ClientApiPoC/OnPremiseApp/MainWindow.xaml

<wpf:MvvmWindow x:TypeArguments="local:MainWindowViewModel"
                x:Class="ClientApiPoC.OnPremiseApp.MainWindow"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                xmlns:local="clr-namespace:ClientApiPoC.OnPremiseApp"
                xmlns:wpf="clr-namespace:ClientApiPoC.Shared.Wpf;assembly=Shared.Wpf"
                xmlns:b="http://schemas.microsoft.com/xaml/behaviors"
                mc:Ignorable="d"
                Title="On-Premise Gateway"
                Width="384"
                Height="AUTO"
                MaxHeight="144"
                ResizeMode="CanMinimize"
                WindowStartupLocation="CenterScreen">
    <Grid RowDefinitions="AUTO, AUTO"
          ColumnDefinitions="*, AUTO"
          Margin="12">

        <Grid Grid.Row="0"
              Grid.Column="0"
              RowDefinitions="AUTO, AUTO"
              ColumnDefinitions="*">

            <TextBlock Grid.Row="0"
                       Grid.Column="0"
                       Text="Base-URL:" />

            <TextBox Grid.Row="1"
                     Grid.Column="0"
                     VerticalAlignment="Center"
                     IsEnabled="{Binding UrlTextFieldEnabled}"
                     Text="{Binding ApiServiceUrl}" />

        </Grid>

        <Button Grid.Row="0"
                Grid.Column="1"
                VerticalAlignment="Stretch"
                Padding="5"
                Margin="5, 0, 0, 0"
                Content="{Binding ConnectButtonText}"
                IsEnabled="{Binding ConnectButtonEnabled}"
                Command="{Binding ToggleConnectionCommand}" />

        <Grid Grid.Row="1"
              Grid.Column="0"
              RowDefinitions="AUTO, AUTO"
              ColumnDefinitions="*"
              Margin="0, 12, 0, 0">

            <TextBlock Grid.Row="0"
                       Grid.Column="0"
                       Text="Local client data:" />

            <TextBox Grid.Row="1"
                     Grid.Column="0"
                     VerticalAlignment="Center"
                     Text="{Binding LocalClientData, UpdateSourceTrigger=PropertyChanged}">
            </TextBox>

        </Grid>

        <Button Grid.Row="1"
                Grid.Column="1"
                VerticalAlignment="Stretch"
                Padding="5"
                Margin="5, 12, 0, 0"
                IsDefault="True"
                Content="Set data"
                IsEnabled="{Binding SetLocalClientDataButtonEnabled}"
                Command="{Binding SetLocalClientDataCommand}" />

    </Grid>
</wpf:MvvmWindow>