Convert string variable to WaitCallback in ThreadPool.QueueUserWorkItem

Question

Is it possible to pass string variable as a WaitCallback parameter in ThreadPool.QueueUserWorkItem()

string myFunction="Go";
ThreadPool.QueueUserWorkItem(MyFunction);


public void Go(object obj)
{
       //Do Something
}

Answer 1

You'll need to use reflection.

For example:

WaitCallback callback = (WaitCallback) Delegate.CreateDelegate(
    typeof(WaitCallback), this, myFunction);
ThreadPool.QueueUserWorkItem(callback);

To use a method in a different class, change this to the target instance. If you want to call a static method, use the overload of CreateDelegate which takes a Type as the second parameter rather than an object.

Answer 2

You'll have to use reflection to get the method:

var method = this.GetType().GetMethod(myFunction, new Type[] { typeof(object) });
var d = (WaitCallback)Delegate.CreateDelegate(typeof(WaitCallback), this, method);
ThreadPool.QueueUserWorkItem(d);