kmpdfkit_demo/Demo/Examples/Compdfkit_Tools/DigitalSignature/AddCertificationControl/AddCertificationControl.xaml

<Window x:Class="Compdfkit_Tools.DigitalSignature.AddCertificationControl.AddCertificationControl"
             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:local="clr-namespace:Compdfkit_Tools.DigitalSignature.AddCertificationControl"
             mc:Ignorable="d"
             d:DesignHeight="474" d:DesignWidth="462">
    <Grid Margin="10,10,10,10">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <Label Grid.Row="0" Content="Select the type of Digital ID:" FontSize="14" FontFamily="Segoe UI" FontWeight="600" Padding="0,4,0,4" Width="187" HorizontalAlignment="Left"></Label>
        <StackPanel Grid.Row="1" Orientation="Horizontal">
            <RadioButton FontSize="16" BorderThickness="1" Margin="0,2,0,0" BorderBrush="#43474D" GroupName="ChooseCertification" VerticalAlignment="Center"></RadioButton>
            <StackPanel Orientation="Horizontal" Width="386" Height="80">
                <Image  Width="32" Height="32" Margin="0,0,0,0" VerticalAlignment="Center"></Image>
                <StackPanel Orientation="Vertical" Margin="10,0,0,0" VerticalAlignment="Center">
                    <Label Content="Use a Digital ID from a file" FontSize="14" FontFamily="Segoe UI" FontWeight="600" Padding="0,4,0,4" Width="168" HorizontalAlignment="Left" VerticalAlignment="Top"></Label>
                    <Label Content="Import an existing Digital ID that you have obtained as a file" FontSize="12" FontFamily="Segoe UI" FontWeight="400" Padding="0,4,0,4" Width="318" HorizontalAlignment="Left" VerticalAlignment="Bottom"></Label>
                </StackPanel>
            </StackPanel>
        </StackPanel>
        <StackPanel Grid.Row="2" Orientation="Horizontal">
            <RadioButton FontSize="16" BorderThickness="1" Margin="0,2,0,0" BorderBrush="#43474D" GroupName="ChooseCertification" VerticalAlignment="Center"></RadioButton>
            <StackPanel Orientation="Horizontal" Width="386" Height="80">
                <Image  Width="32" Height="32" Margin="0,0,0,0" VerticalAlignment="Center"></Image>
                <StackPanel Orientation="Vertical" Margin="10,0,0,0" VerticalAlignment="Center">
                    <Label Content="Use a Digital ID from a file" FontSize="14" FontFamily="Segoe UI" FontWeight="600" Padding="0,4,0,4" Width="168" HorizontalAlignment="Left" VerticalAlignment="Top"></Label>
                    <Label Content="Create your self-signed Digital ID" FontSize="12" FontFamily="Segoe UI" FontWeight="400" Padding="0,4,0,4" Width="318" HorizontalAlignment="Left" VerticalAlignment="Bottom"></Label>
                </StackPanel>
            </StackPanel>
        </StackPanel>
        <StackPanel Grid.Row="3" Margin="10,10,10,10">
                <TextBlock FontWeight="400" FontSize="12" FontFamily="Segoe UI" Foreground="#43474D" TextWrapping="Wrap" Background="#F2F2F2" Padding="12,10,12,10"
                           Text="A Digital ID is required to create a digital signature. The most secure Digital ID are issued by trusted Certificate authorities and are based on secure devices like smart card or token. Some are based on files."/>
                <TextBlock FontWeight="400" FontSize="12" FontFamily="Segoe UI" Foreground="#43474D" TextWrapping="Wrap" Background="#F2F2F2"/>
                <TextBlock FontWeight="400" FontSize="12" FontFamily="Segoe UI" Foreground="#43474D" TextWrapping="Wrap" Background="#F2F2F2" Padding="12,10,12,10"
                           Text="You can also create a new Digital ID, but they provide a low level of identity assurance."/>
        </StackPanel>
        <StackPanel Grid.Row="4" Orientation="Horizontal" HorizontalAlignment="Right">
            <Button Content="Cancel" Width="112" Height="32" BorderThickness="1" Margin="0,0,10,0"></Button>
            <Button Content="Continue" Width="112" Height="32" BorderThickness="1"></Button>
        </StackPanel>
    </Grid>
</Window>