C#动态加载dll扩展系统功能的方法

using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace DynamicLoadDLL{ /// <summary> /// 动态加载dll /// </summary> public class LoadDLL {  private Assembly ass = null;  /// <summary>  /// 加载dll  /// </summary>  /// <param name="dllPath">dll文件路径</param>  public LoadDLL(string dllPath)  {   this.ass = Assembly.LoadFrom(dllPath);  //利用dll的路径加载(fullname)  }  /// <summary>  /// 返回反射的dll  /// </summary>  /// <returns></returns>  public Assembly GetAssembly()  {   return this.ass;  }  /// <summary>  /// 获取所有类名  /// </summary>  /// <returns></returns>  public Type[] GetClass()  {   return ass.GetTypes();  }  /// <summary>  /// 获取程序集下的所有文件名  /// </summary>  /// <returns></returns>  public Module[] GetModules()  {   return ass.GetModules();  }  /// <summary>  /// 获取程序集清单文件表中的文件  /// </summary>  /// <returns></returns>  public FileStream[] GetFiles()  {   return ass.GetFiles();  } }}

using System;using System.Collections.Generic;using System.Linq;using System.Reflection;using System.Text;using System.Threading.Tasks;namespace DynamicLoadDLL{ /// <summary> /// 加载类 /// </summary> public class LoadClass {  private static LoadClass dlc = null;  private Type type;  private object obj = null;  //实例  /// <summary>  /// 加载dll  /// </summary>  /// <param name="ass">dll引用</param>  /// <param name="nameSpace">类的命名空间</param>  /// <param name="classPath">类名称</param>  private LoadClass(Assembly ass, string nameSpace, string classPath)  {   //加载dll后,需要使用dll中某类.   type = ass.GetType(nameSpace + "." + classPath);   //利用类型的命名空间和名称获得类型   //需要实例化类型,才可以使用,   //参数可以人为的指定,也可以无参数,静态实例可以省略   obj = Activator.CreateInstance(type);  //利用指定的参数实例话类型  }  /// <summary>  /// 加载dll  /// </summary>  /// <param name="ass">dll引用</param>  /// <param name="nameSpace">类的命名空间</param>  /// <param name="classPath">类名称</param>  public static LoadClass GetInstance(Assembly ass, string nameSpace, string classPath)  {   if (dlc == null)   {    dlc = new LoadClass(ass, nameSpace, classPath);   }   return dlc;  }  /// <summary>  /// 获取属性集  /// </summary>  /// <returns>返回属性值</returns>  public PropertyInfo[] GetAttrs()  {   //调用类型中的某个属性:   PropertyInfo[] prop = type.GetProperties();   //通过属性名称获得属性   //返回属性集   return prop;  }  public MethodInfo[] GetMethods()  {   //调用类型中的方法:   MethodInfo[] method = type.GetMethods(BindingFlags.NonPublic);   //获得方法集   //返回方法集   return method;  }  /// <summary>  /// 获取属性值  /// </summary>  /// <param name="attrName">属性名称</param>  /// <returns>返回属性值</returns>  public object GetAttrValue(string attrName)  {   //调用类型中的某个属性:   PropertyInfo prop = type.GetProperty(attrName);   //通过属性名称获得属性   //返回属性值   return prop.GetValue(obj);  }  /// <summary>  /// 设置属性值  /// </summary>  /// <param name="attrName">属性名称</param>  /// <returns>返回属性值</returns>  public void SetAttrValue(string attrName, string attrValue)  {   //调用类型中的某个属性:   PropertyInfo prop = type.GetProperty(attrName);   //通过属性名称获得属性   //返回属性值   prop.SetValue(obj, attrValue);  }  /// <summary>  /// 执行类方法  /// </summary>  /// <param name="methodName">方法名称</param>  /// <param name="paras">参数</param>  /// <param name="types">参数类型</param>  /// <returns></returns>  public object GetMethod(string methodName, object[] paras,Type[] types)  {   //调用类型中的某个方法:   MethodInfo method = type.GetMethod(methodName,types);   //通过方法名称获得方法   //执行方法   return method.Invoke(obj, paras);  } }}