The Window component for Blazor directs a user's attention to a particular activity in your application, such as entering data or viewing information. Consider using a jQWidgets Window when you want greater customization, you want to block the user interface outside the window, or when you want to retrieve a DialogResult and other data from the popup window. jQWidgets Window can be displayed as a modal dialog window that blocks user interaction with the underlying user interface or as a standard window without blocking the web page's user interface.
Refer to Blazor Getting Started.