The indexer for the C # language

usingSystem;usingSystem.IO;namespaceconsoleapplication2{classProgram {Static voidMain (string[] args) {            varNames =NewIndexednames (); names[0] ="Hello"; names[1] ="Hong"; names[2] ="Qian"; names[3] ="Jin"; names[4] ="name"; names[5] ="Hao"; names[6] ="Good";  for(inti =0; I <=6; i++) {Console.WriteLine (names[i]); } Console.WriteLine (names["Jin"]); Console.WriteLine (names["AAAA"]);        Console.readkey (); }         }    classIndexednames {Private string[] namelist=New string[Ten];  PublicIndexednames () { for(inti =0; i < namelist.length; i++) {Namelist[i]="N /A"; }        }         Public string  This[intIndex] {            Get            {                stringtmp; if(Index >0&& Index <= Namelist.length-1) {tmp=Namelist[index]; }                Else{tmp=""; }                returntmp; }            Set            {                if(Index >0&& Index <= Namelist.length-1) {Namelist[index]=value; }            }        }         Public int  This[stringName] {            Get            {                intindex =0;  while(Index <namelist.length) {if(Namelist[index] = =name) {                        returnindex; } Index++; }                return-1; }        }    }     Public InterfaceISomeInterface {int  This[intIndex] {            Get; Set; }    }    classIndexerclass:isomeinterface {Private int[] arr=New int[ -];  Public int  This[intIndex] {            Get            {                returnArr[index]; }            Private Set{Arr[index]=value; }         }    }}

The indexer for the C # language