borepin/Borepin/Borepin/Page/UserPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="Borepin.Page.UserPage"
             xmlns:converters="clr-namespace:Borepin.Converter"
             Title="Machine">
    <ContentPage.Resources>
        <ResourceDictionary>
            <converters:MachineStateColorConverter x:Key="MachineStateColorConverter"/>
            <converters:MachineStateStringConverter x:Key="MachineStateStringConverter"/>
            <converters:IsNotNullBoolConverter x:Key="IsNotNullBoolConverter"/>
            <converters:InvertBoolConverter x:Key="InvertBoolConverter"/>
        </ResourceDictionary>
    </ContentPage.Resources>
    <ContentPage.Content>
        <StackLayout Padding="20">
            <StackLayout IsVisible="{Binding IsBusy}">
                <ActivityIndicator IsRunning="{Binding IsBusy}"></ActivityIndicator>
            </StackLayout>
            <StackLayout IsVisible="{Binding IsBusy, Converter={StaticResource InvertBoolConverter}}">
                <StackLayout IsVisible="{Binding IsConnected}">
                    <Label Text="{Binding UserItem.Username}" Style="{StaticResource LabelStyle_Title}"/>
                </StackLayout>
                <Label Text="Please connect to Server" IsVisible="{Binding IsConnected, Converter={StaticResource InvertBoolConverter}}"></Label>
            </StackLayout>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>