C# Lambda expression -Help

Question

I am learning lambda expression and delegates.While i try to execute the following ,I am getting error at the line which is marked bold line. ( Error : Operator '+=' cannot be applied to operands of type 'Test.MessageDelegate' and 'lambda expression' ).Help me to handle lambda expression.

namespace Test
{
    public delegate void MessageDelegate(string title,object sender,EventArgs e);
    class Program
    {
        static event MessageDelegate logEvent;

        static void Main(string[] args)
        {
            logEvent = new MessageDelegate(OnLog);
            logEvent("title",Program.logEvent,EventArgs.Empty);

  Console.ReadKey(true); } static void OnLog(string title, object sender, EventArgs e) { if (logEvent != null) { Console.WriteLine("title={0}", title); Console.WriteLine("sender={0}", sender); Console.WriteLine("arguments={0}",e.GetType()); } } } } 

Answer 1

Since logEvent has MessageDelegate as its event handler, you'd need the left hand of the lambda expression (src, e) to match the signature of MessageDelegate

Change to (str, src, e) => OnLog(str, src, e)