c# : how to read from specific index in List<person> -

i have class of persons , list collection list contains values of person class such :

list ilist has 2 values [0]={firstname,lastname} . [1]={firstname2,lastname2}

now when iterating list able print list want change value of parts of list e.g in index 1 if want change value of firstname2 firstname3 not able . can tell me how print list , on index changing value of index , i.e. firstname , secondname variable in person class can update values

according docs on msdn can use familiar index operator (like on use on arrays). mylist[1].lastname = "new last name"; should you.

docs here; http://msdn.microsoft.com/en-us/library/0ebtbkkc.aspx

keep in mind need bounds checking before access.