C# DLL Reloading: DllImport Guide

In C#, reloading methods with DllImport is achieved by using the LoadLibrary and FreeLibrary functions.

1. LoadLibrary is a method used to load a library in a program.
2. The file named kernel32.dll

[DllImport("kernel32.dll")]
public static extern IntPtr LoadLibrary(string dllToLoad);

1. Library that is free
2. the kernel32 dynamic link library

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

You can first call the FreeLibrary function to release the previously loaded DLL when reloading the DLL, and then call the LoadLibrary function to reload the DLL.

Here is an example code snippet demonstrating how to reload a DLL file.

// 加载DLL文件
IntPtr hModule = LoadLibrary("mydll.dll");

// 使用DLL文件
// ...

// 释放已加载的DLL文件
FreeLibrary(hModule);

// 重新加载DLL文件
hModule = LoadLibrary("mydll.dll");

// 使用重新加载的DLL文件
// ...

// 释放已加载的DLL文件
FreeLibrary(hModule);

It is important to note that reloading a DLL file may cause some issues, such as resource leaks or failure to properly release resources. Therefore, it is best to ensure that all resources associated with it have been released before reloading the DLL.