Mavzu: C# dasturlash tilida Dynamic Language Runtime Reja: Kirish. Asosiy qism

Namuna yaratish
C# da ExpandoObject sinfining namunasi uchun kech ulanishni yoqish uchun siz dinamik kalit so'zdan foydalanishingiz kerak. Qoʻshimcha maʼlumot olish uchun “Dinamik turdan foydalanish” boʻlimiga qarang.
Visual Basic-da dinamik operatsiyalar kechikish orqali qo'llab-quvvatlanadi. Qo'shimcha ma'lumot uchun Erta va kech bog'lash (Visual Basic) ga qarang.
Quyidagi kod misoli ExpandoObject sinfining namunasini qanday yaratishni ko'rsatadi.
dynamic sampleObject = new ExpandoObject();
Yangi a'zolarni qo'shish
ExpandoObject sinfi misollariga xususiyatlar, usullar va hodisalar qo'shishingiz mumkin. Quyidagi kod misoli ExpandoObject sinfining namunasiga yangi xususiyatni qanday qo'shishni ko'rsatadi.
C#
sampleObject.test = "Dynamic Property";
Console.WriteLine(sampleObject.test);
Console.WriteLine(sampleObject.test.GetType());
// This code example produces the following output:
// Dynamic Property
// System.String
Usullar delegatlar sifatida saqlanadigan lambda ifodalarini ifodalaydi, ular kerak bo'lganda chaqirilishi mumkin. Quyidagi kod misoli dinamik xususiyatning qiymatini oshiradigan usulni qanday qo'shishni ko'rsatadi.
class Program
{
static void Main(string[] args)
{
dynamic sampleObject = new ExpandoObject();


// Create a new event and initialize it with null.
sampleObject.sampleEvent = null;


// Add an event handler.
sampleObject.sampleEvent += new EventHandler(SampleHandler);


// Raise an event for testing purposes.
sampleObject.sampleEvent(sampleObject, new EventArgs());
}


// Event handler.
static void SampleHandler(object sender, EventArgs e)
{
Console.WriteLine("SampleHandler for {0} event", sender);
}
}
// This code example produces the following output:
// SampleHandler for System.Dynamic.ExpandoObject event.