为什么AssemblyResolver即使在加载dll（manualy）时也会触发？(Why AssemblyResolver fire even when dll is loaded (manualy)?)

 我有2个项目的C＃解决方案： 
 
 
 
 DLLTest（控制台应用） 
 
 
 BLib（图书馆） 
 
 
 在DLLTest中，我设置了对BLib的引用，并将Copy Local属性设置为false。 
 编译解决方案。 
 将BLib.dll复制到'C：\ BLib.dll'并运行应用程序。 
 在我的代码的第一步，我从路径'C：\ BLib.dll'加载程序集，然后从那里调用方法。 在从BLib程序集调用方法时触发AssemblyResolver并尝试加载我手动加载的程序集。 
 
 我可以做一些应用程序，知道库已经加载，而不是尝试再次加载它？ 
 这是来自BLib项目的BClass.cs文件： 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BLib
{
    public class BClass
    {
        public static void PrintName()
        {
            Console.WriteLine("BLib");
        }
    }
}
 
 这是DLLTest项目的Program.cs文件： 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;

namespace DLLTest
{
    class Program
    {
        static void Main(string[] args)
        {
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
            Assembly.LoadFile(@"C:\BLib.dll");
            Console.WriteLine("Loaded assembles:");
            AppDomain.CurrentDomain.GetAssemblies().ToList()
                .ForEach(p => Console.WriteLine(p));
            Console.WriteLine("End list of assembles");
            try
            {
                PrintMessage();
            }
            catch(Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.ReadKey();
        }

        private static void PrintMessage()
        {
            BLib.BClass.PrintName();
        }

        private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
        {
            Console.WriteLine(args.Name);
            return null;
        }
    }
}

I have C# solution with 2 project: 
 
 
 
DLLTest (Console app)
 
 
BLib (library) 
 
 
In DLLTest I set reference to BLib and set Copy Local property to false.
 Compile solution.
 Copy BLib.dll to 'C:\BLib.dll' and run application.
 In first step in my code I load Assembly from path 'C:\BLib.dll' then invoke method from there. On invoking method from BLib assembly fire AssemblyResolver and try load assembly which I loaded before manually. 
 
Can I do something that application to know that the library has already been loaded and not try load it again?
 This is BClass.cs file from BLib project: 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BLib
{
    public class BClass
    {
        public static void PrintName()
        {
            Console.WriteLine("BLib");
        }
    }
}
 
This is Program.cs file from DLLTest project: 
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;

namespace DLLTest
{
    class Program
    {
        static void Main(string[] args)
        {
            AppDomain.CurrentDomain.AssemblyResolve += CurrentDomain_AssemblyResolve;
            Assembly.LoadFile(@"C:\BLib.dll");
            Console.WriteLine("Loaded assembles:");
            AppDomain.CurrentDomain.GetAssemblies().ToList()
                .ForEach(p => Console.WriteLine(p));
            Console.WriteLine("End list of assembles");
            try
            {
                PrintMessage();
            }
            catch(Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            Console.ReadKey();
        }

        private static void PrintMessage()
        {
            BLib.BClass.PrintName();
        }

        private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
        {
            Console.WriteLine(args.Name);
            return null;
        }
    }
}

原文：https://stackoverflow.com/questions/32178367