Question

i’m doing the simplest regex.match ever, i am giving the Regex.Match a pattern of one character and it returns no match at all, and i made sure the input text contains a lot of that character?

i checked all the usings.

its just very weird.

any help would be appreciated!

Thanks.

EDIT:

my sample is “doing any type of matching is simply not WORKING”
returns an empty match

Match m=Regex.Match(@"c","abcdc");

the code is compiled with no errors, so why the NO MATCHING!!

Answer 1

EDIT: based on your edit the issue is that you’re using the parameters out of order. You need to switch the order and supply the input (string source to find a match in) then the pattern (what to match against).

In fact, this order is specified for you by the IntelliSense as depicted in this image:

It usually helps to match the naming suggested by the IntelliSense or refer to it to ensure the proper items are being passed in.

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What is the character being used? Chances are you’re trying to use a character that is actually a metacharacter which holds special meaning in regex.

For example:

string result = Regex.Match("$500.00", "$").Value;

The above wouldn’t return anything since $ is a metacharacter that needs to be escaped:

string result1 = Regex.Match("$500.00", @"\$").Value;  // or
string result2 = Regex.Match("$500.00", "\\$").Value;  // or
string result3 = Regex.Match("$500.00", Regex.Escape("$")).Value;

For a list of common metacharacters that need to be escaped look at the Regex.Escape documentation.