c# - Convert set of numbers to date -

i have string has format

20150622 yyyymmdd 

but need convert following format

year-month-date 2015-06-22 

is there way in c# need? don't see anyway treat strings arrays in c# there?

you can parse string datetime yyyymmdd format (there no dd specifier) , generate it's string representation yyyy-mm-dd format like;

string s = "20150622"; datetime dt = datetime.parseexact(s, "yyyymmdd", cultureinfo.invariantculture) console.writeline(dt.tostring("yyyy-mm-dd", cultureinfo.invariantculture)); 

output;

2015-06-22 

but if string parts doesn't range in year, month , day of gregorian calendar, solution won't work. in such case, can use string.substring method parts of string , format them - delimiter like;

var s = "20150622"; var result = string.format("{0}-{1}-{2}",                             s.substring(0,4),                             s.substring(4,2),                             s.substring(6,2)); 

result;

2015-06-22