diff --git a/.vs/BuechermarktClient/v15/.suo b/.vs/BuechermarktClient/v15/.suo
new file mode 100644
index 0000000..2b7e5ff
Binary files /dev/null and b/.vs/BuechermarktClient/v15/.suo differ
diff --git a/.vs/BuechermarktClient/v15/sqlite3/storage.ide b/.vs/BuechermarktClient/v15/sqlite3/storage.ide
new file mode 100644
index 0000000..319c920
Binary files /dev/null and b/.vs/BuechermarktClient/v15/sqlite3/storage.ide differ
diff --git a/BuechermarktClient/Books.xaml b/BuechermarktClient/Books.xaml
index bfb0426..87a010e 100644
--- a/BuechermarktClient/Books.xaml
+++ b/BuechermarktClient/Books.xaml
@@ -19,13 +19,15 @@
         </Grid.RowDefinitions>
         <Grid Grid.Row="0">
             <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="Auto"></ColumnDefinition>
                 <ColumnDefinition Width="Auto"></ColumnDefinition>
                 <ColumnDefinition Width="*"></ColumnDefinition>
                 <ColumnDefinition Width="Auto"></ColumnDefinition>
             </Grid.ColumnDefinitions>
-            <Label Content="Search:" Grid.Column="0"></Label>
-            <TextBox Grid.Column="1" Text="{Binding SearchField, Mode=Default, UpdateSourceTrigger=PropertyChanged}"></TextBox>
-            <Button Content="S" Grid.Column="2" Width="25" Click="Search_Click"/>
+            <Button Grid.Column="0" Click="Button_Click">Student</Button>
+            <Label Content="Search:" Grid.Column="1"></Label>
+            <TextBox Grid.Column="2" Text="{Binding SearchField, Mode=Default, UpdateSourceTrigger=PropertyChanged}"></TextBox>
+            <Button Content="S" Grid.Column="3" Width="25" Click="Search_Click"/>
         </Grid>
         <ListView Grid.Row="1" Margin="0,0,0,0" Name="BooksList">
             <ListView.View>
diff --git a/BuechermarktClient/Books.xaml.cs b/BuechermarktClient/Books.xaml.cs
index d6dec2b..71c7354 100644
--- a/BuechermarktClient/Books.xaml.cs
+++ b/BuechermarktClient/Books.xaml.cs
@@ -199,5 +199,17 @@ namespace BuechermarktClient
       {
          LoadList();
       }
-   }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            var selector = new Students(true);
+            selector.ShowDialog();
+            if(selector.DialogResult == true)
+            {
+                SearchField = selector.SelectedItem.ID.ToString();
+                LoadList();
+            }
+
+        }
+    }
 }
diff --git a/BuechermarktClient/Students.xaml.cs b/BuechermarktClient/Students.xaml.cs
index cc793a9..409e1bd 100644
--- a/BuechermarktClient/Students.xaml.cs
+++ b/BuechermarktClient/Students.xaml.cs
@@ -88,26 +88,42 @@ namespace BuechermarktClient
          var show = new List<Student>();
          if (SearchField != null && SearchField != String.Empty)
          {
-            if(SearchField == "%d%")
-            {
-               foreach (var e in list)
-               {
-                  foreach (var e2 in list)
-                  {
-                     if (e.ID == e2.ID) continue;
-                     if (e.LabelId == e2.LabelId) show.Add(e);
-                  }
-               }
-            } else {
-               foreach (var e in list)
-               {
-                  //
-                  if (e.Forname.ToLower().Contains(SearchField.ToLower()) || e.Lastname.ToLower().Contains(SearchField.ToLower()) || e.EMail.ToLower().Contains(SearchField.ToLower()) || e.Form.ToLower().Contains(SearchField.ToLower()) || e.LabelId.ToLower().Contains(SearchField.ToLower()))
-                  {
-                     show.Add(e);
-                  }
-               }
-            }
+                if (SearchField == "%d%")
+                {
+                    try
+                    {
+                        foreach (var e in list)
+                        {
+                            foreach (var e2 in list)
+                            {
+                                if (e.ID == e2.ID) continue;
+                                if (e.LabelId == e2.LabelId) show.Add(e);
+                            }
