diff --git a/ConsoleApplication/ConsoleApplication.csproj b/ConsoleApplication/ConsoleApplication.csproj
index 348a8aa..9df6079 100644
--- a/ConsoleApplication/ConsoleApplication.csproj
+++ b/ConsoleApplication/ConsoleApplication.csproj
@@ -12,6 +12,11 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="5.0.3" />
   </ItemGroup>
 
+<!--  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="5.0.3" />
+  </ItemGroup>
+  -->
+
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>netcoreapp3.1</TargetFramework>
diff --git a/ConsoleApplication/nuget.config b/ConsoleApplication/nuget.config
new file mode 100644
index 0000000..31999dd
--- /dev/null
+++ b/ConsoleApplication/nuget.config
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <!--To inherit the global NuGet package sources remove the <clear/> line below -->
+    <clear />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+  <add key="signatureValidationMode" value="accept" />
+</configuration>
diff --git a/DataStoring.CSV/AuftraggeberRepository.cs b/DataStoring.CSV/AuftraggeberRepository.cs
new file mode 100644
index 0000000..0c1d968
--- /dev/null
+++ b/DataStoring.CSV/AuftraggeberRepository.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Models;
+using DataStoring.Contract;
+
+namespace DataStoring.CSV
+{
+    public class AuftraggeberRepository: IAuftraggeberRepository
+    {
+        public List<Auftraggeber> Query => File
+            .ReadAllLines("auftraggeber.csv")
+            .Select(l => l.Split(','))
+            .Select(p => new Auftraggeber
+            {
+                Id = int.Parse(p[0]),
+                Name = p[1],
+                Strasse = p[2],
+                Ort = p[3],
+                Tel = p[4],
+            })
+            .ToList();
+    }
+}
diff --git a/DataStoring.CSV/DataStoring.CSV.csproj b/DataStoring.CSV/DataStoring.CSV.csproj
new file mode 100644
index 0000000..9035512
--- /dev/null
+++ b/DataStoring.CSV/DataStoring.CSV.csproj
@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\Models\Models.csproj" />
+    <ProjectReference Include="..\DataStoring.Contract\DataStoring.Contract.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/DataStoring.Contract/DataStoring.Contract.csproj b/DataStoring.Contract/DataStoring.Contract.csproj
new file mode 100644
index 0000000..500c098
--- /dev/null
+++ b/DataStoring.Contract/DataStoring.Contract.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\Models\Models.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>
diff --git a/DataStoring.Contract/IAuftraggeberRepository.cs b/DataStoring.Contract/IAuftraggeberRepository.cs
new file mode 100644
index 0000000..4c7d7a7
--- /dev/null
+++ b/DataStoring.Contract/IAuftraggeberRepository.cs
@@ -0,0 +1,11 @@
+using System;
+using System.Collections.Generic;
+using Models;
+
+namespace DataStoring.Contract
+{
+    public interface IAuftraggeberRepository
+    {
+        List<Auftraggeber> Query {get;}
+    }
+}
diff --git a/Dichtheitsprüfung.sln b/Dichtheitsprüfung.sln
index a8627ac..72b93a4 100644
--- a/Dichtheitsprüfung.sln
+++ b/Dichtheitsprüfung.sln
@@ -15,7 +15,9 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Models", "Models\Models.csp
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ProtokollWriter", "ProtokollWriter\ProtokollWriter.csproj", "{9762AAF6-BB07-4416-9522-3D2A05C4216A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPFClient", "WPFClient\WPFClient.csproj", "{75CAC182-0861-4E01-88DF-52FF5CFAB3C2}"
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStoring.Contract", "DataStoring.Contract\DataStoring.Contract.csproj", "{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataStoring.CSV", "DataStoring.CSV\DataStoring.CSV.csproj", "{18E745A2-2D17-4C21-BD6F-521E681A9834}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -114,5 +116,29 @@ Global
 		{75CAC182-0861-4E01-88DF-52FF5CFAB3C2}.Release|x64.Build.0 = Release|Any CPU
 		{75CAC182-0861-4E01-88DF-52FF5CFAB3C2}.Release|x86.ActiveCfg = Release|Any CPU
 		{75CAC182-0861-4E01-88DF-52FF5CFAB3C2}.Release|x86.Build.0 = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|x64.Build.0 = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Debug|x86.Build.0 = Debug|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|x64.ActiveCfg = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|x64.Build.0 = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|x86.ActiveCfg = Release|Any CPU
