使用UWP C#应用程序中的pinvoke调用LoadLibrary

问题描述

我正在尝试从C#UWP应用程序中的非托管dll调用方法.我这样做了，但是在非托管dll上使用了"LoadLibrary()"，这样我就可以使用它了.

I'm trying to call methods from an unmanaged dll from a C# UWP application. I do this, but pinvoking "LoadLibrary()" on the unmanaged dll so that I can use it.

这一切在Debug模式下都可以正常工作，但是在Release模式下，我得到一个奇怪的错误:

This all works fine in Debug mode, however in Release mode, I get a curious error:

消息:类初始化方法Tests.UnitTests.InitializeClient抛出异常. System.TypeLoadException:System.TypeLoadException:程序集"Client"中的P/Invoke方法"LoadLibrary！kernel32"未解决，版本= 1.0.0.0，Culture = neutral，PublicKeyToken = null，因为在UWP应用程序中不可用.请使用其他API或使用[DllImport(ExactSpelling = true)表示您了解使用非UWP应用程序API的含义.

Message: Class Initialization method Tests.UnitTests.InitializeClient threw exception. System.TypeLoadException: System.TypeLoadException: Unresolved P/Invoke method 'LoadLibrary!kernel32' in assembly 'Client, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' because it is not available in UWP applications. Please either use an another API , or use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP application APIs..

这是我定义负载库的方法:

Here is my method to pinvoke Load Library:

    [DllImport("kernel32", CharSet = CharSet.Unicode, SetLastError = true)]
    public static extern IntPtr LoadLibrary(string librayName);

不幸的是，如果我添加"ExactSpelling = true"，如下所示:

Unfortunately, if I add the "ExactSpelling = true" as below:

    [DllImport("kernel32", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
    public static extern IntPtr LoadLibrary(string librayName);

然后调用它会引发异常:

Then calling it throws an exception:

System.EntryPointNotFoundException:'无法在DLL'kernel32'中找到名为'LoadLibrary'的入口点.'

System.EntryPointNotFoundException: 'Unable to find an entry point named 'LoadLibrary' in DLL 'kernel32'.'

非常感谢您的帮助！

推荐答案

请改用LoadPackagedLibrary:

Use LoadPackagedLibrary instead:

[DllImport("API-MS-WIN-CORE-LIBRARYLOADER-L2-1-0.DLL", SetLastError = true)]
public static extern IntPtr LoadPackagedLibrary([MarshalAs(UnmanagedType.LPWStr)]string libraryName, int reserved = 0);

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