Check box Checked State on Closing a form

[Prashu]

I need to know if is possible to save the state of a CheckBox in C# Silverlight ?  

Here is the scenario, if I check the CheckBoxs inside the radgridview Select Column or checkbox column,  and close the form  how to save that checkboxs checked state and , once I open the form again the CheckBoxs  will still stay checked. Is it possible to do that way. if yes how to do that  while loading the gridview data . for gridview i'm assigning Item Source as Collection that collection has Property ischecked as bool .