+		{BDC2AC0C-8CD5-4B4F-840F-24EE31E3B06C}.Release|x86.Build.0 = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|x64.Build.0 = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Debug|x86.Build.0 = Debug|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|Any CPU.Build.0 = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|x64.ActiveCfg = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|x64.Build.0 = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|x86.ActiveCfg = Release|Any CPU
+		{18E745A2-2D17-4C21-BD6F-521E681A9834}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal
diff --git a/Models/Auftraggeber.cs b/Models/Auftraggeber.cs
index 6c787af..e768e01 100644
--- a/Models/Auftraggeber.cs
+++ b/Models/Auftraggeber.cs
@@ -4,10 +4,11 @@ using System.Collections.Generic;
 
 namespace Models {
     public class Auftraggeber {
-        public string Name ="";
-        public string Ort = "";
-        public string Strasse = "";
-        public string Tel = "";
+        public int Id {get;set;}
+        public string Name {get;set;}
+        public string Ort  {get;set;}
+        public string Strasse  {get;set;}
+        public string Tel {get;set;}
         public IEnumerable<Bauvorhaben> Baustellen = new List<Bauvorhaben>();
     }
 }
\ No newline at end of file
diff --git a/WPFClient/App.xaml b/WPFClient/App.xaml
deleted file mode 100644
index f63d388..0000000
--- a/WPFClient/App.xaml
+++ /dev/null
@@ -1,9 +0,0 @@
-<Application x:Class="WPFClient.App"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:local="clr-namespace:WPFClient"
-             StartupUri="MainWindow.xaml">
-    <Application.Resources>
-         
-    </Application.Resources>
-</Application>
diff --git a/WPFClient/App.xaml.cs b/WPFClient/App.xaml.cs
deleted file mode 100644
index 4122d91..0000000
--- a/WPFClient/App.xaml.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Configuration;
-using System.Data;
-using System.Linq;
-using System.Threading.Tasks;
-using System.Windows;
-
-namespace WPFClient
-{
-    /// <summary>
-    /// Interaction logic for App.xaml
-    /// </summary>
-    public partial class App : Application
-    {
-    }
-}
diff --git a/WPFClient/AssemblyInfo.cs b/WPFClient/AssemblyInfo.cs
deleted file mode 100644
index 2211234..0000000
--- a/WPFClient/AssemblyInfo.cs
+++ /dev/null
@@ -1,10 +0,0 @@
-using System.Windows;
-
-[assembly:ThemeInfo(
-    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
-                                     //(used if a resource is not found in the page,
-                                     // or application resource dictionaries)
-    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
-                                              //(used if a resource is not found in the page,
-                                              // app, or any theme specific resource dictionaries)
-)]
diff --git a/WPFClient/MainWindow.xaml b/WPFClient/MainWindow.xaml
deleted file mode 100644
index 544243c..0000000
--- a/WPFClient/MainWindow.xaml
+++ /dev/null
@@ -1,12 +0,0 @@
-<Window x:Class="WPFClient.MainWindow"
-        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-        xmlns:local="clr-namespace:WPFClient"
-        mc:Ignorable="d"
-        Title="MainWindow" Height="450" Width="800">
-    <Grid>
-
-    </Grid>
-</Window>
diff --git a/WPFClient/MainWindow.xaml.cs b/WPFClient/MainWindow.xaml.cs
deleted file mode 100644
index 9570038..0000000
--- a/WPFClient/MainWindow.xaml.cs
+++ /dev/null
@@ -1,28 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
-
-namespace WPFClient
-{
-    /// <summary>
-    /// Interaction logic for MainWindow.xaml
-    /// </summary>
-    public partial class MainWindow : Window
-    {
-        public MainWindow()
-        {
-            InitializeComponent();
-        }
-    }
-}
diff --git a/WPFClient/WPFClient.csproj b/WPFClient/WPFClient.csproj
deleted file mode 100644
index 502f559..0000000
--- a/WPFClient/WPFClient.csproj
+++ /dev/null
@@ -1,13 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
-  <PropertyGroup>
-    <OutputType>WinExe</OutputType>
-    <TargetFramework>net5.0-windows</TargetFramework>
-    <UseWPF>true</UseWPF>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="5.0.3" />
-  </ItemGroup>
-
-</Project>
diff --git a/nuget.config b/nuget.config
new file mode 100644
index 0000000..b40f45b
--- /dev/null
+++ b/nuget.config
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <!--To inherit the global NuGet package sources remove the <clear/> line below -->
+    <clear />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+    <add key="signatureValidationMode" value="accept" />
+  </packageSources>
+</configuration>