Archetektur angefangen

DataStoring.Contract/DataStoring.Contract.csproj

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

DataStoring.Contract/IKundenRepository.cs

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+using KanSan.CrossCutting.DataClasses;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace KanSan.DataStoring.Contract
+{
+    public interface IKundenRepository
+    {
+        List<Kunde> Query { get; }
+    }
+}

DataStoring.Contract/IRepository.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace KanSan.DataStoring.Contract
+{
+    public interface IRepository<TEntity> where TEntity : class 
+    {
+        void Delete(TEntity entityToDelete);
+        void Delete(int id);
+        IEnumerable<TEntity> GetAll(string include);
+        IEnumerable<TEntity> Get(
+            Expression<Func<TEntity, bool>> filter = null,
+            Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null,
+            string includeProperties = "");
+        TEntity GetByID(object id);
+        void Insert(TEntity entity);
+        void Update(TEntity entity);
+        IQueryable<TEntity> Include(params Expression<Func<TEntity, object>>[] includes);
+        IQueryable<TEntity> Query { get; }
+    }
+}