C#

<br />
Mixed mode assembly is built against version 'v2.0.50727' of runtime and cannot be loaded in the 4.0 runtime without additional configuration.<br />

<?xml version="1.0"?>
<configuration>

  <startup useLegacyV2RuntimeActivationPolicy="true">

    <!-- 4.0 RTM -->
    <supportedRuntime version="v4.0.30319"/>

    <!-- 2.0 RTM -->
    <supportedRuntime version="v2.0.50727"/>

    
  </startup>

</configuration>

GetItemChildAsync

[HttpGet]
public async Task<IActionResult> GetSpecialPostsList()
{
    var posts = await myContext.Posts.Where(x => x.IsSpecialPost == true && x.IsActive == true).ToListAsync();
    if (posts != null)
    {
        var revisedPost = new RevisedPost();
        var revisedPostList = new List<RevisedPost>();
        foreach (var post in posts)
        {
            revisedPost.CreationDate = DateConverter.GregToPersianDate(post.CreationDate.ToShortDateString());
            revisedPost.Description = post.Description;
            revisedPost.ImageFileName = post.ImageFileName;
            revisedPost.IsActive = post.IsActive;
            revisedPost.IsMainPost = post.IsMainPost;
            revisedPost.IsSpecialPost = post.IsSpecialPost;
            revisedPost.Title = post.Title;
            revisedPost.Id = post.Id;

            revisedPostList.Add(revisedPost);
        }
        return Ok(revisedPostList);
    }
    return NotFound("Data not found!");
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Text.Json;

using System.Threading.Tasks;
using System.Windows.Forms;

namespace test_team_2
{
    public partial class Form1 : Form
    {
        string[] cmdLineMe = Environment.GetCommandLineArgs();
        string webhookPdfTermine = "uri to my team groups;
        HttpClient client = new HttpClient();
        Message body = new Message();
        string finalMessage = "";


        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            for (int i = 0; i < cmdLineMe.Length; i++)
            {
                finalMessage = cmdLineMe[i];
            }

            sendMsg();

        }

        public class Message
        {
            public string text { get; set; }
        }

        private async Task SendMsgAsync()
        {

            MessageBox.Show(finalMessage);
            client.BaseAddress = new Uri(webhookPdfTermine);
            body.text = finalMessage;
            string serializeJson = JsonSerializer.Serialize(body);
            StringContent content = new StringContent(serializeJson, Encoding.UTF8, "application/json");
            _ = await client.PostAsync(client.BaseAddress, content);
        }

        void sendMsg()
        {
            
            _ = SendMsgAsync();

        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text.Json;

namespace TeamBots
{
    class Program
    {
        string[] cmdLineMe = Environment.GetCommandLineArgs();
        string webhookPdfTermine = "uri to my team groups";
        HttpClient client = new HttpClient();
        Message body = new Message();
        string finalMessage = "";

        static void Main(string[] args)
        {
            Program myprog  = new Program(); 

            for (int i = 0; i < myprog.cmdLineMe.Length; i++)
            {

                myprog.finalMessage = myprog.cmdLineMe[i];
            }


            myprog.sendMsg(); 
        }

        private async Task SendMsgAsync()
        {

            Console.WriteLine(finalMessage);
            client.BaseAddress = new Uri(webhookPdfTermine);
            body.text = finalMessage;
            string serializeJson = JsonSerializer.Serialize(body);
            StringContent content = new StringContent(serializeJson, Encoding.UTF8, "application/json");
            _ = await client.PostAsync(client.BaseAddress, content);
        }

        void sendMsg()
        {
          
            _ = SendMsgAsync();

        }




        public class Message
        {
            public string text { get; set; }
        }
    }
}