Dynamically add properties to a existing object

by

It’s not possible with a “normal” object, but you can do it with an ExpandoObject and the dynamic keyword:

dynamic person = new ExpandoObject();
person.FirstName = "Sam";
person.LastName = "Lewis";
person.Age = 42;
person.Foo = "Bar";
...

If you try to assign a property that doesn’t exist, it is added to the object. If you try to read a property that doesn’t exist, it will raise an exception. So it’s roughly the same behavior as a dictionary (and ExpandoObject actually implements IDictionary<string, object>)

More Related Contents:

  1. Simple Text editor – Need to save as Binary format [closed]
  2. How to ignore a property in class if null, using json.net
  3. Draw semi transparent overlay image all over the windows form having some controls
  4. Why Would I Ever Need to Use C# Nested Classes [duplicate]
  5. How to pass parameters to ThreadStart method in Thread?
  6. Is it abusive to use IDisposable and “using” as a means for getting “scoped behavior” for exception safety?
  7. C – determine if a number is prime
  8. What strategies and tools are useful for finding memory leaks in .NET?
  9. SQL Query slow in .NET application but instantaneous in SQL Server Management Studio
  10. Why C# doesn’t implement indexed properties?
  11. Why do C# multidimensional arrays not implement IEnumerable?
  12. Console.Read not returning my int32 [duplicate]
  13. Entity Framework/SQL2008 – How to Automatically Update LastModified fields for Entities?
  14. linq where list contains any in list
  15. C# How to loop user input until the datatype of the input is correct?
  16. Why cannot IEnumerable be cast as IEnumerable?
  17. Creating PowerPoint presentations programmatically
  18. Windows.Forms.Panel 32767 size limit
  19. nullable object must have a value
  20. How to create NHibernate HasManyToMany relation
  21. Get folder name from full file path
  22. How do attribute classes work?
  23. Issues Doing a String Comparison in LINQ
  24. Add HTML String to OpenXML (*.docx) Document
  25. Unable to find the requested .Net Framework Data Provider. It may not be installed
  26. Bind Dictionary with list in viewmodel to checkboxes
  27. C# multithreading chat server, handle disconnect
  28. Understand the shift operator
  29. Connecting to LDAP from C# using DirectoryServices
  30. JSON Deserialization – String Is Automatically Converted To Int

Leave a Comment