如何从C＃中的列表中获取属性键名？

Question

If I have a list such as :

var ListCommandQuery = new List<dynamic> { }; 

ListCommandQuery.Add( 
new { User_ID = "4", User_Name = "jhony" ,    Mobile_Phone = 054175548999} );

and i want to print only the Properties key names not the values
so the result will show me :

User_ID 
User_Name 
Mobile_Phone 

instead of :

4
jhony
054175548999

How that can be done ?

Answer 1

When using anonymous types you need the type definition

foreach (var item in listCommandQuery)
{
     foreach (var prop in item.GetType().GetProperties())
     {
              Console.WriteLine(prop.Name);
     }
}

In an anonymous object the names are not keys like in a DynamicObject but actual Properties. The Compiler creates an actual class for you in the background. Unlike ExpandoObject where the object is an IDictonery