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+ <Entry DisplayName="Structs"> + <Entry.Match> + <Kind Is="Struct" /> + </Entry.Match> + <Entry.SortBy> + <Access /> + </Entry.SortBy> + </Entry> + <Entry DisplayName="Classes"> + <Entry.Match> + <Kind Is="Class" /> + </Entry.Match> + <Entry.SortBy> + <Access /> + </Entry.SortBy> + </Entry> + </FilePattern> +</Patterns> + UseExplicitType + UseVarWhenEvident + UseVarWhenEvident + False + <Policy Inspect="True" Prefix="" Suffix="" Style="aaBb" /> + <Policy Inspect="True" Prefix="" Suffix="" Style="AaBb" /> + <Policy Inspect="True" Prefix="" Suffix="" Style="AaBb" /> + No + True + PackageReference + True + True + True + True + True + True + True + True + True + True + True \ No newline at end of file diff --git a/Product.cs b/Product.cs index f68c8c9..3145062 100644 --- a/Product.cs +++ b/Product.cs @@ -2,74 +2,73 @@ namespace Events { - /// - /// Класс должен описывать представление о товаре. - /// В рамках лабораторной работы должен являться - /// источником события - /// - class Product - { + /// + /// Класс должен описывать представление о товаре. + /// В рамках лабораторной работы должен являться + /// источником события + /// + internal class Product + { + /// + /// Наименование + /// + private String _name; - #region Variables - /// - /// Наименование - /// - private string name; - /// - /// Стоимость - /// - private decimal price; + /// + /// Стоимость + /// + private Decimal _price; - #endregion + public Product(String name, Decimal price) + { + Name = name; + Price = price; + } - #region Properties + /// + /// Возникает, когда имя продукта было изменено. + /// + public event EventHandler NameChanged; - /// - /// Наименование - /// - public string Name - { - get { return name; } - set - { - name = value; - /* - * TODO #4 Инициировать уведомление об - * изменении наименования - */ - } - } - /// - /// Стоимость - /// - public decimal Price - { - get { return price; } - set - { - price = value; - /* - * TODO #5 Инициировать уведомление об - * изменении стоимости - */ - } - } + /// + /// Возникает, когда цена продукта была изменена. + /// + public event EventHandler PriceChanged; - #endregion + /// + /// Наименование + /// + public String Name + { + get => _name; + set + { + if (_name == value) + return; - #region Events + String oldName = _name; - /* - * TODO #3 Добавить определение событий - */ + _name = value; + NameChanged?.Invoke(this, new ProductEventArgs(oldName, _name, _price, _price)); + } + } - #endregion + /// + /// Стоимость + /// + public Decimal Price + { + get => _price; + set + { + if (_price == value) + return; - public Product(string name, decimal price) - { - Name = name; - Price = price; - } + Decimal oldPrice = _price; - } -} + _price = value; + PriceChanged?.Invoke(this, new ProductEventArgs(_name, _name, oldPrice, _price)); + } + } + } +} \ No newline at end of file diff --git a/ProductEventArgs.cs b/ProductEventArgs.cs index a79a6d6..a74926c 100644 --- a/ProductEventArgs.cs +++ b/ProductEventArgs.cs @@ -1,18 +1,43 @@ -namespace Events +using System; + +namespace Events { - /// - /// Класс, который служит для передачи аргументов - /// в обработчик событий, возникающих в классе - /// Product - /// - /* - * TODO #1 Закончить определение класса ProductEventArgs - */ - class ProductEventArgs - { - /* - * TODO #2 Добавить определение необходимых компонент - * класса ProductEventArgs - */ - } -} + /// + /// Класс, который служит для передачи аргументов + /// в обработчик событий, возникающих в классе + /// Product + /// + internal class ProductEventArgs : EventArgs + { + public readonly String OldName; + public readonly String NewName; + public readonly Decimal OldPrice; + public readonly Decimal NewPrice; + + public ProductEventArgs(String oldName, String newName, Decimal oldPrice, Decimal newPrice) + { + OldName = oldName; + NewName = newName; + OldPrice = oldPrice; + NewPrice = newPrice; + } + + /// + /// Определяет, изменилось ли имя продукта. + /// + public Boolean IsNameChanged => OldName != NewName; + + /// + /// Определяет, изменилась ли цена продукта. + /// + public Boolean IsPriceChanged => OldPrice != NewPrice; + + public override String ToString() + { + String nameDiff = IsNameChanged ? $"{OldName} -> {NewName}" : "unchanged"; + String priceDiff = IsPriceChanged ? $"{OldPrice} -> {NewPrice}" : "unchanged"; + + return $"Name: {nameDiff}, Price: {priceDiff}"; + } + } +} \ No newline at end of file diff --git a/Program.cs b/Program.cs index b9247f7..e67d9de 100644 --- a/Program.cs +++ b/Program.cs @@ -1,37 +1,31 @@ -namespace Events +using System; + +namespace Events { - class Program - { - internal Product Product - { - get - { - throw new System.NotImplementedException(); - } + internal static class Program + { + private static void Main(String[] args) + { + Product product = new Product("Some product name", 0); - set - { - throw new System.NotImplementedException(); - } - } + product.NameChanged += ProductOnNameChanged; + product.PriceChanged += ProductOnPriceChanged; - static void Main(string[] args) - { - Product product = new Product("Some product name", 0); - - /* - * TODO #6 Назначить обработчики событий в текущем контексте - */ + Console.WriteLine("Changing name"); + product.Name = "Iron plates"; - /* - * TODO #7 Выполнить с экземпляром класса Product действия, - * приводящие к возникновению описанных Вами событий - */ - } + Console.WriteLine("Changing price"); + product.Price = 42; + } - /* - * TODO #8 Добавить определение обработчиков событий - */ + private static void ProductOnPriceChanged(Object sender, ProductEventArgs e) + { + Console.WriteLine(e); + } - } -} + private static void ProductOnNameChanged(Object sender, ProductEventArgs e) + { + Console.WriteLine(e); + } + } +} \ No newline at end of file diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs new file mode 100644 index 0000000..a71e40f --- /dev/null +++ b/Properties/AssemblyInfo.cs @@ -0,0 +1,35 @@ +using System.Reflection; +using System.Runtime.InteropServices; + +// General Information about an assembly is controlled through the following +// set of attributes. Change these attribute values to modify the information +// associated with an assembly. +[assembly: AssemblyTitle("Events")] +[assembly: AssemblyDescription("")] +[assembly: AssemblyConfiguration("")] +[assembly: AssemblyCompany("")] +[assembly: AssemblyProduct("Events")] +[assembly: AssemblyCopyright("Copyright © 2019")] +[assembly: AssemblyTrademark("")] +[assembly: AssemblyCulture("")] + +// Setting ComVisible to false makes the types in this assembly not visible +// to COM components. If you need to access a type in this assembly from +// COM, set the ComVisible attribute to true on that type. +[assembly: ComVisible(false)] + +// The following GUID is for the ID of the typelib if this project is exposed to COM +[assembly: Guid("E1D98F4B-A176-4F33-BFAE-BE21ECF6DABB")] + +// Version information for an assembly consists of the following four values: +// +// Major Version +// Minor Version +// Build Number +// Revision +// +// You can specify all the values or you can default the Build and Revision Numbers +// by using the '*' as shown below: +// [assembly: AssemblyVersion("1.0.*")] +[assembly: AssemblyVersion("1.0.0.0")] +[assembly: AssemblyFileVersion("1.0.0.0")] \ No newline at end of file