Question

syntax for changing graphic based on whether a text field is null or not

Asked by: Superman_

I hope this isn't as complicated as I'm thinking it is.  Ideally I will have to evaluate 5-6 different fields for null values.  What I am looking for is the syntax in how to evaluate a field.  If the txt field is null, the associated graphic beside it does nothing.  If the field contains data, I would like a graphic to change. I have a two graphics for each of the segments that will be evaluated. A "blank" and a "filled" version. Basically, if nothing is entered, a blank graphic will be default.  If it is not, it will change to a shaded in version of the empty one.  

Any help would be great.

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Asked On
2008-02-25 at 10:11:50ID23191020
Tags

Business Objects

,

Crystal Reports 11

Topics

Crystal Reports Software

,

Graphics

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Answers

 

by: BriCrowePosted on 2008-02-25 at 10:42:26ID: 20978040

create suppress formula(s) for your graphics

formula = IsNull({txtfield}) //suppress if value is NULL

 

by: Superman_Posted on 2008-02-25 at 11:01:43ID: 20978201

Sorry for being such a knucklehead, can you give me an example please?

 

by: Superman_Posted on 2008-02-27 at 11:00:42ID: 20997160

Ok, let me rephrase it, I'm an idiot, so things need to be spelled out.  I'm not quite following how several formulas will for each graphic will know how to change to its corresponding "filled" version.  Doesn't each formula need to specify what the existing graphic is and what the new one will be if not null?

 

by: BriCrowePosted on 2008-02-27 at 11:08:23ID: 20997238

Instead of designating the content of a single image control you will need two separate images  either superimposed (which you will show/suppress depending on the situation) or in separate detail sections (you would show/suppress the entire section).

I hope that makes more sense.

 

by: Superman_Posted on 2008-02-27 at 11:26:07ID: 20997389

I think it would have to be superimposed.  Let me explain further what I'm trying to do.  Picture a human body divide up into 5 sections or graphics: head, chest, torso, arms and legs.   I need them all in the same detail section so that the overall effect still looks like a human body.  If data representing one of the fields has information, like head, with information "gun shot" or something, the blank outline of the head will be a filled in head (a different graphic).  The others might not have any data, so they will remain their white outline blank graphic.  So on/off makes sense, I'm just a complete noob with actually implementing the code for something like this.

 

by: BriCrowePosted on 2008-02-27 at 14:12:25ID: 20999015

Place both the filled and empty graphics in the same place.
right click on the image -> Format Graphic...
Select thw [X+2] button to the right of Suppress
enter a formula similar to that in the first post
repeat with the opposite formula for the other graphic.

20120131-EE-VQP-002

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