三個程序集：
主程序集：BaseApp.exe
接口程序集：IBaseApplication
插件程序集：TestAttri
=======================================================================================
在接口程序中：
接口：IApp
屬性定義：ModuleAttribute

復(fù)制代碼代碼如下:

 
public interface IApp : IMothed 
{ 
void ParentForm(IApp frm); 
} 
namespace IBaseApplication.Attributes 
{ 
[AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Interface | AttributeTargets.Field | AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Property, AllowMultiple = true, Inherited = false)] 
public class ModuleAttribute : Attribute 
{ 
public string IdName { get; set; } 
public string ModuleName { get; set; } 
public Type ModuleType { get; set; } 
//public string AsmName { get; set; } 
//public string ClassName { get; set; } 
public string Description { get; set; } 
} 
} 

在插件程序集中：
在該插件程序集中的AssemblyInfo類中標(biāo)識如下

復(fù)制代碼代碼如下:

 
[assembly: IBaseApplication.Attributes.Module(ModuleType = typeof(UserControl1), IdName = "be4d9a5b-0455-4e9d-a255-25122b80bef1-UserControl1", ModuleName = "UserControl1", Description = "")] 
[assembly: IBaseApplication.Attributes.Module(ModuleType = typeof(UserControl2), IdName = "be4d9a5b-0455-4e9d-a255-25122b80bef1-UserControl2", ModuleName = "UserControl2", Description = "")] 

有兩個模塊分別是以下

復(fù)制代碼代碼如下:

 
namespace TestAttri 
{ 
public partial class UserControl1 : UserControl, IApp 
{ 
…… 
} 
} 
namespace TestAttri 
{ 
public partial class UserControl2 : UserControl, IApp 
{ 
…… 
} 
} 

=================================================================================================
在主程序集中：
將插件放至到：Application.StartupPath + "\\Plus"
引用了接口程序集“IBaseApplication”

復(fù)制代碼代碼如下:

 
/// <summary> 
/// 獲取插件文件名稱 
/// </summary> 
/// <returns></returns> 
public string[] GetPlusFiles() 
{ 
return System.IO.Directory.GetFiles(Application.StartupPath + "\\Plus"); 
} 
/// <summary> 
/// 加載插件 
/// </summary> 
public void LoadPluFiles() 
{ 
string[] files = GetPlusFiles(); 
Assembly assembly = Assembly.GetCallingAssembly(); 
foreach (string file in files) 
{ 
ModuleAttribute[] attributes = Assembly.LoadFile(file).GetCustomAttributes(typeof(ModuleAttribute), false) as ModuleAttribute[]; 
foreach (ModuleAttribute attribute in attributes) 
{ 
string m = attribute.ModuleType.FullName; 
string m1 = attribute.ModuleType.Assembly.GetName().Name; 
object obj = Activator.CreateInstance(attribute.ModuleType); 
if (obj is IApp) 
{//無法識別兩個模塊的接口。 
} 
} 
} 
} 