c# Array last item,first Item index of

 string[] myarray = { "Pabi", "Pabitra", "Gitu", "Ram" };

               //Find First Element of an array
               //---------------------------------    
               Response.Write(myarray[0].ToString());
               // Last Element
               //-----------------
               int totalLength = myarray.Length;
               int LastItemIndex = totalLength - 1;
               Response.Write(myarray[LastItemIndex].ToString());

                 ////Index of an Array
                //-----------------
                //     Tips:
               //IndexOf methods return -1 when no element is found. This value often must be checked in an if-statement.
               int PositionOfIndex = Array.IndexOf(myarray, "Pabi");
               Response.Write(myarray[PositionOfIndex]);