CreateCommand();
                try {
                        myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(52, 'DEVELOPMENT')";
                        myCommand.ExecuteNonQuery();
                        myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(62, 'PRODUCTION')";
                        myCommand.ExecuteNonQuery();
                        myTrans.Commit();
                        Console.WriteLine("Both records are written to database.");
                }
                catch (Exception e) {
                        myTrans.Rollback();
                        Console.WriteLine(e.ToString());
                        Console.WriteLine("Neither record was written to database.");
                }
                finally {
                        myCommand.Dispose();
                        myTrans.Dispose();
                }
    }
}

Visual Basic

Public Shared Sub RunSqlTransaction(myConnString As String)
        Using myConnection As New SqlConnection(myConnString)
                myConnection.Open()
                ' Start a local transaction
                Dim myTrans As SqlTransaction = myConnection.BeginTransaction(System.Data.IsolationLevel.ReadCommitted)
                Dim myCommand As SqlCommand = myConnection.CreateCommand()
                Try
                        myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(52, 'DEVELOPMENT')"
                        myCommand.ExecuteNonQuery()
                        myCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(62, 'PRODUCTION')"
                        myCommand.ExecuteNonQuery()
                        myTrans.Commit()
                        Console.WriteLine("Both records are written to database.")
                Catch e As Exception
                        myTrans.Rollback()
                        Console.WriteLine(e.ToString())
                        Console.WriteLine("Neither record was written to database.")
                Finally
                        myCommand.Dispose()
                        myTrans.Dispose()
                End Try
    End Using
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      System.Data.Common.DbTransaction
         Devart.Common.DbTransactionBase
            Devart.Data.SqlServer.SqlTransaction

Requirements

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

Reference

SqlTransaction Members
Devart.Data.SqlServer Namespace
SqlDataReader Class
SqlConnection Class

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