How to create a class from a Dictionary in C#?

Question

I have written a method which creates a Dictionary. I need to convert this dictionary to a class.

Example of Dictionary

 Dictionary<string, dynamic> myDictionary = new Dictionary<string, dynamic> {
            { "ID1", 12 },
            { "ID2", "Text2"},
            { "ID3", "Text3" }
        };

and this is the sample of the class which needs to be created:

public class Foo
    {
        public int ID1 { get; set; }
        public string ID2 { get; set; }
        public string ID3 { get; set; }
    }

Answer 1

Your requirements are not clearly stated, but I'm guessing you are looking for a dynamic type that has properties whose names map to dictionary keys.

In that case you can use a simple dictionary wrapper like this one:

class DynamicDictionaryWrapper : DynamicObject
{
    protected readonly Dictionary<string,object> _source;
    
    public DynamicDictionaryWrapper(Dictionary<string,object> source)
    {
        _source = source;
    }

    public override bool TryGetMember(GetMemberBinder binder, out object result)
    {
        result = null;
        return (_source.TryGetValue(binder.Name, out result));
    }
}

Which you can use this way:

public static void Main()
{
    var myDictionary = new Dictionary<string, dynamic> {
        { "ID1", 12 },
        { "ID2", "Text2"},
        { "ID3", "Text3" }
    };  
    dynamic myObject = new DynamicDictionaryWrapper(myDictionary);
    
    Console.WriteLine(myObject.ID1);
    Console.WriteLine(myObject.ID2);
    Console.WriteLine(myObject.ID3);
}

Output:

12
Text2
Text3

Link to working example on DotNetFiddle