反射入门

using System;

namespace ClassLibrary1
{
 public class Class1
 {
  public Class1()
  {
  }
  public int GetSum(int x, int y)
  {
   //return x + y;
   return 11;
  }
 }
}

 

System.Reflection.Assembly a = System.Reflection.Assembly.LoadFrom("ClassLibrary1.DLL");

   System.Type t = a.GetType("ClassLibrary1.Class1");

   //动态生成ClassLibrary1.Class类的实例
   Object theObj = System.Activator.CreateInstance(t);

   //参数信息，GetSum需要两个int参数
   System.Type[] paramTypes = new System.Type[2];
   paramTypes[0] = System.Type.GetType("System.Int32");
   paramTypes[1] = System.Type.GetType("System.Int32");

   System.Reflection.MethodInfo mi = t.GetMethod("GetSum", paramTypes);

   //参数值
   Object[] parameters = new Object[2];
   parameters[0] = 3;
   parameters[1] = 4;

   Object returnValue = mi.Invoke(theObj, parameters);
            textBox1.Text = returnValue.ToString();
   
   Console.WriteLine("ClassLibrary1.Class1.GetSum(3, 4) returns: {0}", returnValue.ToString());

 

///////////////////////

using System;
using System.Reflection;

public class MyClass
{
 public int i = 10;
 public int j = 2;
 public int MyFunc(int i , int j)
 {
  int k;
  k = i * 10 - j;
  return k;
 }
}
public class Type_GetMethod
{
 public static void Main()
 {
  try
  {
   // Get the type of MyClass.
   Type myType = typeof(MyClass);
   // Get the method information for MyFunc(int, int).
   MemberInfo myMemberInfo = myType.GetMethod("MyFunc", BindingFlags.Public |
    BindingFlags.Instance,
    null,
    CallingConventions.Any, 
    new Type[] {typeof(int),typeof(int)},
    null);
   Console.WriteLine("\nDisplaying information for MyFunc: \n");
   // Display the method information.
   Console.WriteLine("{0}", myMemberInfo);
  }
  catch(Exception e)
  {
   Console.WriteLine("Exception : {0}", e.Message);
  }
 }
}