diff --git a/DokterApp/ITab.cs b/DokterApp/ITab.cs
new file mode 100644
index 0000000..c01f9ad
--- /dev/null
+++ b/DokterApp/ITab.cs
@@ -0,0 +1,28 @@
+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 = 
+        }
+
+    }
+
+}
diff --git a/DokterApp/UserControlForTab.xaml.cs b/DokterApp/UserControlForTab.xaml.cs
index 2c34c55..6e30162 100644
--- a/DokterApp/UserControlForTab.xaml.cs
+++ b/DokterApp/UserControlForTab.xaml.cs
@@ -22,5 +22,6 @@ namespace DokterApp
         {
             InitializeComponent();
         }
+
     }
 }
diff --git a/DokterApp/UserTab.cs b/DokterApp/UserTab.cs
new file mode 100644
index 0000000..d24e593
--- /dev/null
+++ b/DokterApp/UserTab.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace DokterApp
+{
+    class UserTab : Tab
+    {
+        public UserTab()
+        {
+            Name = "Piet";
+        }
+    }
+}
diff --git a/DokterApp/WindowTabs.xaml b/DokterApp/WindowTabs.xaml
index 0ba52cf..bf7a45e 100644
--- a/DokterApp/WindowTabs.xaml
+++ b/DokterApp/WindowTabs.xaml
@@ -7,14 +7,9 @@
         mc:Ignorable="d"
         Title="WindowTabs" Height="450" Width="800">
     <Grid>
-        <TabControl>
-            <TabItem Header="TabItem">
-                <Grid Background="#FFE5E5E5"/>
-            </TabItem>
-            <TabItem Header="TabItem">
-                <Grid Background="#FFE5E5E5"/>
-            </TabItem>
+        <TabControl x:Name="tabControl" Loaded="tabControl_Load">
         </TabControl>
+        <Button Content="Button" HorizontalAlignment="Left" Margin="400,76,0,0" VerticalAlignment="Top" Click="Button_Click"/>
 
     </Grid>
 </Window>
diff --git a/DokterApp/WindowTabs.xaml.cs b/DokterApp/WindowTabs.xaml.cs
index e1baf45..5f02d26 100644
--- a/DokterApp/WindowTabs.xaml.cs
+++ b/DokterApp/WindowTabs.xaml.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
@@ -17,9 +18,26 @@ namespace DokterApp
     /// </summary>
     public partial class WindowTabs : Window
     {
+        public TabControl tbControl;
         public WindowTabs()
         {
             InitializeComponent();
         }
+
+        private void tabControl_Load(object sender, RoutedEventArgs e)
+        {
+            this.tbControl = (sender as TabControl);
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            TabItem newTabItem = new TabItem
+            {
+                Header = "Test",
+                
+            };
+            newTabItem.Content = new UserControlForTab();
+            this.tbControl.Items.Add(newTabItem);
+        }
     }
 }
diff --git a/ProftaakRH/ProftaakRH.sln b/ProftaakRH/ProftaakRH.sln
index f2df07f..5d13d46 100644
--- a/ProftaakRH/ProftaakRH.sln
+++ b/ProftaakRH/ProftaakRH.sln
@@ -13,7 +13,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Client", "..\Client\Client.
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Message", "..\Message\Message.csproj", "{9ED6832D-B0FB-4460-9BCD-FAA58863B0CE}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DokterApp", "..\DokterApp\DokterApp.csproj", "{B150F08B-13DA-4D17-BD96-7E89F52727C6}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DokterApp", "..\DokterApp\DokterApp.csproj", "{B150F08B-13DA-4D17-BD96-7E89F52727C6}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution