Internet Explorer: how replace ActiveX with modern standard browsers

One customer has ActiveX controls implementing buttons in their web customizations of third-party products that can't be modified. These buttons where integrating with other Windows application running on the same client machine of the browser. With the goal of modernizing their application platform, they asked us how to replace these ActiveX with something standard and cross-browser compatible.

The suggested solution would be to use WebSockets, that are supported starting from Internet Explorer 10, but also in Chrome, Safari and Firefox.

The solution is to develop a host application, that would need to accept connections and support Websockets. .NET 4.5 supports Websockets natively and so is strongly suggested, but also previous versions support them through 3rd party libraries on Nuget.

An example where a similar solution is implemented is the Visual Studio feature called browser linkIn this case VS acts as a websockets server on the local machine, and any browser can connect and interact with it through it.

Visual Studio 2013: how test the performance of the html UI

As new solutions are pushing more and more the html UI, with various JavaScript and AJAX calls to complicate the scenario, analyzing the performance of the UI requires new tools.

For this, in Visual Studio 2013 you can find the HTML UI Responsiveness Profiler.

Here a few links on this topic: