Question

c#中“WriteChar”的重载均与委托“System.Timers.ElapsedEventHandler”不匹配

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Timers;

namespace ConsoleApplication4
{
class Program
{
static int counter = 0;
static string displayString = "this one letter";
static void Main(string[] args)
{
Timer myTimer = new Timer(100);
myTimer.Elapsed += new ElapsedEventHandler(WriteChar);
myTimer.Start();
Console.ReadKey();

}
static void WriteChar(Object source, EventHandler e)
{
Console.Write(displayString[counter++ % displayString.Length]);
}
}
}

Answer 1

函数原型不匹配.试试把EventHandler 改为EventArgs
如果不行就查查MSDN.ElapsedEventHandler的函数原型