多个Pen对象C＃

Question

I have a form in which i draw some lines using the Pen object. 我有一种使用Pen对象绘制线条的形式。

I'm wondering if i should use one shared object Pen, or one object Pen per line drawn. 我想知道是否应该使用一个共享对象的Pen或每绘制一条线使用一个对象的Pen。

Is is better to use: (one object shared by all lines) 最好使用：（所有行共享一个对象）

Pen green;
green = new Pen(Color,size);
foreach(line to be drawn)
   graphics.DrawLine(green, x1, y1, x2, y2);

Or the following: (each line is an object) 或以下内容：（每行都是一个对象）

foreach(line to be drawn)
   Pen green = new Pen(Color.Green, 3);
   graphics.DrawLine(green, x1, y1, x2, y2);
   green.Dispose();

In fact, both examples do what I want, but i'm wondering what is most recommended in this case. 实际上，两个示例都可以满足我的要求，但是我想知道在这种情况下最推荐的是什么。

Note: I'm using C# (WinForms) 注意：我正在使用C＃（WinForms）

Answer 1

If I were you 如果我是你

using (var green = new Pen(Color,size)
{
    foreach(line to be drawn)
    {
        graphics.DrawLine(green, x1, y1, x2, y2);
    }
}

Answer 2

Take a look at this one: What happens if I don't call Dispose on the pen object? 看看这一点：如果我不对笔对象调用Dispose，会发生什么？ It seems to be perfectly explained here ... 这似乎在这里得到了完美的解释...

To keep it short, this one seems to be better : 为了简短起见，这似乎更好：

Pen green = new Pen(Color,size);

foreach(line to be drawn)
   graphics.DrawLine(green, x1, y1, x2, y2);

green.Dispose();