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client side vbScript formcheck for multiple select box

Posted on 2002-07-08
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Last Modified: 2008-02-01
I need to put the following javascript fromcheck into client side vbscript and I'm not sure of the syntex.
Basically the code needs to check that not more than 10 keywords have been selected before the form can be posted

for(i=0;i<document.form1.Keywords.length;i++)            
{      
  if(document.form1.Keywords[i].selected) iCount++;
             }
   if(iCount > 10)
              {
   mess = mess + "\nA maximum of 10 keywords";
            }    

}

Thanks
0
Comment
Question by:lambsan
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4 Comments
 
LVL 2

Accepted Solution

by:
KAbbott earned 60 total points
ID: 7138084
I think the best way to do this would be to create a hidden form value:

<input type="hidden" name="MyCount" value="">

Then
function YourFunction(){

for(i=0;i<document.form1.Keywords.length;i++)            
{      
 if(document.form1.Keywords[i].selected) iCount++;
            }
  if(iCount > 10)
             {
  mess = mess + "\nA maximum of 10 keywords";
  return false;
           }
 document.form1.MyCount = iCount;
 return true;
}

}
<form blah blah blah onSubmit="return YourFunction()">

In the server-side code just put:

If Request.Form("MyCount") > 10 Then

Response.Redirect("errorpage.asp")
'Or whatever

End If


Hope this helps

p.s can't remember if document.form1.MyCount should be document.form1.MyCount.value     give both a try if one doesn't work.
0
 

Author Comment

by:lambsan
ID: 7138482
Thanks for that,
Unfortunetly I don't think I can use this technique, as I'm using a clientside vbscript function to assign permissions to network folders but beofre I call this function, I need to check the form, both need to run before the form is submitted.

For Each strUser in Document.VolumeDetails.AssignUser
     MsgBox "Selected Users:" & Document.VolumeDetails.AssignUser.Value
     
Next
 I've put this together but it displays the message box for every item in the list (not every selected item) and then it just shows the first selected item,
Its driving me mad!

0
 

Author Comment

by:lambsan
ID: 7138532
Thanks for that,
Unfortunetly I don't think I can use this technique, as I'm using a clientside vbscript function to assign permissions to network folders but beofre I call this function, I need to check the form, both need to run before the form is submitted.

For Each strUser in Document.VolumeDetails.AssignUser
     MsgBox "Selected Users:" & Document.VolumeDetails.AssignUser.Value
     
Next
 I've put this together but it displays the message box for every item in the list (not every selected item) and then it just shows the first selected item,
Its driving me mad!

0
 

Author Comment

by:lambsan
ID: 7142804
Thanks for your suggestion,
I finally figured it out which is below in case anyone ever needs it

For Each objKeyword in TheForm.Keywords
     If objKeyword.selected Then
          i = i + 1
     End If
Next
If i > 10 Then
     strMessage = strMessage &  vbcrlf & "    -  A maximum of 10 Keywords"
     blnDataMissing = True
End If
0

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