gui/OpenFaceOffline/UI_items/CameraSelection.xaml

<Window x:Class="OpenFaceOffline.CameraSelection"
        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:OpenFaceOffline"
        mc:Ignorable="d"
        Title="Camera selection" Height="460" Width="600" ResizeMode="NoResize" WindowStartupLocation="CenterScreen" Closing="Window_Closing">
    <Grid>
        <Grid Name="camerasPanel" Visibility="Hidden">
            <Grid.RowDefinitions>
                <RowDefinition Height="auto" />
                <RowDefinition Height="320" />
                <RowDefinition Height="*" />
                <RowDefinition Height="40" />
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>

            <Label Grid.Row="0" Grid.ColumnSpan="10" HorizontalContentAlignment="Center" FontSize="20">Choose Video Source</Label>

            <Grid Grid.Row="1" Grid.Column="0" Name="ThumbnailPanel" HorizontalAlignment="Center">

                <Grid.RowDefinitions>
                    <RowDefinition Height="*" />
                    <RowDefinition Height="25" />
                </Grid.RowDefinitions>

            </Grid>
            <!--  Click="OpenFile_Click" -->
            <Button Width="150" Grid.Row="3" Height="35" Grid.ColumnSpan="10" FontSize="20" Click="Button_Click">Select camera</Button>
        </Grid>
        <Grid Name="LoadingGrid" Visibility="Visible">
            <StackPanel Grid.Row="1" Name="ProgressBar" Margin="20">
                <Label HorizontalAlignment="Center" FontSize="18">Loading Webcams</Label>
                <ProgressBar Height="20" Minimum="0" Maximum="100" Name="pbStatus" IsIndeterminate="True" />
                <Label HorizontalAlignment="Center" FontSize="18">Might take some time the first time</Label>
            </StackPanel>
        </Grid>
    </Grid>

</Window>