datasource on asp:dropdownlist is null after a postback

[AlexG2119]

I have a dropdownlist who's datasource is a ObjectCollection. I have 3 variables within the Object. The Dropdown list works fine and shows the name variable from the object. Below is some code that explains what i'm doing however I get a compiler error that the cast can't be done. int number = ((Object)dropdownlist1.selecteditem).num; For some reason i get a cannot convert a type system.web.ui.listitem to projectname.int Any ideas?

[Kannan Ar]

It is because you converted the selecteditem to an object which doesn't have the num property. What is projectname.int? projectname is a class? Can you please show the code that you use to bind the dropdownlist?