using System; using System.Collections.Generic; using System.Text; using System.Windows.Input; namespace DokterApp { public interface ITab { string Name { get; set; } ICommand CloseCommand { get; } event EventHandler CloseRequested; } public abstract class Tab : ITab { public string Name { get; set; } public ICommand CloseCommand { get; } public event EventHandler CloseRequested; public Tab() { //CloseCommand = } } }