Commit Method (SQLiteTransaction)

In This Topic

Commits the database transaction.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides Sub Commit()

public override void Commit()

Remarks

The Commit method is equivalent to the SQL COMMIT statement.

Example

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

csharp

public void RunSQLiteTransaction(string myConnString)
{
  SQLiteConnection sqConnection = new SQLiteConnection(myConnString);
  sqConnection.Open();

  SQLiteCommand sqCommand = new SQLiteCommand();
  SQLiteTransaction myTrans;

  // Start a local transaction
  myTrans = sqConnection.BeginTransaction();
  // Assign transaction object for a pending local transaction
  sqCommand.Transaction = myTrans;

  try
  {
    sqCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')";
    sqCommand.ExecuteNonQuery();
    sqCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(60, 'PRODUCTION')";
    sqCommand.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
  {
    sqConnection.Close();
  }
}

Visual Basic

Public Sub RunSQLiteTransaction(myConnString As String)
  Dim sqConnection As New SQLiteConnection(myConnString)
  sqConnection.Open()

  Dim sqCommand As New SQLiteCommand()
  Dim myTrans As SQLiteTransaction

  ' Start a local transaction
  myTrans = sqConnection.BeginTransaction()
  ' Assign transaction object for a pending local transaction
  sqCommand.Transaction = myTrans

  Try
    sqCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(50, 'DEVELOPMENT')"
    sqCommand.ExecuteNonQuery()
    sqCommand.CommandText = "INSERT INTO Dept(DeptNo, DName) Values(60, 'PRODUCTION')"
    sqCommand.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
    sqConnection.Close()
  End Try
End Sub

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

SQLiteTransaction Class
SQLiteTransaction Members
BeginTransaction Method
Rollback Method

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