Help w/aggregate function in Matrix

On a report we have a matrix. The data cell has the following expression:
=iif(Fields!Score.Value=0, "", Fields!Score.Value)
When we run the report, we get the following warning:
The value expression for the textbox 'Score' references a field
outside an aggregate function. Value expressions in matrix cells should be
aggregates, to allow for subtotaling.
What does this mean and how can I resolve it?
The goal it to suppress the display of zero (0). We have tried setting the
format of the data cell to be "#", but the zero is still displayed. So we
have been using expressions like the above to achieve this.
The user creating this report is using the stand-alone C# IDE with Reporting
Services. This warning prevents them from previewing the report. Another
user using VS.NET 2003 is able to preview the report despite the warning.
The report renders on our test reporting server. If we need to just ignore
the warning, how can we get the user using C# to be able to preview the
report?
Thanks,
ChrisMatrix cells are always in the scope of two groupings and you could have
multiple data rows which match the group instance values. Therefore, you
should always use aggregate functions when referencing fields in a matrix
cell (hence, a processing warning gets generated).
If you don't use an explicit aggregate function in the matrix cell, we would
implicitly use the first row's field value. I believe you actually don't
want just the first value, but rather the sum - so you should change the
expression to:
=iif(Sum(Fields!Score.Value)=0, "", Sum(Fields!Score.Value))
-- Robert
This posting is provided "AS IS" with no warranties, and confers no rights.
In your case, I believe you want
"Chris Walls" <chwalls@.community.nospam> wrote in message
news:OVqzX42OFHA.1500@.TK2MSFTNGP09.phx.gbl...
> On a report we have a matrix. The data cell has the following expression:
>
> =iif(Fields!Score.Value=0, "", Fields!Score.Value)
>
> When we run the report, we get the following warning:
>
> The value expression for the textbox 'Score' references a field
> outside an aggregate function. Value expressions in matrix cells should
> be aggregates, to allow for subtotaling.
>
>
> What does this mean and how can I resolve it?
>
>
> The goal it to suppress the display of zero (0). We have tried setting
> the format of the data cell to be "#", but the zero is still displayed.
> So we have been using expressions like the above to achieve this.
>
>
> The user creating this report is using the stand-alone C# IDE with
> Reporting Services. This warning prevents them from previewing the
> report. Another user using VS.NET 2003 is able to preview the report
> despite the warning. The report renders on our test reporting server. If
> we need to just ignore the warning, how can we get the user using C# to be
> able to preview the report?
>
>
> Thanks,
> Chris
>
>