Repeater中的用户控件

Question

I have a usercontrol that provides voting buttons (for a SO type voting model) - it contains a private int member that retains the id of the record. Outside a repeater, it functions just fine - postbacks work, and the correct id is retained in the user control.

Inside the repeater, an itemdatabound event handler associates the correct ID with the usercontrol and it works correctly - displays the correct vote count from the database. When one of the voting buttons is pressed, though, it fires a postback to the usercontrol and the control has lost the contents of its private int member so it no longer functions.

I've tried both re-databinding the usercontrol on postback, and binding it only on the initial load - the problem is the same both ways.

How do I get the usercontrol to retain the value of that int across postbacks?

Answer 1

Have you tried putting the value in viewstate ?

public string Id{
    get
    {
        return this.ViewState["Value"] == null ?
            0 :
            (int)this.ViewState["Value"];
    }
    set { this.ViewState["Value"] = value; }
}