C#

// compiler error: "Cannot convert lambda expression to type 'dynamic' because it is not a delegate
dynamic dynamicFail = (o1, e1) => { MessageBox.Show("store in 'dynamic"); };

// compiler error: "Cannot assign lambda expression to an implicitly-typed local variable"
var varFail = (o2, e2) => { MessageBox.Show("store in 'var"); };

Action<dynamic,dynamic> myAction = (o3, e3) => { MessageBox.Show("Action works"); };
Func<dynamic, dynamic, string> myFunc = (o4, e4) => {return "Func works";};

Quote:

The underlying type of any lambda expression is a Func.

button1.Click += (obj, eva) => { MessageBox.Show("button1 clicked"); };

private void MethodTakesAFunc(Func<dynamic, dynamic, string> theFuncParam){}

private void MethodTakesAFunc(Func<dynamic, dynamic, string> theFuncParam)
{
    MessageBox.Show(theFuncParam(null, null));
}

private void BindControlToClickEvent(Control theControl, dynamic theEventParam)
{
    theControl.Click += theEventParam;
}

// create a new EventHandler
EventHandler myClickEvent = new EventHandler((obj, evn) => { MessageBox.Show("myClickEvent");});
// bind the new EventHandler to the Click Event of button2
BindControlToClickEvent(button2, myClickEvent);

DateTime datetime = DateTime.Now.Date;         
Console.WriteLine("Date is : " + datetime);

4/27/2013 12:00:00 AM

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