Csharp/CSharp Tutorial/2D/Draw Rectangle
Draw a rectangle
<source lang="csharp">using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class DrawARectangle : System.Windows.Forms.Form {
public DrawARectangle() { this.BackColor = System.Drawing.Color.White; this.ClientSize = new System.Drawing.Size(400, 400); this.Paint += new System.Windows.Forms.PaintEventHandler(this.DrawARectangle_Paint); } static void Main() { Application.Run(new DrawARectangle()); } private void DrawARectangle_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { Graphics g = e.Graphics; Pen p = new Pen(Color.Black, 5); g.DrawRectangle(p, 10, 10, 200, 200); }
}</source>
Fill a rectangle with different HatchBrush-Styles
<source lang="csharp">using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; // LinearGradientBrush public class Form1 : System.Windows.Forms.Form {
[STAThread] static void Main() { Application.Run(new Form1()); } protected override void OnPaint(PaintEventArgs e) { Graphics g = e.Graphics; Font f = new Font(new FontFamily("Times New Roman"), 10); Brush fb = new SolidBrush(Color.Black); Color cb = Color.Red, cf = Color.White; int wi = 30, hi = 25, rectNb = 14; int x, y; HatchBrush hb = null; for (int i = 0; i < 53; i++) { x = (int)(i % rectNb); y = (int)(i / rectNb); hb = new HatchBrush((HatchStyle)i, cf, cb); g.FillRectangle(hb, 2 + x * (5 + wi), 2 + y * (5 + hi), wi, hi); } fb.Dispose(); hb.Dispose(); g.Dispose(); }
}</source>