Method lock in c#

Question

I have one class with these three methods. This class is used by many threads. I would like the Method1 to wait, if Method2 and/or Method3 are running in any threads. Any sugges

Answer 1

The current implementation of your lock is completely useless, because every thread will lock on a different object.
Locking is usually done with a readonly field that is initialized only once.
Like this, you can easily lock multiple methods:

public class Class1
{
    private static readonly object _syncRoot = new object();

    public static void Method1() 
    {
        lock (_syncRoot)
        {
            //Body function
        }
    }

    public static void Method2() 
    {
        lock (_syncRoot)
        {
            //Body function
        }
    }

    public static void Method3() 
    {
        lock (_syncRoot)
        {
            //Body function
        }
    }
}