Buildingsite list hinzugefügt

DaSaSo.ConsoleApp/Program.cs

@@ -6,7 +6,7 @@ using DaSaSo.EntityFramework;
 using DaSaSo.EntityFramework.Services;
 using System.Diagnostics;
 
-IDataService<Client> clientService = new GenericDataService<Client>(new DaSaSoDbContextFactory());
+IDataService<Client> clientService = new GenericDataService<Client>(new DaSaSoDbContextFactory(""));
 clientService.Create(new Client()
 {
     Firstname = "Cynthia",

DaSaSo.Domain/Model/Buildingsite.cs

@@ -8,6 +8,7 @@ namespace DaSaSo.Domain.Model
 {
     public class Buildingsite : DomainObject
     {
+        public Project Project { get; set; }
         public string BuildingSiteNumber { get; set; }
         public string Country { get; set; }
         public string ContactPerson { get; set; }

DaSaSo.EntityFramework/DaSaSoDbContextFactory.cs

@@ -8,10 +8,14 @@ using System.Threading.Tasks;
 
 namespace DaSaSo.EntityFramework
 {
-    public class DaSaSoDbContextFactory
+    public class DaSaSoDbContextFactory : IDesignTimeDbContextFactory<DaSaSoDbContext>
     {
         private readonly string _connectionString;
 
+        public DaSaSoDbContextFactory()
+        {
+
+        }
         public DaSaSoDbContextFactory(string connectionString)
         {
             _connectionString = connectionString;
@@ -20,9 +24,18 @@ namespace DaSaSo.EntityFramework
         public DaSaSoDbContext CreateDbContext()
         {
             var options = new DbContextOptionsBuilder<DaSaSoDbContext>();
+            //_connectionString = "Host = localhost; Database = dasaso; Username = kansan; Password = kansan";
             options.UseNpgsql(_connectionString);
             DaSaSoDbContext result = new DaSaSoDbContext(options.Options);
             return result;
         }
+
+        public DaSaSoDbContext CreateDbContext(string[]? args = null)
+        {
+            var options = new DbContextOptionsBuilder<DaSaSoDbContext>();
+            options.UseNpgsql("Host = localhost; Database = dasaso; Username = kansan; Password = kansan");
+            DaSaSoDbContext result = new DaSaSoDbContext(options.Options);
+            return result;
+        }
     }
 }

DaSaSo.EntityFramework/Migrations/20210915174236_ProjectReferenzAdded.Designer.cs

@@ -0,0 +1,176 @@
+// <auto-generated />
+using System;
+using DaSaSo.EntityFramework;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+namespace DaSaSo.EntityFramework.Migrations
+{
+    [DbContext(typeof(DaSaSoDbContext))]
+    [Migration("20210915174236_ProjectReferenzAdded")]
+    partial class ProjectReferenzAdded
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("Relational:MaxIdentifierLength", 63)
+                .HasAnnotation("ProductVersion", "6.0.0-preview.7.21378.4")
+                .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Buildingsite", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+                    b.Property<string>("BuildingSiteNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ContactPerson")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Country")
+                        .HasColumnType("text");
+
+                    b.Property<int?>("ProjectId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProjectId");
+
+                    b.ToTable("Buildingsites");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Client", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+                    b.Property<string>("Country")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Firstname")
+                        .HasColumnType("text");
+
+                    b.Property<string>("LastName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Postcode")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Street")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Clients");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Project", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+                    b.Property<int?>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClientId");
+
+                    b.ToTable("Projects");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.SewerObjects", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer")
+                        .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
+
+                    b.Property<int?>("BuildingSiteId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("DN")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("ObjektName")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PointFrom")
+                        .HasColumnType("text");
+
+                    b.Property<string>("PointTo")
+                        .HasColumnType("text");
+
+                    b.Property<decimal>("SewerLength")
+                        .HasColumnType("numeric");
+
+                    b.Property<string>("StreetName")
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("BuildingSiteId");
+
+                    b.ToTable("SewerObjects");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Buildingsite", b =>
+                {
+                    b.HasOne("DaSaSo.Domain.Model.Project", "Project")
+                        .WithMany("BuildingSites")
+                        .HasForeignKey("ProjectId");
+
+                    b.Navigation("Project");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Project", b =>
+                {
+                    b.HasOne("DaSaSo.Domain.Model.Client", "Client")
+                        .WithMany("Projects")
+                        .HasForeignKey("ClientId");
+
+                    b.Navigation("Client");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.SewerObjects", b =>
+                {
+                    b.HasOne("DaSaSo.Domain.Model.Buildingsite", "BuildingSite")
+                        .WithMany("SewerObjects")
+                        .HasForeignKey("BuildingSiteId");
+
+                    b.Navigation("BuildingSite");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Buildingsite", b =>
+                {
+                    b.Navigation("SewerObjects");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Client", b =>
+                {
+                    b.Navigation("Projects");
+                });
+
+            modelBuilder.Entity("DaSaSo.Domain.Model.Project", b =>
+                {
+                    b.Navigation("BuildingSites");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

