问题
I have a multi-valued parameter which has about 25 elements in it. If the user selects "Select All" and I use the standard (at least as far as I know) method of displaying the parameter at the top of the report:
=join(Parameters!ProductClass.Value, ",")
Rather than the the word "All" or something I get:
01,02,03,04,05,06,07,08,09,10,11,12,14,15,16,17,18,19,20,21,22,25,30,31,98,99
There isn't a better way to handle this?
回答1:
Count the number of values selected and compare it to the total number of records in the data set that populates the parameter.
=IIF(Parameters!ProductClass.Count = Count(Fields!CaseSensitiveFieldName.Value, "CaseSensitiveDataSetName"), "All", Join(Parameters!ProductClass.Value, ","))
来源：https://stackoverflow.com/questions/3480463/displaying-multi-value-parameters