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How do you check if a textbox is empty in SSRS 2008? I've tried this code and it doesn't work.
IIF(ReportItems!txtCountVolunter.Value = "", false, true)
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How to check if a parameter is NULL in SSRS? The IsNothing() function returns True if the Paramter value is NULL , otherwise it will return FALSE.
Functions are almost always used at some point within an expression. A particular function we are going to touch on in this article is called IsNothing. This function will let you inspect the value of an object to find out if it is NULL or not.
If we are getting the data from a Database, we can use ISNull or COALESCE function to replace Null values with values we would like. But if we want to replace the Null/Blank values in SSRS Report, we need to use IIF and Isnothing functions in expressions.
Try the following:
=IIF(Len(ReportItems!txtCountVolunteer.Value) <= 0, true, false)
You should use this expression
=IIF(IsNothing(Fields!UserEmail.Value) OR Fields!UserEmail.Value = "",
"Empty", "Not Empty")
The first: IsNothing(Fields!UserEmail.Value) checks if the field value is NULL The second: Fields!UserEmail.Value = "" checks of the filed value is blank ""
So you need both of them in order to check if the value is either null or empty.
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Check for null
=IIF(IsNothing(ReportItems!txtCountVolunteer.Value),true, false)
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