C＃FreeLibrary（）ArithmeticException

问题描述

我正在使用Visual Studio 2012和C＃WPF应用程序。我实际上正在尝试加载3个DLL，然后卸载它们。我必须这样做，因为我不能添加这些DLL作为我的C＃项目的引用。
问题是我不断得到一个ArithmeticException与那些DLL。我需要所有这些，因为dll1需要dll2和dll3正常运行。
我已经执行了我的代码，这是发生了什么：
我的LoadLibrary （）确实找到所有的DLL。一旦我到达FreeLibrary（），没有错误，但是在我的代码结尾（完全是出门MainWindow（）），我得到一个ArithmeticException。

我已经尝试将每个FreeLibrary（）分开的，如果，看看其中一个是否没有正确执行，没有任何成功。

我也把每个FreeLibrary（）放在一个而中，以确保引用计数为0，但是我有另一个有趣的事情：我的应用程序锁在我最后的Dll上。它正确地执行了第一个和第二个而，但是被困在最后一个。我必须手动停止应用程序，我无法继续我的一步一步，并没有一个单一的错误或任何在线程堆栈。

这是我的代码：

  public partial class MainWindow：Window 
 {
 [DllImport（kernel32 .dll）] 
 static extern IntPtr LoadLibrary（string dllToLoad）; 
 
 [DllImport（kernel32.dll）] 
 static extern bool FreeLibrary（IntPtr hModule）; 
 
 public MainWindow（）
 {
 InitializeComponent（）; 
 try 
 {
 string dll1Path =dll / dll1.dll; 
 string dll2Path =dll / dll2.dll; 
 string dll3Path =dll / dll3.dll; 
 
 IntPtr dll3Link = LoadLibrary（dll3Path）; 
 IntPtr dll2Link = LoadLibrary（dll2Path）; 
 IntPtr dll1Link = LoadLibrary（dll1Path）; 
 
 if（FreeLibrary（dll3Link）== true&& FreeLibrary（dll2Link）== true&& FreeLibrary（dll1Link）== true）
 Console.WriteLine DLL已卸载）; 
 else 
 Console.WriteLine（一个或多个DLL未正确卸载）; 
 
} 
 catch（Exception ex）
 {
 Console.WriteLine（ERROR：+ ex.Message）; 
} 
 
} 
 
} 
  

解决方案

你的代码工作很好，对我来说你在哪里dll / dll1.dll，他们在你的bin / debug？

I am using Visual Studio 2012 and a C# WPF Application.
I am actually trying to load 3 DLLs and then unload them. I have to do this because I cannot add those DLL as a reference to my C# project.
The problem is that I keep getting an ArithmeticException with those DLL. I need all of them, because dll1 needs dll2 and dll3 to run properly.
I have been executed my code step by step, and here is what happend :
My LoadLibrary() do found all the DLLs. Once I get to the FreeLibrary(), there is no error, but at the end of my code (exactly, when going out of MainWindow()) I get an ArithmeticException.

I have already tried putting each of my FreeLibrary() in separated if to see if one of them were not executed correctly, without any success.
I have also put each of my FreeLibrary() in a while to be sure that the ref count goes to 0, but there I am having another interesting thing : my application get lock on my last Dll. It does the first and second while correctly, but get stuck to the last one. I have to manually stop the application, and I am not able to continue my step by step, and there is not a single error or whatever on the stacks of the threads.

Here is my code :

  public partial class MainWindow : Window
  {
    [DllImport("kernel32.dll")]
    static extern IntPtr LoadLibrary(string dllToLoad);

    [DllImport("kernel32.dll")]
    static extern bool FreeLibrary(IntPtr hModule);

    public MainWindow()
    {
        InitializeComponent();
        try
        {
            string dll1Path = "dll/dll1.dll";
            string dll2Path = "dll/dll2.dll";
            string dll3Path = "dll/dll3.dll";

            IntPtr dll3Link = LoadLibrary(dll3Path);
            IntPtr dll2Link = LoadLibrary(dll2Path);
            IntPtr dll1Link = LoadLibrary(dll1Path);

            if(FreeLibrary(dll3Link) == true && FreeLibrary(dll2Link) == true && FreeLibrary(dll1Link) == true)
                 Console.WriteLine("All DLL have been unloaded");
            else
                 Console.WriteLine("One or more DLL were not unloaded properly");

            }
        catch (Exception ex)
        {
            Console.WriteLine("ERROR : " + ex.Message);
        }

    }

}

解决方案

You code works just fine, for me. where is you dll/dll1.dll, are they in your bin/debug?

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