Flex combo empty check validation ?

[Prabhat Ranjan]

Hi,
I am using flex 3.0.

I am trying to check condition if the combo box value is not selected by the user at that time it is blank on load.
So ideally it should not allow to save the data.

But i have tried every option:

1) if (ServerName.selectedIndex == -1)
2) if (ServerName.selectedItem == null)
3) if (ServerName.selectedLabel == "")
4) if (ServerName.selectedLabel == null)
5) if (ServerName.selectedItem == "")

but in none of the case flow is going inside the if condition even the combo is not selected and it is blank.

Please suggest anyone have idea on this.

Regards,
Prabhat

[Prabhat Ranjan]

I found the solution:

checking length is better option:

if(CallServerNameId.selectedLabel.length == 1){

}

it is now working.

prabhat