Get Values from IEnumerable<anonymousType>-CodePudding

I've got code to get DisplayNameAttribute from PropertyInfo and return it as a Pair

{Propertyname = "", DisplayName = ""}

public static IEnumerable GetDisplayNames<T>() => typeof(T).GetProperties()
                  .Where(p => p.IsDefined(typeof(DisplayNameAttribute), false))
                  .Select(p => new
                  {
                      PropertyName = p.Name,
                      DisplayName = p.GetCustomAttributes(typeof(DisplayNameAttribute),
                              false).Cast<DisplayNameAttribute>().Single().DisplayName
                  });

It would be fine, but I guess I don't understand anonymous types too well and I was wondering how to return value for specific item (if it is even possible - though it has to).

I thought it works like Dictionary<Tkey, TValue>, but now I know it is not. To simplify question:

How can I iterate through such construction?

CodePudding user response：

If you want to get an enumeration with tuples of property and display names, then ...

... use tuples:

public static IEnumerable<(string propertyName, string displayName)> GetDisplayNames<T>()
    => typeof(T).GetProperties()
        .Where(p => p.IsDefined(typeof(DisplayNameAttribute), false))
        .Select(p =>
            (
                propertyName: p.Name,
                displayName: p.GetCustomAttributes(typeof(DisplayNameAttribute), false)
                                 .Cast<DisplayNameAttribute>().Single().DisplayName
            )
        );

CodePudding user response：

Or could it be your are looking for a dictionary like:

public static Dictionary<string, string> GetDisplayNames<T>() =>
    typeof(T).GetProperties()
        .Where(p => p.IsDefined(typeof(DisplayNameAttribute), false))
        .ToDictionary(
            p => p.Name, // Key
            p.GetCustomAttributes(typeof(DisplayNameAttribute), false) 
             .Cast<DisplayNameAttribute>()         
             [0] // Linq not really required
             .DisplayName); // Value

CodePudding user response：

Use

IEnumerable<Dynamic>

type return type.

and to access it later: (lets say return value is dnm)

forEach(var item in dnm){
     Console.WriteLine(item.PropertyName);
     Console.WriteLine(item.DisplayName);
}