(C #) draw a line with a PEN

// Implementation function: draw a line with the created PEN.

// (This example uses using to create a Pen. The advantage is that when the object (pen) is out of scope, the using structure automatically calls Dispose () to delete the PEN.

// If you use other methods to create a Drawing Object (usually resources are charged), you must explicitly call Dispose (), for example:

// "Graphics g = this. CreateGraphics ();

//........

//........

// G. Dispose ();"

// Key points:

// Create a Pen. The color and Width of the Pen are used to obtain the height and Width of the customer area.



Using System;

Using System. Collections. Generic;

Using System. ComponentModel;

Using System. Data;

Using System. Drawing;

Using System. Text;

Using System. Windows. Forms;



Namespace myDrawPanA

{

Public partial class Form1: Form

{

Public Form1 ()

{

InitializeComponent ();

}



Protected override void OnPaint (PaintEventArgs e)

{

// Base. OnPaint (e );

Graphics g = e. Graphics;

Using (Pen myPen = new Pen (Color. Red, 1 ))

{

If (ClientRectangle. Height/10> 0)

{

For (int y = 0; y <ClientRectangle. Height; y + = ClientRectangle. Height/10)

{

G. DrawLine (myPen, new Point (0, 0), new Point (ClientRectangle. Width, y ));

}

}

}

}





}

}