Login.razor

<AuthorizeView>
    <Authorized>
        @{
            navMgr.NavigateTo("/");
        }
    </Authorized>
    <NotAuthorized>
        <MatCard class="mat-card">
            <MatCardContent>
                <div class="mat-card-content">
                    <MatHeadline6 class="mat-card-clean-margin">
                        E-mail
                    </MatHeadline6>
                    <MatTextField Class="mat-card-field" @bind-Value="Username"></MatTextField>
                    <MatHeadline6 class="mat-card-clean-margin">
                        Password
                    </MatHeadline6>
                    <MatTextField Class="mat-card-field" Type="password" @bind-Value="Password"></MatTextField>
                </div>

            </MatCardContent>
            <MatCardActions Class="mat-card-action">
                <MatButton Raised="true"
                           OnClick="@(async args => await AuthenticateUser())">Login</MatButton>
            </MatCardActions>
        </MatCard>
    </NotAuthorized>
</AuthorizeView>