我正在準備考試，我必須檢查各種代碼。一個是關于 C# 中的委托 - 我看不到它的作用，因為我不知道您是否可以將來自兩個不同類的函數放在一個委托中。這是代碼：namespace konzolnaApplikacijaDelegateVoidMain {public delegate int MyDelegate(int x);class Program{ public int number; public Program (int x) { number = x; } public int Add(int x) { return x + 10; } public int Substract(int x) { return x - 10; } public int Multiply(int x) { return x * 2; } static void Main(string[] args) { MyDelegate delegate; Program first = new Program(20); Program second = new Program(50); delegate = first.Add; delegate += second.Add; delegate -= first.Substract; delegate += second.Multiply; delegate += first.Add; delegate(first.number); delegate(second.number); Console.Write("{0}", first.number + second.number); } }}
1 回答
慕村9548890
TA貢獻1884條經驗 獲得超4個贊
代表很簡單。考慮以下委托的實現。
namespace DelegateExamples
{
class Program
{
//Declare a integer delegate to handle the functions in class A and B
public delegate int MathOps(int a, int b);
static void Main(string[] args)
{
MathOps multiply = ClassA.Multiply;
MathOps add = ClassB.Add;
int resultA = multiply(30, 30);
int resultB = add(1000, 500);
Console.WriteLine("Results: " + resultA + " " + resultB);
Console.ReadKey();
}
}
public class ClassA
{
public static int Multiply(int a, int b)
{
return a * b;
}
}
public class ClassB
{
public static int Add(int a, int b)
{
return a + b;
}
}
}
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