c# - Display numbers with 20 in front of var -


how can display numbers 20 in front of var? (i.e. \20172018\inv instead of \1718\inv)

insert 20 @ particular places building new string substrings. assuming variable in string called s:

string newstring = s.substring(0,1) + "20" + s.substring(1,2) + "20" + s.substring(3,6);

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