Getting null value for inputfile component in the popup

Question

Hi,
My requirement is when i select the selectBooleanCheckBox a popup has to be rendered and with in that popup i have to display the inputfile component when i browse it should read the appropriate file.
But i am getting null from the input file component.
I written the code like this:-
1.First i have written a value change listener for the selectBoolenCheckBox.
2.I am rendering the popup from the valueChageEvent.
3.And i written the dialogListener for the Dialog in the popup.
and the code for the Dilog listener is:--
public void readingInputFile(DialogEvent dialogEvent) {
inputFile1.getValue();
//it is giving null value.
thanks in advance.
From
Srikanth.V

Answer 1

thanks for giving suggestion.
but i am not able to understand what meant by multipart in dialog page.
Actually,The code i written was:--
1. for selectBooleanCheckBox i written value chage listener
onChangeValue(ValueChageEvent valueChageEvent){
// in this i call the method to raise popup;
risePopUp();
2.The popup structure has follows:-
af:form --> af:popup ---> af:dialog --->af:inputfile
for this dialog i have written dilogListener:
getInputFile(DialogEvent dialogEvent){
//giving null for the inputFile,getValue();
for this dialog i don't have any multipart property
From,