How to check for null value

chuckchuck
edited 4:55AM in FastReport 4.0
I want to do something like this in Fast Script:

IF <frxdata."MyValue"> is not null then
... do something ..
END

How can I do this? Thanks for any help.

Comments

  • gordkgordk St.Catherines On. Canada.
    edited 4:55AM
    first to check for nulls the report engine setting convert nulls must be set to false.
    when convertnulls is true default
    the other option is to check for empty string or 0 for numeric fields.
  • Anu de DeusAnu de Deus Hampshire, UK
    edited 4:55AM
    gordk wrote: »
    the other option is to check for empty string or 0 for numeric fields.

    Sorry Gordon, but that is not an (inteligent) option in any language or script in the world!
  • Luis Miguel MolineroLuis Miguel Molinero
    edited 4:55AM
    I agree it's not an (intelligent) option.
    Anyway I set convert nulls to false in the engine and the code (Pascal)

    if (<DataSetName."FieldNambe"> = Null) then
    begin
    end;

    doesn't work, it doesn't detect the null values

    Any suggestion will be wellcome
  • Luis Miguel MolineroLuis Miguel Molinero
    edited 4:55AM
    Well, I found the solution: I must assign false to convertnulls option of the engine after loaded the report.

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