Crunchy-Downloader/CRD/Views/Utils/ContentDialogEncodingPresetView.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             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:controls="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
             xmlns:utils="clr-namespace:CRD.ViewModels.Utils"
             x:DataType="utils:ContentDialogEncodingPresetViewModel"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="CRD.Views.Utils.ContentDialogEncodingPresetView">


    <StackPanel Spacing="10" Margin="10">

        <StackPanel IsVisible="{Binding EditMode}">
            <TextBlock Text="Edit Preset" Margin="0,0,0,5" />
            <ComboBox HorizontalContentAlignment="Center" MinWidth="210" MaxDropDownHeight="400"
                      ItemsSource="{Binding CustomPresetsList}"
                      SelectedItem="{Binding SelectedCustomPreset}">

                <ComboBox.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding PresetName}"></TextBlock>
                    </DataTemplate>
                </ComboBox.ItemTemplate>
            </ComboBox>
    </StackPanel>


    <!-- Preset Name -->
    <StackPanel>
        <TextBlock Text="Enter Preset Name" Margin="0,0,0,5" />
        <TextBox Watermark="H.265 1080p" Text="{Binding PresetName}" />
        <TextBlock Text="Preset name already used" FontSize="12" Foreground="{DynamicResource SystemFillColorCaution}" 
                   IsVisible="{Binding FileExists}" />
    </StackPanel>

    <!-- Codec -->
    <StackPanel>
        <TextBlock Text="Enter Codec" Margin="0,10,0,5" />
        <TextBox Watermark="libx265" Text="{Binding Codec}" />
    </StackPanel>

    <!-- Resolution ComboBox -->
    <StackPanel>
        <TextBlock Text="Select Resolution" Margin="0,10,0,5" />
        <ComboBox HorizontalContentAlignment="Center" MinWidth="210" MaxDropDownHeight="400"
                  ItemsSource="{Binding ResolutionList}"
                  SelectedItem="{Binding SelectedResolution}">
        </ComboBox>
    </StackPanel>

    <!-- Frame Rate NumberBox -->
    <StackPanel>
        <TextBlock Text="Enter Frame Rate" Margin="0,10,0,5" />
        <controls:NumberBox Minimum="1" Maximum="999"
                            Value="{Binding FrameRate}"
                            SpinButtonPlacementMode="Inline"
                            HorizontalAlignment="Stretch" />
    </StackPanel>

    <!-- CRF NumberBox -->
    <StackPanel>
        <TextBlock Text="Enter CRF (0-51) - (cq,global_quality,qp)" Margin="0,10,0,5" />
        <controls:NumberBox Minimum="0" Maximum="51"
                            Value="{Binding Crf}"
                            SpinButtonPlacementMode="Inline"
                            HorizontalAlignment="Stretch" />
    </StackPanel>

    <!-- Additional Parameters -->
    <StackPanel Margin="0,20,0,0">
        <TextBlock Text="Additional Parameters" Margin="0,0,0,5" />
        <StackPanel Orientation="Horizontal" Spacing="5">
            <TextBox HorizontalAlignment="Left" MinWidth="250"
                     Text="{Binding AdditionalParametersString}" />
            <Button HorizontalAlignment="Center" Command="{Binding AddAdditionalParam}">
                <StackPanel Orientation="Horizontal">
                    <controls:SymbolIcon Symbol="Add" FontSize="18" />
                </StackPanel>
            </Button>
        </StackPanel>

        <ItemsControl ItemsSource="{Binding AdditionalParameters}" Margin="0,10,0,0" MaxWidth="350">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel />
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <Border BorderBrush="#4a4a4a" Background="{DynamicResource ControlAltFillColorQuarternary}" BorderThickness="1"
                            CornerRadius="10" Margin="2">
                        <StackPanel Orientation="Horizontal" Margin="5">
                            <TextBlock Text="{Binding stringValue}" Margin="5,0" />
                            <Button Content="X" FontSize="10" VerticalAlignment="Center"
                                    HorizontalAlignment="Center" Width="15" Height="15" Padding="0"
                                    Command="{Binding $parent[ItemsControl].((utils:ContentDialogEncodingPresetViewModel)DataContext).RemoveAdditionalParam}"
                                    CommandParameter="{Binding .}" />
                        </StackPanel>
                    </Border>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>
    </StackPanel>

    </StackPanel>


</UserControl>