: Ensure your project targets .NET Framework 4.0 or higher , as recent versions of the toolkit do not support older frameworks.
: If you download the DLLs manually, right-click References in your project, select Add Reference , and browse to the extracted AjaxControlToolkit.dll . Download Ajax Control Toolkit zip
Browse to the AjaxControlToolkit.dll to populate the list with controls like CalendarExtender , Accordion , and ModalPopupExtender . ⚠️ Security & Versioning Note : Ensure your project targets
: Since 2014, DevExpress has maintained the toolkit. You can find installer versions and documentation on the DevExpress AJAX Control Toolkit page. 🛠 Installation & Setup right-click References in your project
: To see the controls in your Visual Studio Toolbox: