C# parse string using regex - number adjacent to letter

Question

I'm having trouble writing a correct REGEX and parsing the string in C#. The string I get an input is:

{EnemyMove X:7 Y:8}

I need to digits the follow X and the digits that follow Y, the range is 0-10. Tried the code below, but the regex is incorrect and I get an incorrect result.

I need to run it twice, once to get the digits adjacent to X and second time for the digits after Y.

string str = "{EnemyMove X:9 Y:10}";
var regex_sp_chrs = new Regex("/X:.*?(\d+)/");
regex_sp_chrs.Matches(str );

Expected output - 9 10

Thanks in advance.

Answer 1

If you want to restrict the numbers to 0-10 range, replace \\d+ with 10|\\d :

X:(?<X>10|\d)\s+Y:(?<Y>10|\d)

See demo

So, you need to remove the delimiters (leading/trailing / ) and add the Y part.

Group X will contain the digits after X and Group Y will contain the digits after Y .

C# demo :

var str = "{EnemyMove X:9 Y:10}";
var regex_sp_chrs = new Regex(@"X:(?<X>10|\d)\s+Y:(?<Y>10|\d)");
var ms = regex_sp_chrs.Matches(str);
foreach (Match m in ms)
Console.WriteLine(string.Format("{0} - {1}", 
                   m.Groups["X"].Value,
                   m.Groups["Y"].Value));

It will output 9 - 10 , 9 is the m.Groups["X"].Value and 10 is the m.Groups["Y"].Value .

If you know {EnemyMove is static (always present as a literal before X ), add it to the regex to make it safer (ie @"{EnemyMove\\s+X:(?<X>\\d+)\\s+Y:(?<Y>\\d+)" ).