C# Type.GetTypeArray()用法及代码示例

Type.GetTypeArray()方法用于获取指定数组中对象的类型。

用法： public static Type[] GetTypeArray (object[] args);

Here, it takes an array of objects whose types to determine.

返回值：此方法返回一个Type对象数组，该数组代表args中相应元素的类型。

异常：如果args为null或args中的一个或多个元素为null，则此方法将引发ArgumentNullException。

以下示例程序旨在说明Type.GetTypeArray()方法的使用：

示例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

示例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/en-us/dotnet/api/system.type.gettypearray?view=netframework-4.8

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 C# | Type.GetTypeArray() Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。