How to compare value with the same textbox in C#?

[ceeblaj]

I have a text format like this:
12-22-24-22-33-13
when user click a button then check for duplicated number in that text.
how to handle this in C#.

[Frinavale]

You could split the string on the "-" character.

Then loop through the array that results from the split and look for any duplicates either by using regular expressions to search for the text/number or by looping through the results a second time (skipping the index you are currently on or taking into account that you will have at least 1 match because the item you are looking for is definitely in the string) to see if there are any others that match.


-Frinny