C＃方法锁定不起作用

Question

I have an exe file that needs to run multiple times.

In the C# code I have a method that reads some value from the database and changes it. I want to prevent more than one exe command getting this method. I tried to use lock mechanism but it doesn't work

private static readonly object locker = new object();

private void myFunc()
    {

        lock (locker)
        {

           //my code

        }
    }

Answer 1

lock is only valid at thread level (inside one process).

I have an exe file that need to run multiply times.

If you use multiple process to achieve your task, you should use a use Mutex instead.

Here is way to do it:

private static Mutex mut = new Mutex(false, "MyFuncLock") ; 

private void myFunc()
{
    mut.WaitOne();

       //your code

    mut.ReleaseMutex();
}