Except for the syntax, what is the difference, if any, between this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
Pen pen = null;
try
{
pen = new Pen(Color.MidnightBlue, 1.0F);
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
finally
{
if (pen != null)
pen.Dispose();
}
}
/* ---------------------------------------------------------------------- */
and this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
using (Pen pen = new Pen(Color.MidnightBlue, 1.0F))
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
/* ---------------------------------------------------------------------- */
?
Regards Carl Johansson 2 1363
On Sat, 01 Sep 2007 18:41:35 +0200, Carl Johansson <ca************@nogarbagehallde.comwrote:
Except for the syntax, what is the difference, if any, between this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
Pen pen = null;
try
{
pen = new Pen(Color.MidnightBlue, 1.0F);
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
finally
{
if (pen != null)
pen.Dispose();
}
}
/* ---------------------------------------------------------------------- */
and this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
using (Pen pen = new Pen(Color.MidnightBlue, 1.0F))
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
/* ---------------------------------------------------------------------- */
?
Regards Carl Johansson
Hi Carl,
They are equal. The using stament is equal to try/finally and will callDispose when the scope ends.
--
Happy coding!
Morten Wennevik [C# MVP]
Carl Johansson wrote:
Except for the syntax, what is the difference, if any, between this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
Pen pen = null;
try
{
pen = new Pen(Color.MidnightBlue, 1.0F);
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
finally
{
if (pen != null)
pen.Dispose();
}
}
/* ---------------------------------------------------------------------- */
and this...
/* ---------------------------------------------------------------------- */
private void Form1_Paint(object sender, PaintEventArgs e)
{
using (Pen pen = new Pen(Color.MidnightBlue, 1.0F))
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
/* ---------------------------------------------------------------------- */
?
Regards Carl Johansson
This code:
Pen pen = null;
try {
pen = new Pen(Color.MidnightBlue, 1.0F);
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
} finally {
if (pen != null) {
pen.Dispose();
}
}
is the exact equivalent of:
using (Pen pen = null) {
pen = new Pen(Color.MidnightBlue, 1.0F);
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
This code:
using (Pen pen = new Pen(Color.MidnightBlue, 1.0F)) {
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
}
is the exact equivalent of:
Pen pen = new Pen(Color.MidnightBlue, 1.0F);
try {
e.Graphics.DrawLine(pen, new Point(20, 270), new Point(20, 10));
} finally {
if (pen != null) {
pen.Dispose();
}
}
--
Göran Andersson
_____ http://www.guffa.com This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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