c# - Replacing all occurrences of alphanumeric characters in a string -


i'm trying replace alphanumeric characters in string character "-" using regex. if input "dune" should "----". though i'm getting single "-";

string s = "^[a-za-z0-9]*$"; regex rgx = new regex(s); string s = "dune"; string result = rgx.replace(s, "-");  console.writeline(result); console.read();

right know looking string "dune" rather letters "d" "u" "n" "e". can find class work.

your regex greedy, remove * , start end string matches. should be

string s = "[a-za-z0-9]";

this match 1 character anywhere in string rather all. @ shorthand alphanumeric

string s= "\w";

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