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        Console.WriteLine(e.ToString());
+                    }
+                }
+                else
+                {
+                    try
+                    {
+                        foreach (var e in list)
+                        {
+                            //
+                            if (e.Forname.ToLower().Contains(SearchField.ToLower()) || e.Lastname.ToLower().Contains(SearchField.ToLower()) || e.EMail.ToLower().Contains(SearchField.ToLower()) || e.Form.ToLower().Contains(SearchField.ToLower()) || e.LabelId.ToLower().Contains(SearchField.ToLower()))
+                            {
+                                show.Add(e);
+                            }
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        Console.WriteLine(e.ToString());
+                    }
+                }
          }
          else
          {
diff --git a/BuechermarktClient/bin/Debug/BuechermarktClient.exe b/BuechermarktClient/bin/Debug/BuechermarktClient.exe
index 83d25ea..f30217f 100644
Binary files a/BuechermarktClient/bin/Debug/BuechermarktClient.exe and b/BuechermarktClient/bin/Debug/BuechermarktClient.exe differ
diff --git a/BuechermarktClient/bin/Debug/BuechermarktClient.pdb b/BuechermarktClient/bin/Debug/BuechermarktClient.pdb
index effd8f1..bcbb335 100644
Binary files a/BuechermarktClient/bin/Debug/BuechermarktClient.pdb and b/BuechermarktClient/bin/Debug/BuechermarktClient.pdb differ
diff --git a/BuechermarktClient/obj/Debug/App.g.i.cs b/BuechermarktClient/obj/Debug/App.g.i.cs
index 902397e..fb1e8c3 100644
--- a/BuechermarktClient/obj/Debug/App.g.i.cs
+++ b/BuechermarktClient/obj/Debug/App.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\App.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "A601CBE00213CB854D3A5B0F8E4EA1C9"
+#pragma checksum "..\..\App.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "2B6F6494563A23836A100CA9FB0D34F44591709A"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/BookTypes.g.i.cs b/BuechermarktClient/obj/Debug/BookTypes.g.i.cs
index b3cd279..5a5bbd5 100644
--- a/BuechermarktClient/obj/Debug/BookTypes.g.i.cs
+++ b/BuechermarktClient/obj/Debug/BookTypes.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\BookTypes.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "69E247AFC50A459A29907C1D6F49CCB1"
+#pragma checksum "..\..\BookTypes.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "DC82460FD7D5E3DCBA1C796BA3E29A16C8D0A2C1"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/BookTypesEdit.g.i.cs b/BuechermarktClient/obj/Debug/BookTypesEdit.g.i.cs
index adf14fd..1aa9cd0 100644
--- a/BuechermarktClient/obj/Debug/BookTypesEdit.g.i.cs
+++ b/BuechermarktClient/obj/Debug/BookTypesEdit.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\BookTypesEdit.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "82691408CF5C57ABF8F3969E05225178"
+#pragma checksum "..\..\BookTypesEdit.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "BAEB1D6C1BBDE27D3992F02396B911775481D0D4"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/Books.baml b/BuechermarktClient/obj/Debug/Books.baml
index bf7d0a2..f0425a8 100644
Binary files a/BuechermarktClient/obj/Debug/Books.baml and b/BuechermarktClient/obj/Debug/Books.baml differ
diff --git a/BuechermarktClient/obj/Debug/Books.g.cs b/BuechermarktClient/obj/Debug/Books.g.cs
index 5b1f793..56b9ee7 100644
--- a/BuechermarktClient/obj/Debug/Books.g.cs
+++ b/BuechermarktClient/obj/Debug/Books.g.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\Books.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "50E9CEAD80AB919D558A4823C2548875"
+#pragma checksum "..\..\Books.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "ECCAFE8718833153A59AF45BB0C3B1B0"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
@@ -41,7 +41,7 @@ namespace BuechermarktClient {
     public partial class Books : System.Windows.Window, System.Windows.Markup.IComponentConnector, System.Windows.Markup.IStyleConnector {
         
