Question

I have a large project that utilises inline declared objects for one time use (brushes, colors, fonts etc).

when i run the code analysis tool in VS2010 I am warned that there are objects that dont get disposed on every path.

given the line of code below how can I ensure that the items raised are disposed explicitly when no longer in use or when an exception occurs.

g.DrawString(stringNames[i],
     (Font)new Font("Segoe UI", 7, FontStyle.Regular),
     (Brush)Brushes.Black, 
     new Point(hStart.X - 12, hStart.Y - 6));

thanks in advance

Answer 1

You can ensure your Graphics object gets immediately disposed after use by wrapping it inside of a using statement. The same goes for any object implementing IDisposable.

using (Graphics g = e.Graphics)  // Or wherever you are getting your graphics context
{
    using(Font font = new Font("Segoe UI", 7, FontStyle.Regular))
    {
        g.DrawString(stringNames[i], font, Brushes.Black, new Point(hStart.X - 12, hStart.Y - 6));
    }
}

As a side note, you don’t need to explicitly cast the Font or Brush object in your example above. These are already strongly typed.