title: Validation in nested UpdatePanel(s)
body: <p>I have an ASP.Net page which has several UpdatePanels. Each UpdatePanel loads an UserControl, and per UserControl, sub UserControl(s) may exists. In order to achieve partial-refresh, each sub UserControl will be carried through UpdatePanel. Those UserControls have input controls, and corresponding validator server controls. </p>
  
  <p>The problem is, validators in a sub-UserControl will also trigger the validation in its parent UserControl; however, I'd like separate validation into scopes based on UpdatePanel.
  Please kindly help.</p>
  
  <p>I'm using Visual Studio 2008 and .Net 3.5.</p>
  
  <p>Thank you.
  William</p>
  
  <p>-- EDITED ---
  E.g. </p>
  
  <p><img src="https://i.stack.imgur.com/3iWyc.png" alt="enter image description here"></p>
  
  <p>I've an UserControl called "AddableDropDown" which is a drop down list that provides the ability of adding new list item on the fly. It consists of a drop down list for illustrating the currently available items; a asp:textbox for entering the title for the new item, a asp:button for submitting the new item, and a "RequiredFieldValidator" target on the asp:textbox.</p>
  
  <p>The "AddableDropDown" will be used in different UserControl-based "web form" which has other kinds of inputs and Validators. </p>
  
  <p>The goal I'm trying to reach is separating the Validation of the AddableDropDown from each of its instances, as well as each parent control of it.</p>