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Regular Expressions

 
AnswerRe: how to make username regex for windows forms PinmemberKenneth Haugland30-Sep-12 23:32 
GeneralRe: how to make username regex for windows forms Pinmembersariqkhan1-Oct-12 0:11 
GeneralRe: how to make username regex for windows forms PinmvpRichard MacCutchan1-Oct-12 0:44 
AnswerRe: how to make username regex for windows forms PinmvpManfred R. Bihy2-Oct-12 3:11 
GeneralRe: how to make username regex for windows forms Pinmembersariqkhan2-Oct-12 8:22 
GeneralRe: how to make username regex for windows forms PinmvpManfred R. Bihy4-Oct-12 0:10 
GeneralRe: how to make username regex for windows forms Pinmembersariqkhan4-Oct-12 0:27 
GeneralRe: how to make username regex for windows forms PinmvpManfred R. Bihy4-Oct-12 1:44 
Above you said: "I mean allowing only one dot dash or underscore in a row?".
The meaning of "in a row" is that the characters consecutively follow one another with out other characters in between.
If you meant that there should be at most one "-" and at most one "." and at most one "_", you should have said so. Smile | :)
 
I don't think this is possible to achieve using regular expressions. You'd have to iterate over the characters and increment a counter for each of the three characters "-", "." and "_". As soon a one of the counters is greater than one the check already failed and you don't need to use the regulare expression.
 
Regards,
 
Manfred
"I had the right to remain silent, but I didn't have the ability!"
Ron White, Comedian


GeneralRe: how to make username regex for windows forms Pinmembersariqkhan4-Oct-12 1:55 
GeneralRe: how to make username regex for windows forms PinmvpManfred R. Bihy4-Oct-12 2:01 
GeneralRe: how to make username regex for windows forms PinmemberPeter_in_27804-Oct-12 3:51 
GeneralRe: how to make username regex for windows forms PinmemberPeter_in_27802-Oct-12 13:36 
Question[SOLVED] C Code Parsing [modified] PinmemberRichard Andrew x645-Sep-12 17:03 
AnswerRe: C Code Parsing PinmemberPeter_in_27805-Sep-12 17:45 
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QuestionRename File Name Help Pinmembertoikken5-Aug-12 19:56 
AnswerRe: Rename File Name Help PinmemberBernhard Hiller6-Aug-12 0:11 
GeneralRe: Rename File Name Help [modified] Pinmembertoikken6-Aug-12 16:05 
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QuestionSwap two values based on pattern Pinmemberbiop.codeproject2-Aug-12 18:19 
AnswerRe: Swap two values based on pattern PinmemberPeter_in_27802-Aug-12 20:02 
GeneralRe: Swap two values based on pattern Pinmemberbiop.codeproject3-Aug-12 0:43 
GeneralRe: Swap two values based on pattern PinmemberPeter_in_27803-Aug-12 1:08 
GeneralRe: Swap two values based on pattern Pinmemberbiop.codeproject5-Aug-12 17:09 
GeneralRe: Swap two values based on pattern [modified] Pinmemberbiop.codeproject5-Aug-12 18:12 

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