SSRS - Custom code - check if many ReportItems are Null. If they are then return False to the group to make invisible

Hi I want to create custom code to remove an entire group from the report if the particular ReportItem values are populated or not.
The cells are actually date fields.

What I want to do is create a custom code which will load in all 27 of the fields from ReportItems!txtDateChange1.Value through to ReportItems!txtDateChange27.Value.  

What is the best way to do this and can you provide and example?

Many thanks,
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Alexandre SimõesManager / Technology SpecialistCommented:
Sorry I don't have an SSRS at hand now but the logic should be something like setting the group visibility expression that evaluates the value of all those fields.

To do that you must use the null or not-set evaluation expression in SSRS is IsNothing.

So the final expression should be something like:
=iif(IsNothing(ReportItems!txtDateChange1.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange2.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange3.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange4.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange5.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange6.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange7.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange8.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange9.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange10.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange11.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange12.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange13.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange14.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange15.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange16.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange17.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange18.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange19.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange20.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange21.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange22.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange23.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange24.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange25.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange26.Value), False, True) And
iif(IsNothing(ReportItems!txtDateChange27.Value), False, True)

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I can't remember if you can simply do:
=IsNothing(ReportItems!txtDateChange1.Value) And
IsNothing(ReportItems!txtDateChange2.Value)And ...

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but you can try.

I can't test this and I think the show/hide logic is inverted here, but you get the idea.


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bruskhickoryAuthor Commented:
Perfect thanks
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