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You can try using the Update method of the Update Panel Control in the button click event since the update mode is set to &quot;Conditional&quot;.<br />
<br />
See the following link for details:<br />
<br />
<a href="http://msdn.microsoft.com/en-us/library/system.web.ui.updatepanel.update.aspx" rel="ugc">http://msdn.microsoft.com/en-us/library/system.web.ui.updatepanel.update.aspx</a>
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You can try using the Update method of the Update Panel Control in the button click event since the update mode is set to "Conditional".

See the following link for details:

http://msdn.microsoft.com/en-us/library/system.web.ui.updatepanel.update.aspx [http://msdn.microsoft.com/en-us/library/system.web.ui.updatepanel.update.aspx]

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<div class="content wysiwyg-content">
Hello,<br />
<br />
Background for the problem:<br />
1. &nbsp;I have an update panel in the master page.<br />
2. &nbsp;The update panel in the master page has 2 dropdown lists and a button.<br />
3. &nbsp;I have set the updatemethod to 'conditional' for this panel and the trigger to asynchronously &nbsp;postback based on the click event of the button.<br />
4. &nbsp;I have a content page with update panels with the update mode set to 'always'.<br />
<br />
Problem:<br />
When I click the button in the update panel in the master page, nothing happens - no asynchronous posbacks.<br />
<br />
Please let me know how I can resolve this issue. &nbsp;<br />
<br />
fyi: I have attached herewith a file to simply show how my page looks.<br />
<br />
Thanks for helping.<br />
<br />
<br />
&nbsp;<a href="https://filedb.experts-exchange.com/incoming/2010/11_w47/369806/ASP-q-1.doc" target="_blank" class="file-inline" title="Appearance of my page (24 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>ASP-q-1.doc</a>
</div>
</div>


ASP-q-1.doc

Hello,

Background for the problem:
1.  I have an update panel in the master page.
2.  The update panel in the master page has 2 dropdown lists and a button.
3.  I have set the updatemethod to 'conditional' for this panel and the trigger to asynchronously  postback based on the click event of the button.
4.  I have a content page with update panels with the update mode set to 'always'.

Problem:
When I click the button in the update panel in the master page, nothing happens - no asynchronous posbacks.

Please let me know how I can resolve this issue.  

fyi: I have attached herewith a file to simply show how my page looks.

Thanks for helping.


 

Asynchronous postback in master page

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.

AJAX

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).