Main Thread

whatthreadami.cs

Thread uiThread;

uiThread = Thread.CurrentThread; //Ensure this is called during a Main/UI thread call

void WhatThreadAmI([CallerMemberName] string method = "", [CallerLineNumber] int line = 0)
{
    Console.WriteLine("=========================");
    Console.WriteLine("=========================");
    Console.WriteLine("=========================");
    Console.WriteLine($"{method} - {line}" {IsMainThread}");
    Console.WriteLine("=========================");
    Console.WriteLine("=========================");
    Console.WriteLine("=========================");
}

public bool IsMainThread => uiThread == Thread.Current;