Confusion about the lock statement in C#

Question

This is from MSDN: The lock keyword ensures that one thread does not enter a critical section of code while another thread is in the critical sectio

Answer 1

You put a lock on an object. If another thread tries to access a critical section marked by that object at the same time, it will block until the lock is removed/complete.

Example:

public static object DatabaseLck= new object();

lock (DatabaseLck) {
        results = db.Query(query).ToList();
     }

Or

lock (DatabaseLck) {
       results = db.Query(string.Format(query, args)).ToList();
  }

Neither one of those code blocks can be run at the same time BECAUSE they use the same lock object. If you used a different lock object for each, they could run at the same time.