Check for null before you run your if statement... From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Kratz Fredrik - SBF Sent: Wednesday, November 11, 2009 10:35 AM To: MapGuide Users Mail List Subject: SV: [mapguide-users] Need help with IF-statment in Tool Tip
BYGGINV_2 is a string, the name of a document (if existing). Från: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] För Martin Morrison Skickat: den 11 november 2009 14:43 Till: MapGuide Users Mail List Ämne: RE: [mapguide-users] Need help with IF-statment in Tool Tip Is your BYGGINV_2 an integer/double/etc field or is it a string? As far as I know length only works on a string. Martin From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Kratz Sent: Wednesday, November 11, 2009 8:41 AM To: mapguide-users@lists.osgeo.org Subject: SV: [mapguide-users] Need help with IF-statment in Tool Tip Here is the error message: The expression is invalid Error: Argument types for function 'If' are mismatched. Click here to move the cursor to the error (1)#1 Error: Result types are mismatched: the validation operation expected 'Text' but the expression returned 'Unknown' It’s the same whether I use If ( LENGTH(BYGGINV_2) > 0, BYGGINV_2 , 0) or If ( LENGTH(BYGGINV_2) > 0, BYGGINV_2 , ' ' ) I get the feeling that the problem is LENGTH(BYGGINV_2) > 0 but I cant understand how ? Från: JamesDudden [via OSGeo.org] [mailto:[hidden email]<http://n2.nabble.com/user/SendEmail.jtp?type=node&node=3986496&i=0>] Skickat: den 11 november 2009 13:31 Till: Kratz Fredrik - SBF Ämne: Re: [mapguide-users] Need help with IF-statment in Tool Tip What does the error say? It normally points to which bit is wrong. Is it the empty string? Try putting a 0 instead like this: If ( LENGTH(BYGGINV_2) > 0, BYGGINV_2 , 0) Kratz wrote: Hi! I need help writing a correct string with an if-statement. Trying to determine whether an attribute contains any value(string) or not. Why doesn't this string work? If ( LENGTH(BYGGINV_2) > 0, BYGGINV_2 , ' ' ) Default: If ( [condition], [trueValue], [falseValue] ) Software Matters<http://www.software-matters.co.uk> - Bespoke Database<http://www.software-matters.co.uk/bespoke-database-design.html> and Software Solutions ________________________________ View message @ http://n2.nabble.com/Need-help-with-IF-statment-in-Tool-Tip-tp3985605p3986117.html To unsubscribe from Need help with IF-statment in Tool Tip, click here. ________________________________ View this message in context: SV: [mapguide-users] Need help with IF-statment in Tool Tip<http://n2.nabble.com/Need-help-with-IF-statment-in-Tool-Tip-tp3985605p3986496.html> Sent from the MapGuide Users mailing list archive<http://n2.nabble.com/MapGuide-Users-f1803227.html> at Nabble.com.
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