good day sirs and madam,

i badly needed help.. i have this regular expression

^(?!.*--)[A-Za-z\d-]+$

it accepts alphanumeric character optionally a dash (single dash only, not consecutive dash) for exampl:

it accepts:

12a-3c-4f3fg

12ertgg2

1-2-3-3-4-3

dffgsfg

d-f-f-g-s-f-g

it does not accept:

12-3c-4f&3fg

12e%rt-gg2

d--f-f-g-s-f-g

1-2-3-3-4--3

now i have problem, i cant find any in the .net that accepts the above valid expression with space-a non consecutive space. meaning the it needs to accept alphanumeric with optionally a non-consecutive dash and optionally a non-consecutive space.

can someone help please.