DaSaSo.EntityFramework/Migrations/20210915174236_ProjectReferenzAdded.cs

@@ -0,0 +1,331 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+namespace DaSaSo.EntityFramework.Migrations
+{
+    public partial class ProjectReferenzAdded : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Projects_Clients_ClientId",
+                table: "Projects");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_SewerObjects_Buildingsites_BuildingSiteId",
+                table: "SewerObjects");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "StreetName",
+                table: "SewerObjects",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "PointTo",
+                table: "SewerObjects",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "PointFrom",
+                table: "SewerObjects",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "ObjektName",
+                table: "SewerObjects",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "BuildingSiteId",
+                table: "SewerObjects",
+                type: "integer",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "integer");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Name",
+                table: "Projects",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "ClientId",
+                table: "Projects",
+                type: "integer",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "integer");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Street",
+                table: "Clients",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Postcode",
+                table: "Clients",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "LastName",
+                table: "Clients",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Firstname",
+                table: "Clients",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Country",
+                table: "Clients",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Country",
+                table: "Buildingsites",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "ContactPerson",
+                table: "Buildingsites",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "BuildingSiteNumber",
+                table: "Buildingsites",
+                type: "text",
+                nullable: true,
+                oldClrType: typeof(string),
+                oldType: "text");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Projects_Clients_ClientId",
+                table: "Projects",
+                column: "ClientId",
+                principalTable: "Clients",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_SewerObjects_Buildingsites_BuildingSiteId",
+                table: "SewerObjects",
+                column: "BuildingSiteId",
+                principalTable: "Buildingsites",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Projects_Clients_ClientId",
+                table: "Projects");
+
+            migrationBuilder.DropForeignKey(
+                name: "FK_SewerObjects_Buildingsites_BuildingSiteId",
+                table: "SewerObjects");
+
+            migrationBuilder.AlterColumn<string>(
+                name: "StreetName",
+                table: "SewerObjects",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "PointTo",
+                table: "SewerObjects",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "PointFrom",
+                table: "SewerObjects",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "ObjektName",
+                table: "SewerObjects",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "BuildingSiteId",
+                table: "SewerObjects",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "integer",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Name",
+                table: "Projects",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<int>(
+                name: "ClientId",
+                table: "Projects",
+                type: "integer",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "integer",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Street",
+                table: "Clients",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Postcode",
+                table: "Clients",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "LastName",
+                table: "Clients",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Firstname",
+                table: "Clients",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Country",
+                table: "Clients",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "Country",
+                table: "Buildingsites",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "ContactPerson",
+                table: "Buildingsites",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AlterColumn<string>(
+                name: "BuildingSiteNumber",
+                table: "Buildingsites",
+                type: "text",
+                nullable: false,
+                defaultValue: "",
+                oldClrType: typeof(string),
+                oldType: "text",
+                oldNullable: true);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Projects_Clients_ClientId",
+                table: "Projects",
+                column: "ClientId",
+                principalTable: "Clients",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_SewerObjects_Buildingsites_BuildingSiteId",
+                table: "SewerObjects",
+                column: "BuildingSiteId",
+                principalTable: "Buildingsites",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Cascade);
+        }
+    }
+}

