Regex and split

Question

Hey everybody ! i've got some troubles to split a text i need to split it according to chars like |  :  or 
 but i also need to split it according to Regex and the method split(char[]) doesn't allow regex when i try this : string[] separators = { | ! : 
 @=...+ }; string[] SplittedText = alltext.Split(separatorsStringSplitOptions.RemoveEmptyEntries); the last one doesn't work and my result array splittedtext still contains the lines with ========= ..... is there a solution except the fact to first split my text according to @=...+ and then split it again according to | ! : 
 ??? THX !

Vulpes · Answer

The string split variation I gave earlier would work on that line leaving just the '+' signs which I assume represents any amount of text which doesn't include '=' signs.

jean tindel · Answer

hey actually i want to split a whole line who looks like =====+=====+======= but i finally combine Regex.Split follow by String.split and it works :) but it's slower....

Vulpes · Answer

The @ sign is only used with string constants when you want the compiler to read an escape sequence such as 
 'literally' i.e. a back slash followed by the letter 'n' rather than as the line feed character (ASCII 10). If you're reading the string in from a file then there's no need to decorate it with an @ whatever it contains. I'm not sure that Ramchand needed to use it in his example anyway as when you used 
 I suspect you did in fact mean the line feed character rather than a backslash followed by an 'n'. When you used the expression @=...+ did you in fact intend it to be read literally? If you meant an indefinite number of consecutive '=' signs (but at least one) then this should work: string[] separators = { | ! : 
 =}; string[] SplittedText = alltext.Split(separatorsStringSplitOptions.RemoveEmptyEntries); However if you meant anything more complicated than that then you'll probably need to use Regex.Split which is much more powerful than string.Split.

jean tindel · Answer

hey Ramchand yeah your solution works fine but my input file is not in raw if you know what i mean i am using string alltext = File.ReadAllText( string PathOfFile) and in this case where should i write the @ ?

Ramchand Repalle · Answer

Hello jean I have tried with the separators you mentioned above. It seems working fine.. Please check with dotnet fiddle code once: https://dotnetfiddle.net/Y6Js0D Thanks Ramchand