如何序列化复杂的对象并将其放入ViewState？

Question

I have an object of type List<SPSection> , the SPSection is a custom class that contains a string and a List<SPListItem> , SPListItem is a SharePoint object representing an item.

I want to store this in a ViewState , but I don't know how to do this. Is there a way to serialize this or convert it to some binary string, so that I could put it in a ViewState . Also when getting the value back from the ViewState , how can I convert it back to List<SPSection> .

Thanks

Answer 1

Don't do this. SPListItem instances cannot be retained between requests . They depend on the respective SPList instance, which in turn depends on SPWeb + SPSite , both instantiated automatically and provided through SPContext .

What you can do is retain item ID s between requests. Your custom classes need to be binary serializable, ie marked with the [Serializable] interface. You then just store your object under a given key into the view state: ViewState["MyObjects"] = myObjects; .