c# - Conditional Grouping in RDLC -

i able conditionally group item in rdlc, i'd option not group anything. i'm not sure on how that.

here's current group expression:

<group name="groupby">     <groupexpressions>       <groupexpression>=iif(parameters!groupby.value = "c", fields!city.value, fields!state.value)</groupexpression>     </groupexpressions> </group> 

i have 3 group options i'd like:

if value "c", group city

if value "s", group state

if value "n", don't group anything

just add statement , if doesn't = c or s group unique id value.

=iif(parameters!groupby.value = "c", fields!city.value, iif(parameters!groupby.value = "s", fields!state.value, fields!someuniquevalueuniquetoallrecords.value)) 

hope helps.