Lock Statement

A statement that allows only one thread at a time into a protected block for the same lock object.

What does Lock Statement do in C#?

Lock Statement — A statement that allows only one thread at a time into a protected block for the same lock object.

class Counter
{
    readonly object gate = new();
    int value;

    void Increment()
    {
        lock (gate)
        {
            value++;
        }
    }
}

Level: Master · More C# terms at this level

Updated September 27, 2026