C# 反射机制

C# 是一种面向对象的编程语言，但是通过反射机制，可以访问到类内部私有(即private）的成员和函数。

using System.Reflection;

 public static class DrawGraphics
 { 
   private static Graphics drawRGB,drawDepth;
   private static Size drawRGBSize,drawDepthSize;
   public static void drawPicture(string name, Bitmap image)
   {
    BindingFlags flag = BindingFlags.Static | BindingFlags.NonPublic;
    FieldInfo draw = typeof(DrawGraphics).GetField("draw" + name, flag);
    FieldInfo drawSize = typeof(DrawGraphics).GetField("draw" + name + "Size", flag);
    Graphics drawG = (Graphics)draw.GetValue(null);
    Size drawS = (Size)drawSize.GetValue(null);
    if (drawG!=null)
    drawG.DrawImage(new Bitmap(image, drawS), zeroPoint);
    }
 }

通过这种方式，可以动态的根据字符串的值来调用相应的函数、获得相应的变量。