string DllPath = Application.StartupPath + @"\someDLL.dll";
System.Reflection.Assembly assmble = System.Reflection.Assembly.LoadFile(DllPath);
Type tmpType = assmble.GetType("someDLL.ClassA");
System.Reflection.MethodInfo tmpM = tmpType.GetMethod("Add");
object tmpobj = assmble.CreateInstance("someDLL.ClassA");
int i = (int)tmpM.Invoke(tmpobj, new object[]{2,3});
－－－－－－－－－－ClassA的定义--------------------
using System;
namespace someDLL
{
/// <summary>
/// ClassA 的摘要说明。
/// </summary>
public class ClassA
{
public ClassA()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
public int Add(int a, int b)
{
return a+b;
}
}
}