如何在 c# 中循环匿名 object

Question

I have anonymous object looking like this:

var permissions = new
    {
        Module1 = new { view = true, delete = true },
        Module2 = new { view = true, delete = true },
    };

I tried with below code, but not working as expected

 foreach (var kp in permissions.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public))
    {
        var obj = kp.GetValue(Permissions, null);
        var prop = kp.Name + ",View Mode:" + obj.view ; 
    }

How can i display object Name and Value? Any help or input is highly appreciated, thanks

Answer 1

try this it will work.

    static void Test()
    {
        var permissions = new
        {
            Module1 = new { view = false, delete = true },
            Module2 = new { view = true, delete = true },
        };

        foreach(var kp in permissions.GetType().GetTypeInfo().DeclaredProperties)
        {
            var obj = kp.GetValue(permissions);
            var objectType = obj.GetType().GetTypeInfo();

            foreach (var item in objectType.DeclaredProperties)
            {
                var prop = kp.Name + ",view mode: " + item.GetValue(obj);
            }
        }
    }

alter it, to get extract formatted output.

Answer 2

Maybe you can try with dynamic?

dynamic permissions = new
    {
        Module1 = new { view = true, delete = true },
        Module2 = new { view = true, delete = true },
    };

permissions.Module1.view ....

Answer 3

You can use System.Reflection namespace for it which contains types that retrieve information about assemblies, modules, members, parameters, and other entities in managed code by examining their metadata.

Here is how you can iterate through anonymous obj using this namespace:

    var permissions = new
    {
        Module1 = new { view = true, delete = true },
        Module2 = new { view = true, delete = true },
    };

    foreach(var p in permissions.GetType().GetProperties(BindingFlags.Instance | BindingFlags.Public))
    {
        dynamic objValue = p.GetValue(permissions, null);
        Console.WriteLine("Key {0}", ": " + p.Name); //prints obj name
        Console.WriteLine("View {0}", ": " + objValue.view); //prints 'view' parameter's value of obj 
        Console.WriteLine("Delete {0}", ": " + objValue.delete + "\n"); //prints 'delete' parameter's value of obj
    }

Read more about System.Reflection on microsoft docs .