         
-        #line 30 "..\..\Books.xaml"
+        #line 32 "..\..\Books.xaml"
         [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1823:AvoidUnusedPrivateFields")]
         internal System.Windows.Controls.ListView BooksList;
         
@@ -80,18 +80,26 @@ namespace BuechermarktClient {
             {
             case 1:
             
-            #line 28 "..\..\Books.xaml"
-            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Search_Click);
+            #line 27 "..\..\Books.xaml"
+            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Button_Click);
             
             #line default
             #line hidden
             return;
             case 2:
+            
+            #line 30 "..\..\Books.xaml"
+            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Search_Click);
+            
+            #line default
+            #line hidden
+            return;
+            case 3:
             this.BooksList = ((System.Windows.Controls.ListView)(target));
             return;
-            case 4:
+            case 5:
             
-            #line 46 "..\..\Books.xaml"
+            #line 48 "..\..\Books.xaml"
             ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.AddNew_Click);
             
             #line default
@@ -111,11 +119,11 @@ namespace BuechermarktClient {
             System.Windows.EventSetter eventSetter;
             switch (connectionId)
             {
-            case 3:
+            case 4:
             eventSetter = new System.Windows.EventSetter();
             eventSetter.Event = System.Windows.Controls.Control.PreviewMouseDoubleClickEvent;
             
-            #line 42 "..\..\Books.xaml"
+            #line 44 "..\..\Books.xaml"
             eventSetter.Handler = new System.Windows.Input.MouseButtonEventHandler(this.ListViewItem_PreviewMouseUp);
             
             #line default
diff --git a/BuechermarktClient/obj/Debug/Books.g.i.cs b/BuechermarktClient/obj/Debug/Books.g.i.cs
index 5b1f793..4abd18e 100644
--- a/BuechermarktClient/obj/Debug/Books.g.i.cs
+++ b/BuechermarktClient/obj/Debug/Books.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\Books.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "50E9CEAD80AB919D558A4823C2548875"
+#pragma checksum "..\..\Books.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "481E063FEC297502455DF4EB43DDEC60F85C900E"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
@@ -41,7 +41,7 @@ namespace BuechermarktClient {
     public partial class Books : System.Windows.Window, System.Windows.Markup.IComponentConnector, System.Windows.Markup.IStyleConnector {
         
         
-        #line 30 "..\..\Books.xaml"
+        #line 32 "..\..\Books.xaml"
         [System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1823:AvoidUnusedPrivateFields")]
         internal System.Windows.Controls.ListView BooksList;
         
@@ -80,18 +80,26 @@ namespace BuechermarktClient {
             {
             case 1:
             
-            #line 28 "..\..\Books.xaml"
-            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Search_Click);
+            #line 27 "..\..\Books.xaml"
+            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Button_Click);
             
             #line default
             #line hidden
             return;
             case 2:
+            
+            #line 30 "..\..\Books.xaml"
+            ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.Search_Click);
+            
+            #line default
+            #line hidden
+            return;
+            case 3:
             this.BooksList = ((System.Windows.Controls.ListView)(target));
             return;
-            case 4:
+            case 5:
             
-            #line 46 "..\..\Books.xaml"
+            #line 48 "..\..\Books.xaml"
             ((System.Windows.Controls.Button)(target)).Click += new System.Windows.RoutedEventHandler(this.AddNew_Click);
             
             #line default
@@ -111,11 +119,11 @@ namespace BuechermarktClient {
             System.Windows.EventSetter eventSetter;
             switch (connectionId)
             {
-            case 3:
+            case 4:
             eventSetter = new System.Windows.EventSetter();
             eventSetter.Event = System.Windows.Controls.Control.PreviewMouseDoubleClickEvent;
             
