MainWindow.xaml

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<Window x:Class="WinTraceCmd.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:WinTraceCmd"
        mc:Ignorable="d"
        Title="WinTraceCmd" Height="450" Width="800" Background="DimGray">
    <Grid>
        <StackPanel HorizontalAlignment="Center">
            <StackPanel HorizontalAlignment="Center" Height="260">
                <ToggleButton x:Name="TraceButton" Content="Start Trace" Checked="OnStartTrace" Unchecked="OnStopTrace" />

                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                    <TextBox x:Name="EtlPathBox" MinWidth="500" TextChanged="OnEtlPathChanged" />
                    <Button  x:Name="EtlPathButton" Content="Browse" Click="OnEtlPathButtonClick" />
                </StackPanel>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                    <TextBox x:Name="SteamVrPathBox" MinWidth="500" TextChanged="OnSteamVrPathChanged" />
                    <Button  x:Name="SteamVrPathButton" Content="Browse" Click="OnSteamVrPathButtonClick" />
                </StackPanel>
                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                    <TextBox x:Name="GpuvisPathBox" MinWidth="500" TextChanged="OnGpuvisPathChanged" />
                    <Button  x:Name="gpuvisPathButton" Content="Browse" Click="OnGpuvisPathButtonClick" />
                </StackPanel>
            </StackPanel>
            <ScrollViewer x:Name="LogScrollViewer" Margin="0,10,0,20" HorizontalScrollBarVisibility="Auto" Height="142" Width="672" RenderTransformOrigin="0.507,0.681" Background="White">
                <TextBlock x:Name="LogBlock" TextWrapping="Wrap"   />
            </ScrollViewer>
        </StackPanel>
    </Grid>
</Window>