C# Type.GetTypeFromHandle()用法及代碼示例

Type.GetTypeFromHandle()方法用於獲取指定類型句柄引用的類型。

用法： public static Type GetTypeFromHandle (RuntimeTypeHandle handle);

Here, it takes the object which refers to the type.

返回值：此方法返回指定的RuntimeTypeHandle引用的類型；如果handle的Value屬性為null，則返回null。

以下示例程序旨在說明Type.GetTypeFromHandle()方法的使用：

示例1:

// C# program to demonstrate the 
// Type.GetTypeFromHandle() Method 
using System; 
using System.Globalization; 
using System.Reflection; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // creating and initializing object Type 
        Type type = typeof(int); 
  
        // creating object of RuntimeTypeHandle  
        // and getting instance of type 
        RuntimeTypeHandle handle = Type.GetTypeHandle(type); 
  
        // Getting the type referenced by 
        // the specified RuntimeTypeHandle, 
        // using GetTypeFromHandle() Method 
        Type outtype = Type.GetTypeFromHandle(handle); 
  
        // Display the Result 
        Console.WriteLine("Type referenced is {0}", outtype); 
        Console.WriteLine("Attributes are: " + outtype.Attributes); 
    } 
}

輸出：

Type referenced is System.RuntimeType
Attributes are: AutoLayout, AnsiClass, Class, SequentialLayout, Serializable, BeforeFieldInit

示例2:

// C# program to demonstrate the 
// Type.GetTypeFromHandle() Method 
using System; 
using System.Globalization; 
using System.Reflection; 
  
// Defining Empty struct 
struct Empty {} 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // creating and initializing object Type 
        Type type = typeof(Empty); 
  
        // creating object of RuntimeTypeHandle  
        // and getting instance of type 
        RuntimeTypeHandle handle = Type.GetTypeHandle(type); 
  
        // Getting the type referenced by 
        // the specified RuntimeTypeHandle, 
        // using GetTypeFromHandle() Method 
        Type outtype = Type.GetTypeFromHandle(handle); 
  
        // Display the Result 
        Console.WriteLine("Type referenced is {0}", outtype); 
        Console.WriteLine("Attributes are: " + outtype.Attributes); 
    } 
}

輸出：

Type referenced is System.RuntimeType
Attributes are: AutoLayout, AnsiClass, Class, SequentialLayout, Serializable, BeforeFieldInit

參考：

https://docs.microsoft.com/en-us/dotnet/api/system.type.gettypefromhandle?view=netframework-4.8

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注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 C# | Type.GetTypeFromHandle() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。