title: UpdatePanel with Button / LinkButton doesnt work
body: <p>Im trying to resolve an issue with a button / link-button (both doesnt work).
  The problem is the following:</p>
  
  <p>I have a navigation menu where the user can choose the "tab" (view of Multiview) where he wants to be redirected to. In this menu i have some buttons / link-buttons  which should update the updatepanel. 
  But it doesnt do that - it always updates the whole page.</p>
  
  <p><strong>Some of my ASCX-Code:</strong></p>
  
  <pre><code>    &lt;div class="row"&gt;
                  &lt;label style="margin-left: 15px"&gt;Menu&lt;/label&gt;&lt;br /&gt;
                  &lt;div class="col-sm-4 col-md-3 sidebar"&gt;
                      &lt;div class="mini-submenu"&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                          &lt;span class="icon-bar"&gt;&lt;/span&gt;
                      &lt;/div&gt;
                      &lt;div class="list-group"&gt;
                          &lt;span class="list-group-item active"&gt;Woundmanagement
  
                              &lt;span class="pull-right" id="slide-submenu"&gt;
                                  &lt;i class="fa fa-times"&gt;&lt;/i&gt;
                              &lt;/span&gt;
                          &lt;/span&gt;
                            &lt;asp:Button ID="Button_1" runat="server" Text="Wundbeschreibung" CssClass="list-group-item" OnClick="nav_btn_1_Click" /&gt;
  ...
  more items in the dropdownmenu
  
  &lt;/div&gt;...
  </code></pre>
  
  <p><strong>The event which should be fired when clicking the button:</strong></p>
  
  <pre><code>protected void nav_btn_1_Click(object sender, EventArgs e)
          {
              MultiView1.ActiveViewIndex = 1;
  
          }
  </code></pre>
  
  <p>I searched for 2 hours now and tried every possible solution - <strong><em>what i tried until now:</em></strong></p>
  
  <ul>
  <li><p>Put the Button and the menu inside and outside the update panel - doesnt change the problem</p></li>
  <li><p>added PostbackTrigger</p>
  
  <pre><code>  &lt;asp:PostBackTrigger ControlID="Button_1"/&gt;
  </code></pre></li>
  </ul>
  
  <p>This way my button work, but still the page is reloaded</p>
  
  <ul>
  <li><p>then i added the asyncPostbackTrigger</p>
  
  <pre><code>  &lt;asp:AsyncPostBackTrigger ControlID="Button_1" EventName="Click"/&gt;
  </code></pre></li>
  </ul>
  
  <p>if i click the button now, nothing happens.</p>
  
  <ul>
  <li><p>i tried to add UpdateMode conditional to the updatePanel</p>
  
  <pre><code>  &lt;asp:ScriptManager ID="ScriptManager1" runat ="server"&gt; 
    &lt;/asp:ScriptManager&gt;
    &lt;asp:UpdatePanel ID="UP_Woundmanagement" runat="server" 
    UpdateMode="Conditional"&gt;
  </code></pre></li>
  <li><p>i moved the <code>&lt;Triggers&gt;</code> in front of the updatePanel and behind the updatePanel</p></li>
  <li><p>i added <code>ClientIDMode="AutoID"</code> to the page directive</p></li>
  <li><p>tried the same things with LinkButton</p></li>
  </ul>
  
  <p>I dont really know what i can further try to make it work, would be great if someone of you guys got an idea! :)</p>