WPF-Control erstellen

<UserControl x:Class="AddinTestApp.LoginControl"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Height="118" Width="300">
    <Grid Height="120">
        <Label Height="23" HorizontalAlignment="Left" 
               Margin="9,19,0,0" Name="label1" 
               VerticalAlignment="Top" Width="120">
            Username
        </Label>
        <Label Height="23" HorizontalAlignment="Left" 
               Margin="9,40,0,0" Name="label2" 
               VerticalAlignment="Top" Width="120">
            Password
        </Label>
        <TextBox Height="21" Margin="91,21,20,0" 
                 Name="UsernameTextBox" 
                 VerticalAlignment="Top" />
        <TextBox Height="21" Margin="91,44,20,0" 
                 Name="PasswordTextBox" 
                 VerticalAlignment="Top" />
        <Button Height="23" HorizontalAlignment="Right" 
                Margin="0,77,20,0" Name="LoginButton" 
                VerticalAlignment="Top" Width="75">
            Login
        </Button>
    </Grid>
</UserControl>

Windows Formular erstellen

%programfiles%\Reference Assemblies\Microsoft\
Framework\v3.0\WindowsFormsIntegration.dll

WPF-Control zur Anzeige bringen

private void MainForm_Load(object sender, EventArgs e)
{
    ElementHost host = new ElementHost();
    LoginControl lc = new LoginControl();
    host.Child = lc;
    
    host.Dock = DockStyle.Fill;
    this.Controls.Add(host);
}

RegistryKey rk = Registry.CurrentUser;
RegistryKey rkSoftware = 
  rk.OpenSubKey("Software", true);
if (rkSoftware != null)
{
    RegistryKey rkCompany = 
      rkSoftware.OpenSubKey("Norbert Eder",true);
    if (rkCompany == null)
    {
        rkCompany = rkSoftware.CreateSubKey("Norbert Eder");
    }
    RegistryKey rkInstaller = 
      rkCompany.OpenSubKey("MySoftware", true);
    if (rkInstaller == null)
        rkInstaller = rkCompany.CreateSubKey("MySoftware");

    rkInstaller.SetValue("value1", "test1");
    rkInstaller.SetValue("value2", "test2");

    rkInstaller.Close();
    rkCompany.Close();
    rkSoftware.Close();
}
rk.Close();

RegistryKey rk = 
    Registry.CurrentUser.OpenSubKey
      (@"Software\Norbert Eder\MySoftware");
if (rk != null)
{
    string value1 = (string)rk.GetValue("value1");
    string value2 = (string)rk.GetValue("value2");

    rk.Close();
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;

namespace MoveableControlDemo
{
    public partial class MoveableBaseControl 
        : UserControl
    {
        private bool _isMoving = false;
        private int _deltaX = 0;
        private int _deltaY = 0;

        public MoveableBaseControl()
        {
            InitializeComponent();
        }

        private void MoveableBaseControl_MouseDown(
            object sender, 
            MouseEventArgs e)
        {
            _isMoving = true;
            _deltaX = e.X;
            _deltaY = e.Y;
        }

        private void MoveableBaseControl_MouseUp(
            object sender, 
            MouseEventArgs e)
        {
            _isMoving = false;
        }

        private void MoveableBaseControl_MouseMove(
            object sender, 
            MouseEventArgs e)
        {
            if (_isMoving && e.Button == MouseButtons.Left)
            {
                this.Location = new Point(
                    this.Location.X + (e.X - _deltaX), 
                    this.Location.Y + (e.Y - _deltaY)
                    );
            }
        }
    }
}

this.LogRtb.Text += "My additional log text ...";
this.LogRtb.SelectionStart = this.LogRtb.Text.Length;
this.LogRtb.ScrollToCaret();