SignInURLPage.xaml

<?xml version="1.0" encoding="utf-8"?>
<Page
    x:Class="Coder.Desktop.App.SignInURLPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Coder.Desktop.App"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <StackPanel
        Orientation="Vertical"
        HorizontalAlignment="Stretch"
        VerticalAlignment="Top"
        Padding="20"
        Spacing="10">

        <TextBlock
            Text="Coder Desktop"
            FontSize="24"
            VerticalAlignment="Center"
            HorizontalAlignment="Center"/>

        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <TextBlock
                Grid.Column="0"
                Text="Server URL"
                HorizontalAlignment="Right"
                Padding="10"/>

            <TextBox
                Name="URLTextBox"
                Grid.Column="1"
                HorizontalAlignment="Stretch"
                PlaceholderText="https://coder.example.com"
                Text="{x:Bind Path=ViewModel.Url, Mode=TwoWay}"
                />

        </Grid>

        <Button
            Content="Next"
            HorizontalAlignment="Center"
            Click="{x:Bind SignInWindow.NavigateToTokenPage}"
            Style="{StaticResource AccentButtonStyle}" />

    </StackPanel>
</Page>