C#

DateTime dt = DateTime.Parse("01/08/2006"); // be careful about the current culture here, may want to specify
OledbCommand cmd = new OleDbCommand "DELETE FROM EventLog WHERE EL_TimeStamp < ?;", connection);
cmd.Parameters.Add("@p1", OledbType.Date,dt);
cmd.Execute();

public class ShapedStrategy
{
    public void SomeShapedFunctionality(Control shapedControl)
    {
        // Do stuff.
    }
}
 
public class ShapedButton : Button
{
    private ShapedStrategy shapedStrategy;
 
    public override void OnPaint()
    {
        shapedStrategy.ShapedPaint(this);
    }
}

this.textBoxXX.ReadOnly = !this.textBoxXX.ReadOnly;