C#图像重新着色的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
namespace WindowsApplication2
{
  public partial class Form18 : Form
  {
    public Form18()
    {
      InitializeComponent();
    }
    private void panel1_Paint(object sender, PaintEventArgs e)
    {
      Graphics g = e.Graphics;
      using (Bitmap bmp = new Bitmap(@"d:/我的文档/桌面/ico/Administrator.bmp"))
      {
        ColorMap[] colorMap = new ColorMap[1];
        colorMap[0] = new ColorMap();
        colorMap[0].OldColor = Color.Blue;
        colorMap[0].NewColor = Color.White;
        ImageAttributes attr = new ImageAttributes();
        attr.SetRemapTable(colorMap);
        Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
        rect.Offset(0, 0);
        g.DrawImage(bmp, rect, 0, 0, rect.Width, rect.Height, g.PageUnit, attr);
      }
    }
  }
}