DaSaSo.EntityFramework/Migrations/DaSaSoDbContextModelSnapshot.cs

@@ -27,15 +27,12 @@ namespace DaSaSo.EntityFramework.Migrations
                         .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
 
                     b.Property<string>("BuildingSiteNumber")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("ContactPerson")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("Country")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<int?>("ProjectId")
@@ -56,23 +53,18 @@ namespace DaSaSo.EntityFramework.Migrations
                         .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
 
                     b.Property<string>("Country")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("Firstname")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("LastName")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("Postcode")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("Street")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.HasKey("Id");
@@ -87,11 +79,10 @@ namespace DaSaSo.EntityFramework.Migrations
                         .HasColumnType("integer")
                         .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
 
-                    b.Property<int>("ClientId")
+                    b.Property<int?>("ClientId")
                         .HasColumnType("integer");
 
                     b.Property<string>("Name")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.HasKey("Id");
@@ -108,29 +99,25 @@ namespace DaSaSo.EntityFramework.Migrations
                         .HasColumnType("integer")
                         .HasAnnotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn);
 
-                    b.Property<int>("BuildingSiteId")
+                    b.Property<int?>("BuildingSiteId")
                         .HasColumnType("integer");
 
                     b.Property<int>("DN")
                         .HasColumnType("integer");
 
                     b.Property<string>("ObjektName")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("PointFrom")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<string>("PointTo")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.Property<decimal>("SewerLength")
                         .HasColumnType("numeric");
 
                     b.Property<string>("StreetName")
-                        .IsRequired()
                         .HasColumnType("text");
 
                     b.HasKey("Id");
@@ -142,18 +129,18 @@ namespace DaSaSo.EntityFramework.Migrations
 
             modelBuilder.Entity("DaSaSo.Domain.Model.Buildingsite", b =>
                 {
-                    b.HasOne("DaSaSo.Domain.Model.Project", null)
+                    b.HasOne("DaSaSo.Domain.Model.Project", "Project")
                         .WithMany("BuildingSites")
                         .HasForeignKey("ProjectId");
+
+                    b.Navigation("Project");
                 });
 
             modelBuilder.Entity("DaSaSo.Domain.Model.Project", b =>
                 {
                     b.HasOne("DaSaSo.Domain.Model.Client", "Client")
                         .WithMany("Projects")
-                        .HasForeignKey("ClientId")
+                        .HasForeignKey("ClientId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.Navigation("Client");
                 });
@@ -162,9 +149,7 @@ namespace DaSaSo.EntityFramework.Migrations
                 {
                     b.HasOne("DaSaSo.Domain.Model.Buildingsite", "BuildingSite")
                         .WithMany("SewerObjects")
-                        .HasForeignKey("BuildingSiteId")
+                        .HasForeignKey("BuildingSiteId");
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
 
                     b.Navigation("BuildingSite");
                 });

