Any difference is there Invoke Method (Delegate) and direct call? [duplicate]

Question

May be this question asked earlier ,i did googling but i didnt get answer.

Delegate Prototype

delegate void method1(string str); 

Adding Callback methods

method1 objDel2;            objDel2 = new method1(TestMethod1);             objDel2("test"); objDel2.Invoke("Invoke"); 

In Above coding objDel2("test"); and objDel2.Invoke("Invoke"); are doing same task.Which one is good or both are same .

Answer 1

They are 100% identical - this is pure compiler sugar (see below). As for which is preferred: neither / both.

static class Program {      static void Main()     {         method1 objDel2;         objDel2 = new method1(TestMethod1);         objDel2("test");         objDel2.Invoke("Invoke");     }     delegate void method1(string val);     static void TestMethod1(string val) {         System.Console.WriteLine(val);     } } 

has the IL

.method private hidebysig static void Main() cil managed {     .entrypoint     .maxstack 2     .locals init (         [0] class Program/method1 'method')     L_0000: ldnull      L_0001: ldftn void Program::TestMethod1(string)     L_0007: newobj instance void Program/method1::.ctor(object, native int)     L_000c: stloc.0      L_000d: ldloc.0      L_000e: ldstr "test"     L_0013: callvirt instance void Program/method1::Invoke(string) ***HERE***     L_0018: ldloc.0      L_0019: ldstr "Invoke"     L_001e: callvirt instance void Program/method1::Invoke(string) ***HERE***     L_0023: ret  } 

Note both do the same thing (see the two locations marked by me as ***HERE***)