How to select multiple listview items using checkboxes

[srinivas]

Hi,

I am having a listview with 4 list items.Each item consists of a check box and when ever i am clicking the checkbox it is selecting the list view.But again when i click on another list view item's checkbox it is selecting and the first listview item is deselecting.
What i want is i want all the listviews selected when the check box is selected.
How can i able to do that 

Please provide me sample or an example 


Thanks and Regards,
Srinivas