-            #line 42 "..\..\Books.xaml"
+            #line 44 "..\..\Books.xaml"
             eventSetter.Handler = new System.Windows.Input.MouseButtonEventHandler(this.ListViewItem_PreviewMouseUp);
             
             #line default
diff --git a/BuechermarktClient/obj/Debug/BooksEdit.g.i.cs b/BuechermarktClient/obj/Debug/BooksEdit.g.i.cs
index 81987dd..c308b00 100644
--- a/BuechermarktClient/obj/Debug/BooksEdit.g.i.cs
+++ b/BuechermarktClient/obj/Debug/BooksEdit.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\BooksEdit.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "06D0E6E88FCAD8BC03096A6FF1F1BF04"
+#pragma checksum "..\..\BooksEdit.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "4C9C0F0CA7E54351C41C8DCF0DDDB00C01685AB6"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.CopyComplete b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.CopyComplete
new file mode 100644
index 0000000..e69de29
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.CoreCompileInputs.cache b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.CoreCompileInputs.cache
new file mode 100644
index 0000000..da8ce23
--- /dev/null
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+06741fc68c9548d1443859949d015d710346593b
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.FileListAbsolute.txt b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.FileListAbsolute.txt
index 14e9e15..92fe7b4 100644
--- a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.FileListAbsolute.txt
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.FileListAbsolute.txt
@@ -111,3 +111,39 @@ D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClie
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\bin\Debug\System.Runtime.InteropServices.RuntimeInformation.dll
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\obj\Debug\Sell.g.cs
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\obj\Debug\Sell.baml
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\BuechermarktClient.exe.config
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\BuechermarktClient.exe
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\BuechermarktClient.pdb
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\MongoDB.Bson.xml
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\MongoDB.Driver.xml
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\MongoDB.Driver.Core.xml
+D:\Projekte\buechermarkt\BuechermarktClient\bin\Debug\Newtonsoft.Json.xml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.csprojResolveAssemblyReference.cache
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Books.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BooksEdit.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BookTypes.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\GetConnection.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Sell.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Students.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\StudentsEdit.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BookTypesEdit.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\MainWindow.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\App.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\GeneratedInternalTypeHelper.g.cs
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient_MarkupCompile.cache
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient_MarkupCompile.lref
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Books.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BooksEdit.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BookTypes.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\GetConnection.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Sell.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\Students.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\StudentsEdit.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BookTypesEdit.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\MainWindow.baml
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.g.resources
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.Properties.Resources.resources
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.csproj.GenerateResource.Cache
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.csproj.CoreCompileInputs.cache
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.exe
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\BuechermarktClient.pdb
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.GenerateResource.Cache b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.GenerateResource.Cache
index a7b968b..3c09328 100644
Binary files a/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.GenerateResource.Cache and b/BuechermarktClient/obj/Debug/BuechermarktClient.csproj.GenerateResource.Cache differ
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.csprojResolveAssemblyReference.cache b/BuechermarktClient/obj/Debug/BuechermarktClient.csprojResolveAssemblyReference.cache
index e882fae..779c5b7 100644
Binary files a/BuechermarktClient/obj/Debug/BuechermarktClient.csprojResolveAssemblyReference.cache and b/BuechermarktClient/obj/Debug/BuechermarktClient.csprojResolveAssemblyReference.cache differ
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.exe b/BuechermarktClient/obj/Debug/BuechermarktClient.exe
index 83d25ea..f30217f 100644
Binary files a/BuechermarktClient/obj/Debug/BuechermarktClient.exe and b/BuechermarktClient/obj/Debug/BuechermarktClient.exe differ
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.g.resources b/BuechermarktClient/obj/Debug/BuechermarktClient.g.resources
index 40b8905..1968847 100644
Binary files a/BuechermarktClient/obj/Debug/BuechermarktClient.g.resources and b/BuechermarktClient/obj/Debug/BuechermarktClient.g.resources differ
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient.pdb b/BuechermarktClient/obj/Debug/BuechermarktClient.pdb
index effd8f1..bcbb335 100644
Binary files a/BuechermarktClient/obj/Debug/BuechermarktClient.pdb and b/BuechermarktClient/obj/Debug/BuechermarktClient.pdb differ
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.cache b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.cache
index 2e10048..16f52b2 100644
--- a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.cache
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.cache
@@ -4,16 +4,16 @@
 winexe
 C#
 .cs
-D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\obj\Debug\
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\
 BuechermarktClient
 none
 false
 DEBUG;TRACE
-D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\App.xaml
+D:\Projekte\buechermarkt\BuechermarktClient\App.xaml
 92087576092
 
