What is KCallback.net Control? KCallback.net Control, the most powerful, robust, callback control available in the market today for ASP.NET with AJAX support. Written in 100% managed C# code, KCallback.net provide callback functionality in your web applications. The KCallback.net control allows developers to AJAX-enable any ASP.NET application with writing a few lines of code. It allows to update page content without postback and loss of scroll position! -------------------------------------------------------------------------------- Features AJAX AJAX (Asynchronous JavaScript And XML) enable your web applications to increase interactivity, speed and usability. ASP.NET Standard controls & 3rd Party controls KCallback.net can AJAX enable standard ASP.NET controls and 3rd party controls. Save State You can save the state of all the form controls during callback request by setting the SaveState property to true. Callback Result Callback Error Override Output Override the callback contents both on the server-side and client-side. Loading Display Disable Controls During Callback Enable Caching MultiArgument You can pass multiple arguments into the Callback event handler and process them on the server-side. Auto Callback Initiate callbacks automatically at specified intervals in milliseconds. User Control You can insert the KCallback.net control into a user control. So that you are able to run two instances of the same user control on the same page. Client-Side API Server-Side API Before and After execute client side event handler XHTML Compliance XHTML 1.0 Transitional compliant.