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DE CSharp Keyword interface
Codex edited this page Oct 11, 2026
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Handbuch C# · Praktischer Leitfaden
Deklariert einen Typvertrag. Unterstützt Instanzmitglieder, Standardimplementierungen und statische abstrakte Mitglieder.
Speichern Sie dieses Beispiel separat als Example.cs. Führen Sie es unabhängig von den anderen Beispielen dieser Seite aus.
Example.cs:
// PROJECT-EXAMPLE
ILabel item = new Item();
System.Console.WriteLine(item.Label);
interface ILabel { string Label { get; } }
class Item : ILabel { public string Label => "Ore"; }Ergebnis:
Ore
interface IName { ... }using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
Entity entity = new Player("Archer");
Console.WriteLine(entity.Describe());
Console.WriteLine(entity.Code);
}
}
public interface ILabel { string Label { get; } }
public abstract class Entity : ILabel
{
private readonly string name;
protected Entity(string name) { this.name = name; }
protected string Name => name;
internal int Code { get; set; } = 7;
public virtual string Label => Name;
public abstract string Describe();
}
public sealed class Player : Entity
{
public Player(string name) : base(name) { }
public override string Label => "Player: " + base.Label;
public override string Describe() => Label;
}using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
Console.WriteLine(MathFactory.Get<Number>());
}
}
public interface IValue<T> where T : IValue<T> { static abstract int Value { get; } }
public struct Number : IValue<Number> { public static int Value => 12; }
public static class MathFactory { public static int Get<T>() where T : IValue<T> => T.Value; }Offizielle Quelle: Microsoft Learn.
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