Archetektur angefangen

DataStoring.CSV/DataStoring.CSV.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\DataStoring.Contract\DataStoring.Contract.csproj" />
+  </ItemGroup>
+
+</Project>

DataStoring.CSV/KundenRepository.cs

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+using KanSan.CrossCutting.DataClasses;
+using KanSan.DataStoring.Contract;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace KanSan.DataStoring.CSV
+{
+    public class KundenRepository : IKundenRepository
+    {
+        public List<Kunde> Query => File
+            .ReadAllLines("kunden.csv")
+            .Select(l => l.Split(','))
+            .Select(p => new Kunde
+            {
+                ID = int.Parse(p[0]),
+                Vorname = p[1],
+                Nachname = p[2]
+            })
+            .ToList();
+    }
+}