A toolbox cannot be used as part of ASP.NET MVC, the Design View is not provided in the project, and there is no context in which a Toolbox can be used. If a WebForm is added to an MVC project, however, the Infragistics controls are loaded in the form's Design View if the toolbox is added to the MVC project.Read carefully contact me for information

As an additional note, you should add the Ultimate UI for ASP.NET controls within an .aspx file if they are used.