C# |类型。GetTypeFromHandle()方法
原文:https://www . geeksforgeeks . org/c-sharp-type-gettypefromchandle-method/
类型。GetTypeFromHandle()方法用于获取指定类型句柄引用的类型。
语法:公共静态类型 GetTypeFromHandle(RuntimeTypeHandle 句柄)； 这里取指类型的宾语。
返回值:该方法返回指定 RuntimeTypeHandle 引用的类型，如果句柄的 Value 属性为空，则返回 null。
以下程序说明了类型的使用。GetTypeFromHandle() 方法:
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);
}
}
Output:
Type referenced is System.RuntimeType
Attributes are: AutoLayout, AnsiClass, Class, SequentialLayout, Serializable, BeforeFieldInit
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);
}
}
Output:
Type referenced is System.RuntimeType
Attributes are: AutoLayout, AnsiClass, Class, SequentialLayout, Serializable, BeforeFieldInit
参考:
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