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aenigmabella
aenigmabella
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How to validate a drop-down list before move on?

Mar 15, 2012 6:11 AM

Hello,

 

I want to force the user to select a value in the drop-down list before she can move on the the next  field.  for instances, I have a drop-down list A, whose default value is empty.  as the user clicks on the next field, I need to throw a warning that she needs to select the value for drop-down list A.

 

Thank you for your help.

623 Views   4 Replies   Latest reply: aenigmabella, Mar 20, 2012 7:56 AM
 
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  • dohanlon
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    1. dohanlon,
    Mar 15, 2012 6:35 PM   in reply to aenigmabella
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    On the exit event of the drop-down list, you can do a test

     

    if ( this.isNull )
{
    xfa.host.messageBox("Select item from list");
}

     

    You can place any other custom changes to the field inside the if statement to show the error.

     
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  • aenigmabella
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    2. aenigmabella,
    Mar 19, 2012 9:45 AM   in reply to dohanlon
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    Hi,

     

    Thank you.  It looks like this only validate when I click on the field without entering/selecting then move on.  Is there a way I can validate the field in a way that if I have field 1/dropdown1, then field 2/dropdown 2.  If I click on field 2, there is a message popup saying that 'field 1/dropdown 1 can't be empty.  Please make your selection before move on'.

     

    Thanks.

     
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  • dohanlon
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    3. dohanlon,
    Mar 19, 2012 10:14 AM   in reply to aenigmabella
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    Yeah it would be the same idea basically. But you just need to decide where to have the event (on enter/ on exit of which field) and then use the same code where you can as many conditions as you like. For example,

     

    if ( field1.isNull && dropdown1.isNull )

    {

    ...

    }

     

    and so on.

     
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  • aenigmabella
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    4. aenigmabella,
    Mar 20, 2012 7:56 AM   in reply to dohanlon
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    Ah, I see. Thank you.  got it working now.

     
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