Maintaining viewstate of a repeater

Question

I have a problem whereby the viewstate of a repeater i.e. the controls within the repeater are not maintaing their viewstate.

I have the following:

Repeater

Answer 1

I don't see the point of copying the CommandArgument property to a hidden field. What you should do is to use the ItemCommand event on the Repeater and use event bubbling. You can handle the Click event on you LinkButton like this:

repeater.ItemCommand += (sender, eventArgs) => {  
   var commandArgument = eventArgs.CommandArguments;
   ImageList.Add(commandArgument);
   rptSelectedImages.DataSource = ImageList;
   rptSelectedImages.DataBind();
}