ELK/Furnace/FurnaceUI/Dialog/SelectExistView.xaml

<UserControl x:Class="FurnaceUI.Client.Dialog.SelectExistView"
             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:FurnaceUI.Views.Recipes" xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:cal="http://www.caliburn.org"
             mc:Ignorable="d" 
             Height="180" Width="200" FontFamily="Segoe">
        <Grid Grid.Row="0" Grid.Column="0">
            <WrapPanel Orientation="Vertical" HorizontalAlignment="Center">
            <RadioButton x:Name="RdoNone" Content="None" Margin="15,15,15,0" Height="40" Width="130">
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="Click">
                            <cal:ActionMessage MethodName="SelectExistClick">
                                <cal:Parameter Value="None"></cal:Parameter>
                                <cal:Parameter Value="$source"></cal:Parameter>
                            </cal:ActionMessage>
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
                </RadioButton>
                <RadioButton x:Name="RdoExist" Content="Exist" Margin="15" Height="40" Width="130">
                    <i:Interaction.Triggers>
                        <i:EventTrigger EventName="Click">
                        <cal:ActionMessage MethodName="SelectExistClick">
                            <cal:Parameter Value="Exist"></cal:Parameter>
                            <cal:Parameter Value="$source"></cal:Parameter>
                            </cal:ActionMessage>
                        </i:EventTrigger>
                    </i:Interaction.Triggers>
                </RadioButton>
            <RadioButton Content="Cancel" Margin="15,0,15,15" Height="40" Width="130">
                <i:Interaction.Triggers>
                    <i:EventTrigger EventName="Click">
                        <cal:ActionMessage MethodName="SelectExistClick">
                            <cal:Parameter Value="Cancel"></cal:Parameter>
                            <cal:Parameter Value="$source"></cal:Parameter>
                        </cal:ActionMessage>
                    </i:EventTrigger>
                </i:Interaction.Triggers>
            </RadioButton>
        </WrapPanel>
        </Grid>
</UserControl>