https://www.dotnetzone.gr:443/cs/blogs/kbadas/archive/2014/12/22/creating-an-asynchronous-select-control.aspxEveryone knows the basic select element that is the HTML equivalent to .NET's DropDownList control. Imagine an HTML select containing one hundred or more elements. This would take much time to send and much HTML text to keep your data. Let alone SEO issueselCommunityServer 2.1 SP3 (Build: 20423.1)