SqlTransaction Class
Represents a Transact-SQL transaction to be made in a SQL Server database. This class cannot be inherited.
Assembly: System.Data (in System.Data.dll)
System.MarshalByRefObject
System.Data.Common.DbTransaction
System.Data.SqlClient.SqlTransaction
| Name | Description | |
|---|---|---|
![]() | Connection | Gets the SqlConnection object associated with the transaction, or null if the transaction is no longer valid. |
![]() | IsolationLevel | Specifies the IsolationLevel for this transaction.(Overrides DbTransaction.IsolationLevel.) |
| Name | Description | |
|---|---|---|
![]() | Commit() | Commits the database transaction.(Overrides DbTransaction.Commit().) |
![]() | 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.) |
![]() | 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() | |
![]() | InitializeLifetimeService() | Obtains a lifetime service object to control the lifetime policy for this instance.(Inherited from MarshalByRefObject.) |
![]() | Rollback() | Rolls back a transaction from a pending state.(Overrides DbTransaction.Rollback().) |
![]() | Rollback(String) | Rolls back a transaction from a pending state, and specifies the transaction or savepoint name. |
![]() | Save(String) | Creates a savepoint in the transaction that can be used to roll back a part of the transaction, and specifies the savepoint name. |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IDbTransaction.Connection | Gets the DbConnection object associated with the transaction, or a null reference if the transaction is no longer valid.(Inherited from DbTransaction.) |
The application creates a SqlTransaction object by calling 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.
Note |
|---|
Try/Catch exception handling should always be used when committing or rolling back a SqlTransaction. Both Commit and Rollback generate an InvalidOperationException if the connection is terminated or if the transaction has already been rolled back on the server. |
For more information on SQL Server transactions, see Explicit Transactions and Coding Efficient Transactions.
The following example creates a SqlConnection and a SqlTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods. The transaction is rolled back on any error, or if it is disposed without first being committed. Try/Catch error handling is used to handle any errors when attempting to commit or roll back the transaction.
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
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.




