What is the cause of "DLL load failed while importing cv2" using the pythondll under the same folder of the csproj? #2157

Python version: 3.10.6
Dotnet Version: 7.0.203
opencv-python Version: 4.7.0
Pythonnet Version: 3.0.1

In this csproject, I have python310.dll undder the same folder of my cs program. Below is th e c# code

using System;
using Python.Runtime;
using System.Collections.Generic;

namespace autofocus_csharp
{
    class canny_edge_counts
    {
        public static void Initializer()
        {
            string pythonDll = @"python310.dll";
            //string pythonDll = @"C:\Users\xxxx\AppData\Local\Programs\Python\Python310\python310.dll";
            Environment.SetEnvironmentVariable("PYTHONNET_PYDLL", pythonDll);
            // dynamic dict = Environment.GetEnvironmentVariables();
            // foreach(string key in dict.Keys)
            // {
            // Console.WriteLine(String.Format("{0}: {1}", key, dict[key]));
            // }
            PythonEngine.Initialize();
        }
        static void Main(string[] args){
            string[] photo_path = new string[1]{"C:/Users/xxxx/Downloads/example.jpg"};
            Initializer();
            using (Py.GIL())
            {
                dynamic np = Py.Import("numpy");
                dynamic cv = Py.Import("cv2");
            }
            PythonEngine.Shutdown();
        }
    }
}

If I set the path of SetEnvironmentVariable "PYTHONNET_PYDLL" as @"python310.dll",

string pythonDll = @"python310.dll";
Environment.SetEnvironmentVariable("PYTHONNET_PYDLL", pythonDll);

will result the following error
Unhandled exception. Python.Runtime.PythonException: DLL load failed while importing cv2: The specified module could not be found. File "C:\Users\xcxx\AppData\Local\Programs\Python\Python310\Lib\importlib\__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "C:\Users\xxcx\AppData\Local\Programs\Python\Python310\lib\site-packages\cv2\__init__.py", line 153, in bootstrap native_module = importlib.import_module("cv2") File "C:\Users\xxcx\AppData\Local\Programs\Python\Python310\lib\site-packages\cv2\__init__.py", line 181, in <module> bootstrap() at Python.Runtime.PythonException.ThrowLastAsClrException() at Python.Runtime.NewReferenceExtensions.BorrowOrThrow(NewReference& reference) at Python.Runtime.PyModule.Import(String name) at Python.Runtime.Py.Import(String name) at autofocus_csharp.canny_edge_counts.Main(String[] args) in D:\Alltempo\autofocus_csharp\canny_edge_counts.cs:line 27
But if I set the absolute path of the python310.dll where my python is installed

string pythonDll = @"C:\Users\xxxx\AppData\Local\Programs\Python\Python310\python310.dll";
Environment.SetEnvironmentVariable("PYTHONNET_PYDLL", pythonDll);

then there will be no error.

By exaimning the Environment.GetEnvironmentVariables(), having the abs path, Environment.SetEnvironmentVariable will return less system variables then having @"python31.dll", which I don't know wether it matters.
The same error did appears when printing out the Environment.GetEnvironmentVariables() when the path is @"python310.dll"

Both scenario numpy is functioning normally, so is there a way use python310.dll instead?
I will commit or paste the code of the init.py if someone intreasted. Thanks in advance.