DaSaSo.EntityFramework/Services/BuildingsiteDataService.cs

@@ -0,0 +1,59 @@
+using DaSaSo.Domain.Model;
+using DaSaSo.Domain.Services;
+using DaSaSo.EntityFramework.Services.Common;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.EntityFramework.Services
+{
+    public class BuildingsiteDataService : IDataService<Buildingsite>
+    {
+        private readonly DaSaSoDbContextFactory _contextFactory;
+        private readonly NonQueryDataService<Buildingsite> _nonQueryDataService;
+
+        public BuildingsiteDataService(DaSaSoDbContextFactory contextFactory)
+        {
+            _contextFactory = contextFactory;
+            _nonQueryDataService = new NonQueryDataService<Buildingsite>(contextFactory);
+        }
+        public async Task<Buildingsite> Create(Buildingsite entity)
+        {
+            return await _nonQueryDataService.Create(entity);
+        }
+
+        public async Task<bool> Delete(int id)
+        {
+            return await _nonQueryDataService.Delete(id);
+        }
+
+        public Task<Buildingsite> Get(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public Task<IEnumerable<Buildingsite>> GetAll()
+        {
+            throw new NotImplementedException();
+        }
+
+        public async Task<IEnumerable<Buildingsite>> GetAllByProjekt(Project project)
+        {
+            // Get Clientid
+            int id = project.Id;
+            using (DaSaSoDbContext context = _contextFactory.CreateDbContext())
+            {
+                IEnumerable<Buildingsite> entities = await context.Buildingsites.Where(x => x.Project.Id == id).ToListAsync();
+                return entities;
+            }
+        }
+
+        public async Task<Buildingsite> Update(int id, Buildingsite entity)
+        {
+            return await _nonQueryDataService.Update(id, entity);
+        }
+    }
+}

DaSaSo.ViewModel/BuildingsiteListViewModel.cs

@@ -0,0 +1,45 @@
+using DaSaSo.Domain.Model;
+using DaSaSo.Domain.Services;
+using DaSaSo.EntityFramework.Services;
+using DaSaSo.ViewModel.Interface;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.ViewModel
+{
+    public class BuildingsiteListViewModel: BaseViewModel
+    {
+        public ObservableCollection<Buildingsite> Buildingsites { get; }
+
+        private readonly IActualProject _actualProject;
+        private readonly IRenavigator _renavigator;
+        private readonly BuildingsiteDataService _buildingSiteDataService;
+
+        public BuildingsiteListViewModel(IDataService<Buildingsite> buildingSiteDataService, IActualProject actualProject, IRenavigator renavigator)
+        {
+            _actualProject = actualProject;
+            _renavigator = renavigator;
+            _buildingSiteDataService = buildingSiteDataService as BuildingsiteDataService;
+            Buildingsites = new ObservableCollection<Buildingsite>();
+
+            LoadBuildingsites();
+        }
+
+        private async void LoadBuildingsites()
+        {
+            var buildingsites = await _buildingSiteDataService.GetAllByProjekt(_actualProject.AktuellProjekt);
+            InitCollection(Buildingsites, buildingsites);
+        }
+
+        private void InitCollection(ObservableCollection<Buildingsite> target, IEnumerable<Buildingsite> source)
+        {
+            target.Clear();
+            foreach (var i in source)
+                target.Add(i);
+        }
+    }
+}

DaSaSo.ViewModel/Commands/SelectProjectCommand.cs

@@ -0,0 +1,27 @@
+using DaSaSo.ViewModel.Interface;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DaSaSo.ViewModel.Commands
+{
+    public class SelectProjectCommand : AsyncCommandBase
+    {
+        private readonly IActualProject _actualProject;
+        private readonly ProjectListViewModel _projectListViewModel;
+
+        public SelectProjectCommand(IActualProject actualProject, ProjectListViewModel projectListViewModel)
+        {
+            _actualProject = actualProject;
+            _projectListViewModel = projectListViewModel;
+        }
+
+        public override async Task ExecuteAsync(object? parameter)
+        {
+            var s = _projectListViewModel.SelectedProject;
+            _actualProject.SetProject(s);
+        }
+    }
+}

DaSaSo.ViewModel/Factories/ViewModelAbstractFactory.cs

@@ -17,18 +17,20 @@ namespace DaSaSo.ViewModel.Factories
         private CreateViewModel<ClientListViewModel> _createClientListViewModel;
         private CreateViewModel<ClientEditViewModel> _createClientEditViewModel;
         private CreateViewModel<ProjectListViewModel> _createProjektListViewModel;
+        private CreateViewModel<BuildingsiteListViewModel> _createBuildingsiteListViewModel;
 
