SSRS error from switch expression

I have a field in an SSRS report that changes what it displays based on the dataset results.  I return a VarChar field that has either an A,I or an empty string.  I use a switch statement to determine the value displayed.

If it is either A or I that is returned it displays a value from a different textbox on the report.  If an empty string is returned it displays the empty string.  It works when an A or an I is returned but it displays #error if an empty string is returned.   Here is the expression in the report:

=Switch(Fields!FOOTNOTE.Value = "A", LTrim(RTrim(ReportItems!Textbox4.Value.ToString)),Fields!FOOTNOTE.Value = "I", LTrim(RTrim(ReportItems!Textbox5.Value.ToString)),LTrim(RTrim(Fields!FOOTNOTE.Value))="","")

Open in new window

I double checked the dataset directly in SQL server and verified that it is actually an empty string being returned and not a NULL value.

Any ideas or even a workaround would be helpful in this situation.
pensiongeniusAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ValentinoVBI ConsultantCommented:
It appears to me that you've got three situations: A, I and all the rest.  There's no need to test for empty string, conditions in the Switch are processed in the order in which they are given to the function.  So the following should give you the expected outcome:

=Switch(Fields!FOOTNOTE.Value = "A", LTrim(RTrim(ReportItems!Textbox4.Value.ToString))
	,Fields!FOOTNOTE.Value = "I", LTrim(RTrim(ReportItems!Textbox5.Value.ToString))
	, true, Nothing)

Open in new window

mlmccCommented:
Another consideration is that the field rather than being an empty string is actually NULL which may be causing the issue.

If the above doesn't work you may have to test for NULL as the first test in the switch.

=Switch(IsNull(Fields!FOOTNOTE.Value ),""
        ,Fields!FOOTNOTE.Value = "A", LTrim(RTrim(ReportItems!Textbox4.Value.ToString))
	,Fields!FOOTNOTE.Value = "I", LTrim(RTrim(ReportItems!Textbox5.Value.ToString))
	, true, Nothing)
 

Open in new window


mlmcc
ValentinoVBI ConsultantCommented:
Forgot to mention: whenever you get #Error in your report you can find details about that error in the Output window (CTRL+ALT+O to open the window if needed).

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
pensiongeniusAuthor Commented:
Thanks guys, all these suggestions helped, I had already tried essentially the same solutions as you both proposed but the error persists.  Your answers helped me to realize I wasn't crazy.  The issue isn't in the report expression but in the dataset coming back from the SQL stored procedure I am using.  Not completely solved but your answers really sped up the process of eliminating potential causes.  I know now that my report is right, the data is wrong.  If I need more help I will open a new question in the SQL forum.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
SSRS

From novice to tech pro — start learning today.