(nothing = 0) = true !

I have a bit type field that can have values 0, 1 and NULL in SQL database.
I want to hide an image when the value is different from 0.
The expression used in the visibility.Hidden property is
"=First(Fields!myfield.Value, "DataSet1") <>0"
And when the database value is NULL this expression returns false.
Please help !
(a French user...)I really canâ't understand why something like that does not work. I always
have to use something like the following:
=iif(Expression, 1=1, 1=0)
I hope it helps you!
> I have a bit type field that can have values 0, 1 and NULL in SQL database.
> I want to hide an image when the value is different from 0.
> The expression used in the visibility.Hidden property is
> "=First(Fields!myfield.Value, "DataSet1") <>0"
> And when the database value is NULL this expression returns false.
> Please help !
> (a French user...)
>|||thanks for you answer but it doen't help me...
I made this test : expression "= nothing = 0" in a new field, it's return
true !
"Soan" wrote:
> I really canâ't understand why something like that does not work. I always
> have to use something like the following:
> =iif(Expression, 1=1, 1=0)
> I hope it helps you!
>
> > I have a bit type field that can have values 0, 1 and NULL in SQL database.
> > I want to hide an image when the value is different from 0.
> > The expression used in the visibility.Hidden property is
> > "=First(Fields!myfield.Value, "DataSet1") <>0"
> > And when the database value is NULL this expression returns false.
> >
> > Please help !
> >
> > (a French user...)
> >|||I haven't tried it myself, but you may want to try the following:
"=(First(Fields!myfield.Value, "DataSet1") <> 0) OR
(First(Fields!myfield.Value, "DataSet1") IS DBNull.Value)"
Hope this helps.
Andy
tonio932 wrote:
> I have a bit type field that can have values 0, 1 and NULL in SQL database.
> I want to hide an image when the value is different from 0.
> The expression used in the visibility.Hidden property is
> "=First(Fields!myfield.Value, "DataSet1") <>0"
> And when the database value is NULL this expression returns false.
> Please help !
> (a French user...)
>|||When comparing with NULLs you have to use "is Nothing".
E.g. =iif(Fields!myField.Value is Nothing, True-Part, False-Part)
--
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"tonio932" <tonio932@.discussions.microsoft.com> wrote in message
news:C4E4FDE8-81C8-41E4-AE37-09671864812A@.microsoft.com...
>I have a bit type field that can have values 0, 1 and NULL in SQL database.
> I want to hide an image when the value is different from 0.
> The expression used in the visibility.Hidden property is
> "=First(Fields!myfield.Value, "DataSet1") <>0"
> And when the database value is NULL this expression returns false.
> Please help !
> (a French user...)
>|||I have noticed that when a column value from the database is null, doing
myfield.Value is the same as doing null.Value, which makes RS blow.
Andy Hardin wrote:
> I haven't tried it myself, but you may want to try the following:
> "=(First(Fields!myfield.Value, "DataSet1") <> 0) OR
> (First(Fields!myfield.Value, "DataSet1") IS DBNull.Value)"
> Hope this helps.
> Andy
>
> tonio932 wrote:
>> I have a bit type field that can have values 0, 1 and NULL in SQL
>> database.
>> I want to hide an image when the value is different from 0.
>> The expression used in the visibility.Hidden property is
>> "=First(Fields!myfield.Value, "DataSet1") <>0"
>> And when the database value is NULL this expression returns false.
>> Please help !
>> (a French user...)sql