         public ViewModelAbstractFactory(
             CreateViewModel<HomeViewModel> createHomeViewModel,
             CreateViewModel<ClientListViewModel> createClientListViewModel,
             CreateViewModel<ClientEditViewModel> createClientEditViewModel,
-            CreateViewModel<ProjectListViewModel> createProjektListViewModel
+            CreateViewModel<ProjectListViewModel> createProjektListViewModel,
-            )
+            CreateViewModel<BuildingsiteListViewModel> createBuildingsiteListViewModel)
         {
             _createHomeViewModel = createHomeViewModel;
             _createClientListViewModel = createClientListViewModel;
             _createClientEditViewModel = createClientEditViewModel;
             _createProjektListViewModel = createProjektListViewModel;
+            _createBuildingsiteListViewModel = createBuildingsiteListViewModel;
         }
 
         public BaseViewModel CreateViewModel(EViewType viewType)
@@ -44,9 +46,9 @@ namespace DaSaSo.ViewModel.Factories
                     return _createClientEditViewModel();
                 case EViewType.Projects:
                     return _createProjektListViewModel();
-                /*case EViewType.Buildingsites:
+                case EViewType.Buildingsites:
-                    break;
+                    return _createBuildingsiteListViewModel();
-                case EViewType.SewerObjects:
+                /*case EViewType.SewerObjects:
                     break;
                 */
                 default:

DaSaSo.ViewModel/ProjectListViewModel.cs

@@ -1,6 +1,7 @@
 using DaSaSo.Domain.Model;
 using DaSaSo.Domain.Services;
 using DaSaSo.EntityFramework.Services;
+using DaSaSo.ViewModel.Commands;
 using DaSaSo.ViewModel.Interface;
 using System;
 using System.Collections.Generic;
@@ -9,6 +10,7 @@ using System.Diagnostics;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Windows.Input;
 
 namespace DaSaSo.ViewModel
 {
@@ -19,15 +21,31 @@ namespace DaSaSo.ViewModel
         private IActualProject actualProject;
         private IRenavigator renavigator;
         public ObservableCollection<Project> Projekte { get; }
+        private Project? _selectedProject;
 
+        public Project SelectedProject
+        {
+            get => _selectedProject;
+            set
+            {
+                if(_selectedProject != value)
+                {
+                    _selectedProject = value;
+                    OnPropertyChanged();
+                }
+            }
+        }
 
+        public ICommand SelectCommand { get; set; }
         public ProjectListViewModel(IDataService<Project> genericDataService, IActualProject actualProject, IRenavigator renavigator)
         {
             Projekte = new ObservableCollection<Project>();
+            if (genericDataService == null) throw new ArgumentNullException("genericDataService");
             
             this.genericDataService = (genericDataService as ProjectDataService);
             this.actualProject = actualProject;
             this.renavigator = renavigator;
+            SelectCommand = new SelectProjectCommand(actualProject, this);
             LoadProjecte();
         }
 

DaSaSo.Wpf/App.xaml.cs

@@ -42,6 +42,7 @@ namespace DaSaSo.Wpf
                     services.AddSingleton<DaSaSoDbContextFactory>(new DaSaSoDbContextFactory(connectionString));
                     services.AddSingleton<IDataService<Client>, ClientDataService>();
                     services.AddSingleton<IDataService<Project>, ProjectDataService>();
+                    services.AddSingleton<IDataService<Buildingsite>, BuildingsiteDataService>();
                     services.AddSingleton<ClientListViewModel>();
 
 
@@ -79,6 +80,15 @@ namespace DaSaSo.Wpf
                                 services.GetRequiredService<INavigator>()));
                     });
 
+                    services.AddSingleton<CreateViewModel<BuildingsiteListViewModel>>(services =>
+                    {
+                        return () => new BuildingsiteListViewModel(
+                            services.GetRequiredService<IDataService<Buildingsite>>(),
+                            services.GetRequiredService<IActualProject>(),
+                            new ViewModelDelegateRenavigator(
+                                services.GetRequiredService<INavigator>()));
+                    });
+
                     //services.AddSingleton<INavigator, Navigator>();
                     services.AddScoped<IActualProject, ActualProject>();
                     services.AddScoped<INavigator, Navigator>();

