[C # Learning Note] a question on csdn

The hidden methods in delegation are somewhat confusing. Please give instructions by experts.
The three paragraphs belowCodeWhat is the difference between code1, code2, and code3? It is best to give a detailed description.

 

Code1:

 
Using system; namespace consoleapplication1 {class program {delegate string delegatetest (string Val); static void main (string [] ARGs) {string mid = ", middle part ,"; delegatetest anondel = delegate (string PARAM) {Param + = mid; Param + = "and this is added to the string. "; return Param ;}; console. writeline (anondel ("Start of string "));}}}
 

Code2:

 

Using system; namespace consoleapplication1 {class program {delegate string delegatetest (string Val); static string mid = ", middle part,"; static void main (string [] ARGs) {delegatetest anondel = new delegatetest (delmethod); console. writeline (anondel ("Start of string");} static string delmethod (string PARAM) {Param + = mid; Param + = "and this is added to the string. "; return Param ;}}}
 

 

Code3:

Using system; namespace consoleapplication1 {class program {delegate string delegatetest (string Val); static void main (string [] ARGs) {string mid = ", middle part ,"; delegatetest anondel = new delegatetest (delegate (string PARAM) {Param + = mid; Param + = "and this is added to the string. "; return Param;}); console. writeline (anondel ("Start of string "));}}}
 

 

 

I just learned about delegation. I will answer O (∩ _ ∩) O Haha ~

 

Code1 and code3 should both be anonymous, and code2 should be standard. Code1 and code3 are only issues in writing.