c# - Regex string for validating Decimal excluding zero -


i have function creates regex string validating decimal.

public static string decimalwithplaces(int wholepart, int fractionalpart) {      return @"^-?[0-9]{0," + wholepart + @"}\.[0-9]{1," + fractionalpart + @"}$"; }

could let me know how can excluding 0 this?

for example: "0", "0.0","0.00" etc should not matched.

thanks

amy's right - examples good.

however, i'm going in blind.

did want exclude zeros, or value of zero?

to exclude zeros, try , see happens.

public static string decimalwithplaces(int wholepart, int fractionalpart) {     return @"^-?[1-9]{0," + wholepart + @"}\.[1-9]{1," + fractionalpart + @"}$"; }

to exclude number zero... that's not check regex. that's value check.

in books should using 2 validation steps on value. 1 check meets precision/scale requirements per regex above, second check nonzero value.

i believe using regex 0 value thing possible. advise against it. said, if you're committed ignoring reccomendation you'll want negative lookahead regex structures.


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