sourcegit/src/UI/Apply.xaml

<UserControl x:Class="SourceGit.UI.Apply"
             x:Name="me"
             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" 
             xmlns:helpers="clr-namespace:SourceGit.Helpers"
             xmlns:converters="clr-namespace:SourceGit.Converters"
             mc:Ignorable="d" 
             Height="192" Width="500">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="32"/>
            <RowDefinition Height="16"/>
            <RowDefinition Height="32"/>
            <RowDefinition Height="32"/>
            <RowDefinition Height="32"/>
            <RowDefinition Height="16"/>
            <RowDefinition Height="32"/>
        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="150"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <Grid.Resources>
            <converters:InverseBool x:Key="InverseBool"/>
        </Grid.Resources>

        <Label Grid.Row="0" Grid.ColumnSpan="2" FontWeight="DemiBold" FontSize="18" Content="Apply Patch"/>

        <Label Grid.Row="2" Grid.Column="0" HorizontalAlignment="Right" Content="Patch File :"/>
        <Grid Grid.Row="2" Grid.Column="1">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="28"/>
            </Grid.ColumnDefinitions>

            <TextBox 
                Grid.Column="0"
                x:Name="txtPatchFile"
                Height="24"
                helpers:TextBoxHelper.Placeholder="Select .patch file to apply">
                <TextBox.Text>
                    <Binding Path="PatchFile" ElementName="me" UpdateSourceTrigger="PropertyChanged" Mode="TwoWay">
                        <Binding.ValidationRules>
                            <helpers:PatchFileRequiredRule/>
                        </Binding.ValidationRules>
                    </Binding>
                </TextBox.Text>
            </TextBox>

            <Button Grid.Column="1" Width="24" Height="24" Click="FindPatchFile" Padding="0" BorderThickness="1" Style="{StaticResource Style.Button.Bordered}">
                <Path Width="14" Style="{StaticResource Style.Icon}" Data="{StaticResource Icon.Folder}"/>
            </Button>
        </Grid>

        <Label Grid.Row="3" Grid.Column="0" HorizontalAlignment="Right" Content="Whitespace :"/>
        <ComboBox x:Name="combWhitespaceOptions" Grid.Row="3" Grid.Column="1" VerticalAlignment="Center" IsEnabled="{Binding ElementName=chkIgnoreWhitespace, Path=IsChecked, Converter={StaticResource InverseBool}}">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" Height="20">
                        <Label Content="{Binding Name}" Padding="4,0"/>
                        <Label Content="{Binding Desc}" Foreground="{StaticResource Brush.FG2}" FontSize="11" Padding="4,0"/>
                    </StackPanel>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>

        <CheckBox Grid.Row="4" Grid.Column="1"
                  x:Name="chkIgnoreWhitespace"
                  IsChecked="True"
                  Content="Ignore whitespace changes"/>

        <Grid Grid.Row="6" Grid.ColumnSpan="2">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="80"/>
                <ColumnDefinition Width="8"/>
                <ColumnDefinition Width="80"/>
            </Grid.ColumnDefinitions>

            <Button Grid.Column="1" Click="Start" Content="SURE" Style="{StaticResource Style.Button.AccentBordered}"/>
            <Button Grid.Column="3" Click="Cancel" Content="CANCEL" Style="{StaticResource Style.Button.Bordered}"/>
        </Grid>
    </Grid>
</UserControl>