The web viewer can occupy the whole browser window in full-screen mode, useful for report portals and dashboards.

Enabling full-screen. Turn on FullScreenMode in the appearance options and adjust the toolbar:
@using Stimulsoft.Report.Web;

@Html.StiNetCoreViewer(new StiNetCoreViewerOptions()
{
    Actions = { GetReport = "GetReport", ViewerEvent = "ViewerEvent" },
    Appearance = { FullScreenMode = true },
    Toolbar =
    {
        ShowFullScreenButton = false,
        DisplayMode = StiToolbarDisplayMode.Separated
    }
})
In full-screen mode the viewer fills the window and behaves like a dedicated reporting application; hiding the full-screen button and separating the toolbar make it feel built-in rather than embedded.
На скриншоте ниже Вы можете увидеть результат выполнения данного кода:

Using the Full-Screen Mode in the Viewer