Rollback Method (SQLiteConnection)

In This Topic

Rolls back a transaction from a pending state.

Syntax

Visual Basic
C#

'Declaration
 
Public Sub Rollback()

public void Rollback()

Example

The following example demonstrates how to use Commit and Rollback methods.

csharp

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

  SQLiteCommand sqCommand = new SQLiteCommand();
  sqConnection.BeginTransaction();
  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();
    sqConnection.Commit();
    Console.WriteLine("Both records are written to database.");
  }
  catch(Exception e)
  {
    sqConnection.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()
  sqConnection.BeginTransaction()
  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()
    sqConnection.Commit()
    Console.WriteLine("Both records are written to database.")
  Catch e As Exception
    sqConnection.Rollback()
    Console.WriteLine(e.ToString())
    Console.WriteLine("Neither record was written to database.")
  Finally
    sqConnection.Close()
  End Try
End Sub

Reference

SQLiteConnection Class
SQLiteConnection Members
Commit Method
BeginTransaction Method

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