C# | Type.GetTypeHandle() Method

Last Updated : 22 May, 2019

Type.GetTypeHandle() Method is used to get the handle for the Type of a specified object.

Syntax: public static RuntimeTypeHandle GetTypeHandle (object o);
Here, it takes the object for which to get the type handle.

Return Value: This method returns The handle for the Type of the specified Object.

Exception: This method throws ArgumentNullException if o is null.

Below programs illustrate the use of Type.GetTypeHandle() Method:

Example 1:

// C# program to demonstrate the 
// Type.GetTypeHandle() Method 
using System; 
using System.Globalization; 
using System.Reflection; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // try-catch block for handling Exception 
        try { 
  
            // creating and initializing object Type 
            Type type = typeof(int); 
  
            // getting handle of given type 
            // by using GetTypeHandle() Method 
            RuntimeTypeHandle handle = Type.GetTypeHandle(type); 
  
            // Display the Result 
            Console.WriteLine("Type referenced is {0}", handle); 
        } 
  
        // catch ArgumentNullException here 
        catch (ArgumentNullException e)  
        { 
            Console.WriteLine("object is null."); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
} 

Output:

Type referenced is System.RuntimeTypeHandle

Example 2:

// C# program to demonstrate the 
// Type.GetTypeHandle() Method 
using System; 
using System.Globalization; 
using System.Reflection; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
  
        // try-catch block for handling Exception 
        try { 
  
            // creating and initializing object Type 
            Type type = typeof(int); 
  
            // getting handle of given type 
            // by using GetTypeHandle() Method 
            RuntimeTypeHandle handle = Type.GetTypeHandle(null); 
  
            // Display the Result 
            Console.WriteLine("Type referenced is {0}", handle); 
        } 
  
        // catch ArgumentNullException here 
        catch (ArgumentNullException e) 
        { 
            Console.WriteLine("object is null."); 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
} 

Output:

object is null.
Exception Thrown: System.ArgumentNullException

Reference:

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

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C# | Type.GetTypeHandle() Method

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