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C# Switch on Object Type at Runtime

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悲&欢浪女
悲&欢浪女 2020-12-07 03:17

I have a List. I want to loop over the list and print the values out in a more friendly manner than just o.ToString() in case some of
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  • 鱼传尺愫
    鱼传尺愫 (楼主)
    2020-12-07 03:56

    You can use the dynamic keyword for this with .NET 4.0, since you're dealing with built in types. Otherwise, you'd use polymorphism for this.

    Example:

    using System;
using System.Collections.Generic;

class Test
{
    static void Main()
    {
        List stuff = new List { DateTime.Now, true, 666 };
        foreach (object o in stuff)
        {
            dynamic d = o;
            Print(d);
        }
    }

    private static void Print(DateTime d)
    {
        Console.WriteLine("I'm a date"); //replace with your actual implementation
    }

    private static void Print(bool b)
    {
        Console.WriteLine("I'm a bool");
    }

    private static void Print(int i)
    {
        Console.WriteLine("I'm an int");
    }
}



    Prints out:
    


    I'm a date
I'm a bool
I'm an int

    
    
    
             
    
                                                        
    
            
            
    
              
                
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