how to make this validation code work

[longmatch]

I want to validate the user input for required field. I am using vbscript to validate:

if ProcedureData.Rotation.value = "" then

msgbox("Please enter rotation data&quot
validation = false
end if

But it is very strange. When I left this field empty, the messgebox came out and submission of this form failed. However we I put something in this field after receiving messages, the msgbox still came out. WHY?????

Thanks

haijun

 

[jlsmithhartfiel]

Hi!

Hope this doesn't offend you, but does the field actually have any data when it gets here?

The reason I ask, is I did this quick test & if the variable "test" is blank - error message; of not blank - no error message.

test = "xyz"
if test = "" then        
  msgbox("Please enter rotation data")
  validation = false
end if

Hope this helps,
Jessica

 

[longmatch]

I tried several times. Even though I selected one items from the combo box, or have manually input in textbox. I still got error message. I do not know why. I was trying to use isempty() or isnull method instead, have not fixed the problem yet. I will try your code to see what will be happening.

Thanks

Haiju