assets/samples/Samples/CloudAPISample/CS/View/ViewSamplePortal.xaml

<Window x:Class="Revit.SDK.Samples.CloudAPISample.CS.View.ViewSamplePortal"
                     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                     mc:Ignorable="d"
                     ResizeMode="NoResize"
                     d:DesignHeight="600" d:DesignWidth="800"
                     Height="600" Width="800">
   <Grid>
      <Grid.ColumnDefinitions>
         <ColumnDefinition Width="*" />
      </Grid.ColumnDefinitions>
      <TabControl Name="ContentTabs" />
   </Grid>
</Window>