App.razor

@inject Session Session;
@inject IJSRuntime js;

<Router AppAssembly="@typeof(Program).Assembly" PreferExactMatches="@true">
    <Found Context="routeData">
        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
    </Found>
    <NotFound>
        <LayoutView Layout="@typeof(MainLayout)">
            <PageError />
        </LayoutView>
    </NotFound>
</Router>

@code {
    [Parameter]
    public Guid sSessionID { get; set; }
    [Parameter]
    public bool sExisting { get; set; }
    [Parameter]
    public string sBaseURI { get; set; }
    [Parameter]
    public string sIPAddress { get; set; }
    protected override void OnParametersSet()
    {
        Session.SessionID = sSessionID;
        Session.Existing = sExisting;
        Session.IPAddress = System.Net.IPAddress.Parse(sIPAddress);
        Session.BaseURI = new Uri(sBaseURI);
        Session.UpdateInDatabase();
        base.OnParametersSet();
    }
    protected override void OnAfterRender(bool firstRender)
    {
        if (firstRender)
        {
            js.InvokeVoidAsync("eval", "iSketchSite.Blazor.Ready();");
        }
        base.OnAfterRender(firstRender);
    }
}