我想从MVC中的.dll文件导入方法,并在Controller的操作中运行它们。是否可以使用MEF?是的,我该怎么办?
我终于搞定了。写下这个答案以防万一有人被击中。
接口DLL
namespace MefContracts
{
public interface IPlugin
{
String Work(String input);
}
}
包含所需方法的插件
namespace Plugin
{
[Export(typeof(MefContracts.IPlugin))]
public class Mytest:MefContracts.IPlugin
{
public String Work(String input)
{
return "Plugin Called from dll with (Input: " + input + ")";
}
}
}
Program.cs中
(将其包含在您的主MVC项目中)。该类包含链接所有导入和导出的函数。
namespace MyTest
{
public class Program
{
private CompositionContainer _container;
[Import(typeof(MefContracts.IPlugin))]
public MefContracts.IPlugin plugin;
public Program()
{
var catalog = new AggregateCatalog();
catalog.Catalogs.Add(new DirectoryCatalog(@"D:\Temp"));
_container = new CompositionContainer(catalog);
try
{
this._container.ComposeParts(this);
}
catch (CompositionException compositionException)
{
Console.WriteLine(compositionException.ToString());
}
}
}
}
最后从Controller调用此方法
public class HomeController : Controller
{
Program p = new Program();
public ActionResult Index()
{
ViewBag.Message = p.plugin.Work("test input");
return View();
}
}