 18-1224789506
-70-1428833885
+70-54361125
 Books.xaml;BooksEdit.xaml;BookTypes.xaml;GetConnection.xaml;Sell.xaml;Students.xaml;StudentsEdit.xaml;BookTypesEdit.xaml;MainWindow.xaml;
 
 False
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.cache b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.cache
index f2df55a..6d1e5bd 100644
--- a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.cache
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.cache
@@ -4,17 +4,17 @@
 winexe
 C#
 .cs
-D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\obj\Debug\
+\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\obj\Debug\
 BuechermarktClient
 none
 false
 DEBUG;TRACE
-D:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\App.xaml
+\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\App.xaml
 92087576092
 
 221087900245
-70-1428833885
+701012810308
 Books.xaml;BooksEdit.xaml;BookTypes.xaml;GetConnection.xaml;Sell.xaml;Students.xaml;StudentsEdit.xaml;BookTypesEdit.xaml;MainWindow.xaml;
 
-False
+True
 
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.lref b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.lref
new file mode 100644
index 0000000..678844a
--- /dev/null
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.i.lref
@@ -0,0 +1,12 @@
+\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\obj\Debug\GeneratedInternalTypeHelper.g.i.cs
+
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\Books.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\BooksEdit.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\BookTypes.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\GetConnection.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\Sell.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\Students.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\StudentsEdit.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\BookTypesEdit.xaml;;
+F\\FABIAN03\Projekte\buechermarkt\BuechermarktClient\MainWindow.xaml;;
+
diff --git a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.lref b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.lref
index e96a161..99f851d 100644
--- a/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.lref
+++ b/BuechermarktClient/obj/Debug/BuechermarktClient_MarkupCompile.lref
@@ -1,12 +1,12 @@
-
+D:\Projekte\buechermarkt\BuechermarktClient\obj\Debug\GeneratedInternalTypeHelper.g.cs
 
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\Books.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\BooksEdit.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\BookTypes.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\GetConnection.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\Students.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\StudentsEdit.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\BookTypesEdit.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\MainWindow.xaml;;
-FD:\Dokumente\Projekte\Buechermarkt\BuechermarktClient\Sell.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\Books.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\BooksEdit.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\BookTypes.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\GetConnection.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\Sell.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\Students.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\StudentsEdit.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\BookTypesEdit.xaml;;
+FD:\Projekte\buechermarkt\BuechermarktClient\MainWindow.xaml;;
 
