.net dbnull.value sqlparameter where -

-

i have probleme sql query :

i :

select * mytable [myboolfield] null

if run query, have results,

but use parameters, add :

select * mytable [mybitfield] @mybitfield

with 

new sqlparameter("@mybitfield", dbnull.value)

i have error @ @myboolfield

if pass value true or false, that's work ( " = @mybitfield")

can me ?

thanks

you can test null using is null. cannot use parameters , there wouldn't point.

dbnull.value can used when inserting or comparing values in code, not on where conditions since null not equal null.


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