If you used NuGet or a manual ZIP download, the controls may not appear in your toolbox by default. To add them manually:
You can obtain the AJAX Control Toolkit via two main methods, depending on whether you need a global installation for Visual Studio or a project-specific reference. download the ajax control toolkit
Once you have downloaded the toolkit, you must integrate it into your development environment to use its drag-and-drop features. 1. Adding to the Visual Studio Toolbox If you used NuGet or a manual ZIP
: The most efficient way to add the toolkit to a modern project is via the NuGet Gallery . Using the Package Manager Console in Visual Studio, run: Install-Package AjaxControlToolkit This ensures you have the latest version (currently 20.1.0) and manages all necessary dependencies automatically. : For developers who want the controls to
: For developers who want the controls to appear automatically in their Visual Studio Toolbox, DevExpress provides a dedicated installer. This installer supports versions of Visual Studio up to 2019. How to Install and Configure the Toolkit
Get Started with the AJAX Control Toolkit (C#) - Microsoft Learn