diff --git a/BuechermarktClient/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/BuechermarktClient/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
index d56c97c..cd76c77 100644
Binary files a/BuechermarktClient/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache and b/BuechermarktClient/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ
diff --git a/BuechermarktClient/obj/Debug/GeneratedInternalTypeHelper.g.cs b/BuechermarktClient/obj/Debug/GeneratedInternalTypeHelper.g.cs
index 303ddf0..0fd4dd4 100644
--- a/BuechermarktClient/obj/Debug/GeneratedInternalTypeHelper.g.cs
+++ b/BuechermarktClient/obj/Debug/GeneratedInternalTypeHelper.g.cs
@@ -1,62 +1,2 @@
-//------------------------------------------------------------------------------
-// <auto-generated>
-//     Dieser Code wurde von einem Tool generiert.
-//     Laufzeitversion:4.0.30319.42000
-//
-//     Änderungen an dieser Datei können falsches Verhalten verursachen und gehen verloren, wenn
-//     der Code erneut generiert wird.
-// </auto-generated>
-//------------------------------------------------------------------------------
-
-namespace XamlGeneratedNamespace {
-    
-    
-    /// <summary>
-    /// GeneratedInternalTypeHelper
-    /// </summary>
-    [System.Diagnostics.DebuggerNonUserCodeAttribute()]
-    [System.CodeDom.Compiler.GeneratedCodeAttribute("PresentationBuildTasks", "4.0.0.0")]
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-    public sealed class GeneratedInternalTypeHelper : System.Windows.Markup.InternalTypeHelper {
-        
-        /// <summary>
-        /// CreateInstance
-        /// </summary>
-        protected override object CreateInstance(System.Type type, System.Globalization.CultureInfo culture) {
-            return System.Activator.CreateInstance(type, ((System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.NonPublic) 
-                            | (System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.CreateInstance)), null, null, culture);
-        }
-        
-        /// <summary>
-        /// GetPropertyValue
-        /// </summary>
-        protected override object GetPropertyValue(System.Reflection.PropertyInfo propertyInfo, object target, System.Globalization.CultureInfo culture) {
-            return propertyInfo.GetValue(target, System.Reflection.BindingFlags.Default, null, null, culture);
-        }
-        
-        /// <summary>
-        /// SetPropertyValue
-        /// </summary>
-        protected override void SetPropertyValue(System.Reflection.PropertyInfo propertyInfo, object target, object value, System.Globalization.CultureInfo culture) {
-            propertyInfo.SetValue(target, value, System.Reflection.BindingFlags.Default, null, null, culture);
-        }
-        
-        /// <summary>
-        /// CreateDelegate
-        /// </summary>
-        protected override System.Delegate CreateDelegate(System.Type delegateType, object target, string handler) {
-            return ((System.Delegate)(target.GetType().InvokeMember("_CreateDelegate", (System.Reflection.BindingFlags.InvokeMethod 
-                            | (System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance)), null, target, new object[] {
-                        delegateType,
-                        handler}, null)));
-        }
-        
-        /// <summary>
-        /// AddEventHandler
-        /// </summary>
-        protected override void AddEventHandler(System.Reflection.EventInfo eventInfo, object target, System.Delegate handler) {
-            eventInfo.AddEventHandler(target, handler);
-        }
-    }
-}
+
 
