C＃| Type.GetTypeArray()方法

Type.GetTypeArray()方法用于获取指定数组中对象的类型。

Syntax: public static Type[] GetTypeArray (object[] args);
Here, it takes an array of objects whose types to determine.

Return Value: This method returns an array of Type objects representing the types of the corresponding elements in args.

Exception: This method throws ArgumentNullException if args is null or, One or more of the elements in args is null.

下面的程序说明了Type.GetTypeArray()方法的用法：

范例1：

// C# program to demonstrate the
// Type.GetTypeArray(Object[]) Method
using System;
using System.Globalization;
using System.Reflection;
  
// Defining class Empty
public class Empty { }
  
class GFG {
  
    // Main Method
    public static void Main()
    {
  
        // try-catch block for handling Exception
        try {
  
            // creating and initializing object
            object[] obj = {2, 3.4, 'c', "ram"};
  
            // using GetProperties() Method
            Type[] type = Type.GetTypeArray(obj);
  
            // Display the Result
            Console.WriteLine("Types of the objects in the specified array: ");
            for (int i = 0; i < type.Length; i++)
                Console.WriteLine(" {0}", type[i]);
        }
  
        // catch ArgumentNullException here
        catch (ArgumentNullException e)
        {
            Console.Write("One or more of the elements in args is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

输出：

Types of the objects in the specified array: 
 System.Int32
 System.Double
 System.Char
 System.String

范例2：

// C# program to demonstrate the
// Type.GetTypeArray(Object[]) Method
using System;
using System.Globalization;
using System.Reflection;
  
// Defining class Empty
public class Empty {}
  
class GFG {
  
    // Main Method
    public static void Main()
    {
  
        // try-catch block for handling Exception
        try {
  
            // creating and initializing object
            object[] obj = {2, 3.4, 'c', "ram", null};
  
            // using GetProperties() Method
            Type[] type = Type.GetTypeArray(obj);
  
            // Display the Result
            Console.WriteLine("Types of the objects in the specified array: ");
            for (int i = 0; i < type.Length; i++)
                Console.WriteLine(" {0}", type[i]);
        }
  
        // catch ArgumentNullException here
        catch (ArgumentNullException e) 
        {
            Console.WriteLine("One or more of the elements in args is null.");
            Console.Write("Exception Thrown: ");
            Console.Write("{0}", e.GetType(), e.Message);
        }
    }
}

输出：

One or more of the elements in args is null.
Exception Thrown: System.ArgumentNullException

参考：

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