Common Partial postback
Common_PartialPostback_VBNet\SimplePartialPostback.aspx.vb
' Copyright 2010 ESRI
' 
' All rights reserved under the copyright laws of the United States
' and applicable international laws, treaties, and conventions.
' 
' You may freely redistribute and use this sample code, with or
' without modification, provided you include the original copyright
' notice and use restrictions.
' 
' See the use restrictions.
' 

Imports Microsoft.VisualBasic
Imports System
Public Partial Class SimplePartialPostback
  Inherits System.Web.UI.Page
  ' Fires when the Get Server Time button is clicked
  Protected Sub Button1_Click(ByVal sender As Object, ByVal eventArgs As System.EventArgs)
    ' Update the server time label text with the current time on the server.  Since
    ' the label is in an UpdatePanel, nothing more needs to be done to update the
    ' text on the client asynchronously.
    Label1.Text = System.DateTime.Now.ToString()

    ' Get the client id of the control that initiated the partial postback just to 
    ' show how this can be done.
    Dim id As String = ScriptManager1.AsyncPostBackSourceElementID
  End Sub
End Class