Ajax label not updating


22-Jan-2018 06:20

The name of the view should be the same as the one used in the The idea here is to reload the partial view on the page when the user selects a different category from the drop down list.

At the bottom of you master page, below the html, add the following javascript code: NOTE: The javascript code can and should live in an external file, but, for the sake of simplicity, I placed it inline. What this little piece of code does is pull the value of the category Id from the drop down, execute a call to the controller and then update the content of the div containing the partial view with the new data.

This means putting the markup files and the java files next to one another.

It is possible to alter this behavior, but that is beyond the scope of this example.

They allow you to update only a part of the DOM without having to perform a full page refresh or a postback.

Using this approach, the controller can push a nice object model back to the partial view instead of Json and we can take advantage of Razor and/or scaffolding for data presentation while enhancing the whole user experience.

I also added a label that will be updated by the event raised by the textbox.

I thought that updating an Update Panel from javascript was one of the most frequently asked question about ASP. The first article explains a very nice way to trigger the update of an Update Panel from Java Script, while the other two are very detailed overviews on the internals of how an Update Panel is updated.

NET Ajax, but even looking around a lot I didn't find a clean and polished solution for what should be a common task. NET Ajax extender for such a simple task, but after a few hours of Google-ing, I found a few nice articles on Ben Rush's blog, which is a very valuable source of knowledge on the internals of ASP. The only thing you need to do to refresh from javascript is to register a Button (hidden via CSS) Click event as async trigger for an Update Panal and then call the following method from your javascript method: Yes, that easy. But in my page I also had to pass a value to the Update Panel, so the button was not enough.

If you run this code in your application (download the Quickstart project and copy/paste the code in the homepage for a quick experience).

ajax label not updating-14

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The page gets fully refreshed with each link click.This example shows you how to use Wicket’s Ajax behaviors and components by building a simple counter that updates through Ajax link clicks.In all the Wicket examples, you have to put all files in the same package directory.This way we can reference the label in the event handler of the link component.



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