C＃| Type.GetInterfaces()方法

Type.GetInterfaces()方法用于在派生类中重写时，获取由当前Type实现或继承的所有接口。

Syntax: public abstract Type[] GetInterfaces ();

Return Value: This method returns an array of Type objects representing all the interfaces implemented or inherited by the current Type or an empty array of type Type if no interfaces are implemented or inherited by the current Type.

下面的程序说明了Type.GetInterfaces()方法的用法：

范例1：

// C# program to demonstrate the
// Type.GetInterfaces() Method
using System;
using System.Globalization;
using System.Reflection;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        // Declaring and intializing object of Type
        Type objType = typeof(int);
  
        // Getting interface of specified name
        // using GetField(String) Method
        Type[] minterface = objType.GetInterfaces();
  
        // Display the Result
        Console.WriteLine("Interface present in type {0}", objType);
        for (int i = 0; i < minterface.Length; i++)
            Console.WriteLine(" {0}", minterface[i]);
    }
}

输出：

Interface present in type System.Int32
 System.IFormattable
 System.IComparable
 System.IComparable`1[System.Int32]
 System.IConvertible
 System.IEquatable`1[System.Int32]

示例2：如果未定义公共字段

// C# program to demonstrate the
// Type.GetInterfaces() Method
using System;
using System.Globalization;
using System.Reflection;
  
class GFG {
  
    // Main Method
    public static void Main()
    {
        // Declaring and intializing object of Type
        Type objType = typeof(string);
  
        // Getting interface of specified name
        // using GetField(String) Method
        Type[] minterface = objType.GetInterfaces();
  
        // Display the Result
        Console.WriteLine("Interface present in type {0}", objType);
        for (int i = 0; i < minterface.Length; i++)
            Console.WriteLine(" {0}", minterface[i]);
    }
}

输出：

Interface present in type System.String
 System.ICloneable
 System.Collections.Generic.IEnumerable`1[System.Char]
 System.IComparable
 System.IComparable`1[System.String]
 System.IConvertible
 System.Collections.IEnumerable
 System.IEquatable`1[System.String]

参考：

• https://docs.microsoft.com/zh-cn/dotnet/api/system.type.getinterfaces?view=netframework-4.8