WPF System.WIndows.Forms add wpf control

1.New System.Windows.Forms project;

2.Add reference C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\WindowsFormsIntegration.dll

3.Drag ElementHost from Toolbox to WindowsForms

4.Add reference PresentationCore.dll;

Add reference PresentationFramework.dll;

5.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Controls;
using System.Windows.Forms;
using System.Windows.Forms.Integration;
using System.Windows.Media;

namespace WindowsFormsApp1
{    
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Expander expander = new Expander();
            expander.Background = new SolidColorBrush(System.Windows.Media.Color.FromRgb(255,0,0));   
            expander.Header = "WPF Expander";

            WindowsFormsHost host = new WindowsFormsHost();
            host.Child = new MonthCalendar();
            expander.Content = host;
            label1.Text = "WPF expander control in System.Windows.Forms";
            elementHost1.Child= expander;
        }
    }
}

. Both Color types have a FromArgb static method, so you can create one Color from the other by passing this method the A, R, G, and B values from the source Color.
. To get a Windows Forms font size from a WPF font size, multiply the value by 0.75. To get a WPF font size from a Windows Forms font size, divide the value by 0.75.