In ASP.NET the traditional control model GUI is no longer used. It was replaced with a web 2.0 style JavaScript and JQuery plugin model. However, adding incremental features to existing HTML components is always required. This is why Microsoft introduced HTMLHelper and Helper extensions. Helper extension are .NET extensions that return as string typically formatted in HTML.
This article will create an extension that renders a bar chart on HTML5 Canvas. IT is bound to data source or assigned to data source from the client side.
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