Add properties dynamically at run time in existing class c#

I have a UI from where we are adding values in a table Fields (Column-FieldName)

field Column values- Id FieldName

1 ProductName 2 ProductId 3 ProductCode

I have a existing class product with some existing properties

public class Product { public string ProductID { get; set; } product in a product search listing public string StoreName { get; set; } public string SearchToken { get; set; }

 }

I am looking for a method which will add properties in existing class product at run time dynamically when user will add values in a table Fields