DaSaSo.Wpf/DaSaSo.Wpf.csproj.user

@@ -10,6 +10,9 @@
     <Compile Update="Controls\NavigationBar.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Update="View\Buildingsites\BuildingSiteListView.xaml.cs">
+      <SubType>Code</SubType>
+    </Compile>
     <Compile Update="View\Client\ClientEditView.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
@@ -33,6 +36,9 @@
     <Page Update="Styles\Navigation_Style.xaml">
       <SubType>Designer</SubType>
     </Page>
+    <Page Update="View\Buildingsites\BuildingSiteListView.xaml">
+      <SubType>Designer</SubType>
+    </Page>
     <Page Update="View\Client\ClientEditView.xaml">
       <SubType>Designer</SubType>
     </Page>

DaSaSo.Wpf/View/Buildingsites/BuildingSiteListView.xaml

@@ -0,0 +1,12 @@
+<UserControl x:Class="DaSaSo.Wpf.View.Buildingsites.BuildingSiteListView"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:DaSaSo.Wpf.View.Buildingsites"
+             mc:Ignorable="d" 
+             d:DesignHeight="450" d:DesignWidth="800">
+    <Grid>
+        <DataGrid ItemsSource="{Binding Buildingsites}" />
+    </Grid>
+</UserControl>

DaSaSo.Wpf/View/Buildingsites/BuildingSiteListView.xaml.cs

@@ -0,0 +1,28 @@
+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 DaSaSo.Wpf.View.Buildingsites
+{
+    /// <summary>
+    /// Interaction logic for BuildingSiteListView.xaml
+    /// </summary>
+    public partial class BuildingSiteListView : UserControl
+    {
+        public BuildingSiteListView()
+        {
+            InitializeComponent();
+        }
+    }
+}

DaSaSo.Wpf/View/Project/ProjectListView.xaml

@@ -7,8 +7,12 @@
              mc:Ignorable="d" 
              d:DesignHeight="450" d:DesignWidth="800">
     <Grid>
-        <DataGrid ItemsSource="{Binding Projekte}">
+        <StackPanel>
+            <DataGrid IsReadOnly="True" ItemsSource="{Binding Projekte}" SelectedItem="{Binding SelectedProject}">
+
+            </DataGrid>
+            <Button Content="Selektiere" Command="{Binding SelectCommand}" />
+        </StackPanel>
 
-        </DataGrid>
     </Grid>
 </UserControl>

DaSaSo.Wpf/Window/MainWindow.xaml

@@ -5,6 +5,7 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:ClientViews="clr-namespace:DaSaSo.Wpf.View.Client"
         xmlns:ProjektViews="clr-namespace:DaSaSo.Wpf.View.Project"
+        xmlns:BuildingsiteViews="clr-namespace:DaSaSo.Wpf.View.Buildingsites"
         xmlns:controls="clr-namespace:DaSaSo.Wpf.Controls"
         xmlns:View="clr-namespace:DaSaSo.Wpf.View"
         xmlns:local="clr-namespace:DaSaSo.Wpf" xmlns:viewmodel="clr-namespace:DaSaSo.ViewModel;assembly=DaSaSo.ViewModel" d:DataContext="{d:DesignInstance Type=viewmodel:MainWindowViewModel}"
@@ -23,6 +24,9 @@
         <DataTemplate DataType="{x:Type viewmodel:HomeViewModel}">
             <View:HomeView />
         </DataTemplate>
+        <DataTemplate DataType="{x:Type viewmodel:BuildingsiteListViewModel}">
+            <BuildingsiteViews:BuildingSiteListView />
+        </DataTemplate>
     </Window.Resources>
     <Grid>
         <Grid.ColumnDefinitions>

DaSaSo.Wpf/appsettings.json

@@ -1,5 +1,5 @@
 {
   "ConnectionStrings": {
-    "default": "Host = localhoste; Database = dasaso; Username = kansan; Password = kansan"
+    "default": "Host = localhost; Database = dasaso; Username = kansan; Password = kansan"
   }
 }