C#

I have a sample class as shown below
public class MyAirport
{
	delegate void ProcessAirport(string s);		
	ProcessAirport pa;
	public MyAirport(string  sAirportName)
	{
		pa = new ProcessAirport(ProcessMumbai);	
	}
	private void ProcessMumbai(string s)
	{
		MessageBox.Show(s);
	}
	public void ProcessAirport()
	{
		pa("Hello Mumbai");
	}
}

in the class above i have used created a delegate instance with statement
 pa = new ProcessAirport(ProcessMumbai);	
where in i am passing 'ProcessMumbai' directly as a function pointer to ProcessAirport delegate. 

now my question is : can i pass function pointer referance by string like,

 pa = new ProcessAirport("ProcessMumbai");	

if so, please guide.