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• Windows Forms
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• Windows Communication Foundation
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Gewinnspiel

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();

using System;
using System.Collections.Generic;
using System.Text;

namespace AnonymousDelegatesSample
{
    public class Book
    {
        public string Title;
        public decimal Price;
    }

    public class Person
    {
        public string Firstname;
        public string Lastname;
        public List<Book> BookList;
        public decimal Discount;
        public DiscountCalculator CalculationMethod;
    }

    public delegate decimal DiscountCalculator(decimal price);

    public class Example
    {
        private decimal CalculateDiscount(decimal price)
        {
            return price * new decimal(0.05);
        }

        public void ShowExample()
        {

            DiscountCalculator default_calc = 
                new DiscountCalculator(CalculateDiscount);
            DiscountCalculator specialcustomer_calc = 
                delegate(decimal price) 
                { 
                    return price * new decimal(0.09); 
                };

            Book book1 = new Book();
            book1.Title = "ASP.NET for dummies";
            book1.Price = new decimal(35.99);

            Book Book2 = new Book();
            Book2.Title = "C# for dummies";
            Book2.Price = new decimal(49.99);

            List<Book> bookList = new List<Book>();
            bookList.Add(book1);
            bookList.Add(Book2);

            List<Person> personList = new List<Person>();

            Person person1 = new Person();
            person1.Firstname = "Norbert";
            person1.Lastname = "Eder";
            person1.BookList = bookList;
            person1.CalculationMethod = specialcustomer_calc;
            personList.Add(person1);

            Person person2 = new Person();
            person2.Firstname = "Alf";
            person2.Lastname = "Dudldei";
            person2.BookList = bookList;
            person2.CalculationMethod = default_calc;
            personList.Add(person2);

            foreach (Person p in personList) 
            {
                decimal price = 0;
                foreach (Book b in p.BookList)
                    price += b.Price;

                p.Discount = p.CalculationMethod(price);

                Console.WriteLine(
                    String.Format("{0} {1}:t {2} discount", 
                        p.Firstname, 
                        p.Lastname, 
                        p.Discount.ToString())); 
            }

            Console.WriteLine("Press any key ...");
            Console.ReadKey();
        }
    }
}

public delegate decimal DiscountCalculator(decimal price);

DiscountCalculator default_calc = 
    new DiscountCalculator(CalculateDiscount);

DiscountCalculator default_calc = 
    new DiscountCalculatprivate decimal CalculateDiscount(decimal price)
{
    return price * new decimal(0.05);
}or(CalculateDiscount);

DiscountCalculator specialcustomer_calc = 
    delegate(decimal price) 
    { 
        return price * new decimal(0.09); 
    };

var htTemp = new Hashtable();

Hashtable htTemp = new Hashtable();