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GenericTypeDefinitionName of IEnumerable <object>

NOTE . This question is about the technical aspect and NOT about design decisions. An answer or comment about another design DOES NOT answer this question, since I am only interested in the nature of the technical aspect of this particular question.

As C# 6.0I have this technique where I give IEnumerable<T>:

public void MyMethod(IEnumerable<object> list) { ... }

Say the caller calls it in an array MyClass[].
What I want is the class name of the generic type definition, I had this method implementation:

public void MyMethod(IEnumerable<object> list)
{
    ...
    var name =
        from abstraction in list.GetType().GetInterfaces()
        where abstraction.IsGenericType
        && abstraction.GetGenericTypeDefinition() == typeof(IEnumerable<>)
        from genericArgumentType in abstraction.GetGenericArguments()
        select genericArgumentType.Name;
    ...
}

( ) (, "MyClass"). :

public static string GetGenericTypeDefinitionName<T>(this IEnumerable<T> list)
{
    var name =
        from abstraction in list.GetType().GetInterfaces()
        where abstraction.IsGenericType
        && abstraction.GetGenericTypeDefinition() == typeof(IEnumerable<>)
        from genericArgumentType in abstraction.GetGenericArguments()
        select genericArgumentType.Name;

    return name.Single();
}

GetGenericTypeDefinitionName() MyMethod() :

public void MyMethod(IEnumerable<object> list)
{
    ...
    var name = list.GetGenericTypeDefinitionName();
    ...
}

, : " ! return typeof(T).Name ? '

, "Object", (, "MyClass") .

? , T. ? C#?

+4
1

, , , IEnumerable<T> T IEnumerable<object>.

, , <T> , object. , , - .

static void Main()
{
    IEnumerable<Foo> typed = new Foo[0];
    IEnumerable<object> untyped = typed;

    Console.WriteLine(typed.GetByGenerics());     // Foo
    Console.WriteLine(untyped.GetByGenerics());   // Object

    Console.WriteLine(typed.GetByReflection());   // Foo
    Console.WriteLine(untyped.GetByReflection()); // Foo
}
public static string GetByGenerics<T>(this IEnumerable<T> list)
{
    return typeof(T).Name;
}
public static string GetByReflection<T>(this IEnumerable<T> list)
{
    var name =
        from abstraction in list.GetType().GetInterfaces()
        where abstraction.IsGenericType
        && abstraction.GetGenericTypeDefinition() == typeof(IEnumerable<>)
        from genericArgumentType in abstraction.GetGenericArguments()
        select genericArgumentType.Name;

    return name.Single();
}

,

Console.WriteLine(GetByGenerics<Foo>(typed));      // Foo
Console.WriteLine(GetByGenerics<Object>(untyped)); // Object
+5

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