Best way to create a “run-once” time delayed function in C#

Question

I am trying to create a function that takes in an Action and a Timeout, and executes the Action after the Timeout. The function is to be non-blocking. The function must be

Answer 1

This seems to work for me. It allows me to invoke _connection.Start() after a 15 second delay. The -1 millisecond parameter just says don't repeat.

// Instance or static holder that won't get garbage collected (thanks chuu)
System.Threading.Timer t;

// Then when you need to delay something
var t = new System.Threading.Timer(o =>
            {
                _connection.Start(); 
            },
            null,
            TimeSpan.FromSeconds(15),
            TimeSpan.FromMilliseconds(-1));