An HttpModule is a perfect way to add an HTTP header to every request in IIS. An HttpModule is an assembly that is called on every request (and as of IIS 7 this includes non-ASPNET requests). Other uses of HttpModules include tracing, logging, and security. We have a change coming up where having an HTTP header added to certain responses will be very helpful. I thought I would share my C# code for the HttpModule and some JavaScript that will use the new HTTP header on the client to display a message.

This week I'd like to highlight another example project one of our support agents developed in response to a customer request. Group annotations are a necessary feature in any application utilizing annotations and markup. In fact, the LEADTOOLS HTML5 SDK includes support for group annotations out of the box by simply clicking and dragging with the select tool. However, this customer had a requirement to create and edit group annotations programmatically.

Here is how you create the annotations and then place them in groups. After that you can use the mouse to select, move and resize each group as if they were a single entity.