RDLC报表设计器清除过滤器

Question

RDLC Experts there ?? I need to clear filters with an expression

I don't want to filter if the Parameter is null or empty.. need to filter only when parameter contains a value. but i am unable to reach that similar to the code below. i used this expression in my filter. (if customer id equals to null don't filter else filter).

=IIf(Fields!Customer_ID.Value = "","", Fields!Customer_ID.Value)

Answer 1

For checking the null you are doing the wrong thing; the NULL should be checked as the =IIf(IsNothing(Fields!Customer_ID.Value),"", Fields!Customer_ID.Value) .