The Syncfusion native Blazor components library offers 70+ UI and Data Viz web controls that are responsive and lightweight for building modern web apps.
.NET PDF framework is a high-performance and comprehensive library used to create, read, merge, split, secure, edit, view, and review PDF files in C#/VB.NET.
We using essential tools. In the attached sample application, the child form calling from main form file menu(In the Toolbar). The child window form is sizable and modal dialog window. ShowInTaskbar, maximizebox, minimizebox property set to false. When the application is running, pressing alt+tab key shows the child window only with another application like internet explorer. It does Not showing the main window. That means the main window is not activated. The same using normal application (without using syncfusion, using mainmenu .net control calling the same child window showing properly). When the child window is activated, the main window is showing behind the child window.
Note: While checking the application, in windows taskbar properties Group similar taskbar buttons checkbox should not be checked.
Please find the attachment. Run the application.