I need to create a Thread-safe static variable in C# .Net

Question

ok, its a little more complicated than the question.

class A
{
   static int needsToBeThreadSafe = 0;

   public static void M1()
   {
     needsToBeThreadSa         


        

Answer 1

To start with I agree with the answers using lock(), that is the safest way.

But there exists a more minimalist approach, your sample code only shows single statements using needsToBeThreadSafe and since int is atomic you only need to prevent caching by the compiler using volatile:

class A
{
   static volatile int needsToBeThreadSafe = 0;

}

But if you need needsToBeThreadSafe to be 'ThreadSafe' over multiple statements, use a lock.