Вы можете использовать этот код, чтобы генерировать столько случайных значков, сколько вам нужно:
using System;
using System.Linq;
using System.Drawing;
using System.IO;
static class Program
{
[STAThread]
static void Main()
{
var gen = new RandomIconGenerator(32);
var dir = new DirectoryInfo(@"C:\RandIcons\");
if (!dir.Exists) dir.Create();
for (int it = 0; it < 1000; it++)
using (var s = new FileStream(@"C:\RandIcons\" + "icon-" + it + ".ico", FileMode.Create))
gen.MakeRandomIcon().Save(s);
}
}
/// <summary>
/// Generates random icons using various colored shapes and lines, using available brushes and pens.
/// </summary>
public class RandomIconGenerator
{
Random r = new Random();
Pen[] pens = typeof(Pens).GetProperties().Select(p => (Pen)p.GetValue(null, null)).ToArray();
Brush[] brushes = typeof(Brushes).GetProperties().Select(p => (Brush)p.GetValue(null, null)).ToArray();
int size;
public RandomIconGenerator(int size) { this.size = size; }
public Icon MakeRandomIcon()
{
using (Bitmap bmp = new Bitmap(size, size))
using (Graphics g = Graphics.FromImage(bmp))
{
for (int it = 0; it < 20; it++) this.GetRandomPainter()(g);
g.Flush();
return Icon.FromHandle(bmp.GetHicon());
}
}
private Pen GetRandomPen() { return this.pens[this.r.Next(this.pens.Length)]; }
private Brush GetRandomBrush() { return this.brushes[this.r.Next(this.brushes.Length)]; }
private Action<Graphics> GetRandomPainter()
{
switch (r.Next(5))
{
case 0: return g => g.DrawLine(this.GetRandomPen(), this.GetRandomPoint(), this.GetRandomPoint());
case 1: return g => g.DrawRectangle(this.GetRandomPen(), this.GetRandomRect());
case 2: return g => g.DrawEllipse(this.GetRandomPen(), this.GetRandomRect());
case 3: return g => g.FillRectangle(this.GetRandomBrush(), this.GetRandomRect());
case 4: return g => g.FillEllipse(this.GetRandomBrush(), this.GetRandomRect());
default: throw new Exception();
}
}
private Rectangle GetRandomRect()
{
var p0 = this.GetRandomPoint();
return new Rectangle(p0, new Size(this.GetRandomPoint()) - new Size(p0));
}
private int GetRandomPos() { return this.r.Next(this.size); }
private Point GetRandomPoint() { return new Point(this.GetRandomPos(), this.GetRandomPos()); }
}