diff --git a/BuechermarktClient/obj/Debug/GetConnection.g.i.cs b/BuechermarktClient/obj/Debug/GetConnection.g.i.cs
index 430eb4e..118eb9e 100644
--- a/BuechermarktClient/obj/Debug/GetConnection.g.i.cs
+++ b/BuechermarktClient/obj/Debug/GetConnection.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\GetConnection.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "6D127FC079E11D18F8EBE625E055FE2D"
+#pragma checksum "..\..\GetConnection.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "E46985E556172532AF6CEC956E2DF7F31A9F7A93"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/MainWindow.g.i.cs b/BuechermarktClient/obj/Debug/MainWindow.g.i.cs
index 46282d7..4eba09a 100644
--- a/BuechermarktClient/obj/Debug/MainWindow.g.i.cs
+++ b/BuechermarktClient/obj/Debug/MainWindow.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\MainWindow.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "520B213CE639A04EE6A19EB58C6DD82B"
+#pragma checksum "..\..\MainWindow.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "6681EDB10C67FC8432E2D0EE84DEC7D60B565D6D"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/Sell.g.i.cs b/BuechermarktClient/obj/Debug/Sell.g.i.cs
index 959aba5..0b15477 100644
--- a/BuechermarktClient/obj/Debug/Sell.g.i.cs
+++ b/BuechermarktClient/obj/Debug/Sell.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\Sell.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "FD5592658FAD976F9BD380A194B58274"
+#pragma checksum "..\..\Sell.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "D6C3CD140EA32F0AD0CBAB197A635555BC3A8621"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/Students.g.i.cs b/BuechermarktClient/obj/Debug/Students.g.i.cs
index 9792739..5cb6ce7 100644
--- a/BuechermarktClient/obj/Debug/Students.g.i.cs
+++ b/BuechermarktClient/obj/Debug/Students.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\Students.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "58E438404BAC5A52DE8371DE0FBEE454"
+#pragma checksum "..\..\Students.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "2E1752DAD33C58236A12D40E6553A510E1876687"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktClient/obj/Debug/StudentsEdit.g.i.cs b/BuechermarktClient/obj/Debug/StudentsEdit.g.i.cs
index 57614be..25ae541 100644
--- a/BuechermarktClient/obj/Debug/StudentsEdit.g.i.cs
+++ b/BuechermarktClient/obj/Debug/StudentsEdit.g.i.cs
@@ -1,4 +1,4 @@
-#pragma checksum "..\..\StudentsEdit.xaml" "{406ea660-64cf-4c82-b6f0-42d48172a799}" "A651F5976C9CB85987FB0E5FE8C50825"
+#pragma checksum "..\..\StudentsEdit.xaml" "{ff1816ec-aa5e-4d10-87f7-6f4963833460}" "BDA728915A66B009550B314E0714E38226801A38"
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     Dieser Code wurde von einem Tool generiert.
diff --git a/BuechermarktServer/bin/Debug/BuechermarktServer.exe.config b/BuechermarktServer/bin/Debug/BuechermarktServer.exe.config
new file mode 100644
index 0000000..bae5d6d
--- /dev/null
+++ b/BuechermarktServer/bin/Debug/BuechermarktServer.exe.config
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1"/>
+    </startup>
+</configuration>
diff --git a/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.CoreCompileInputs.cache b/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.CoreCompileInputs.cache
new file mode 100644
index 0000000..9fb861c
--- /dev/null
+++ b/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.CoreCompileInputs.cache
@@ -0,0 +1 @@
+a3d7826233d70375ed55eeb814891dcbf7b2b61e
diff --git a/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.FileListAbsolute.txt b/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.FileListAbsolute.txt
index f504ba8..5cb1f18 100644
--- a/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.FileListAbsolute.txt
+++ b/BuechermarktServer/obj/Debug/BuechermarktServer.csproj.FileListAbsolute.txt
@@ -11,3 +11,9 @@ D:\Dokumente\Projekte\Buechermarkt\BuechermarktServer\bin\Debug\BuechermarktServ
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.exe
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.pdb
 D:\Dokumente\Projekte\Buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.csprojResolveAssemblyReference.cache
+D:\Projekte\buechermarkt\BuechermarktServer\bin\Debug\BuechermarktServer.exe.config
+D:\Projekte\buechermarkt\BuechermarktServer\bin\Debug\BuechermarktServer.exe
+D:\Projekte\buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.csprojResolveAssemblyReference.cache
+D:\Projekte\buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.csproj.CoreCompileInputs.cache
+D:\Projekte\buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.exe
+D:\Projekte\buechermarkt\BuechermarktServer\obj\Debug\BuechermarktServer.pdb
diff --git a/BuechermarktServer/obj/Debug/BuechermarktServer.csprojResolveAssemblyReference.cache b/BuechermarktServer/obj/Debug/BuechermarktServer.csprojResolveAssemblyReference.cache
new file mode 100644
index 0000000..da0177c
Binary files /dev/null and b/BuechermarktServer/obj/Debug/BuechermarktServer.csprojResolveAssemblyReference.cache differ
diff --git a/BuechermarktServer/obj/Debug/BuechermarktServer.pdb b/BuechermarktServer/obj/Debug/BuechermarktServer.pdb
new file mode 100644
index 0000000..b639b7a
Binary files /dev/null and b/BuechermarktServer/obj/Debug/BuechermarktServer.pdb differ
diff --git a/BuechermarktServer/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache b/BuechermarktServer/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache
new file mode 100644
index 0000000..f5aab04
Binary files /dev/null and b/BuechermarktServer/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache differ