Datenbank mit Test/Beispiel

GottfriedsNackenWebseite/DataAccess/Data/IUserData.cs

@@ -0,0 +1,12 @@
+using DataAccess.Models;
+
+namespace DataAccess.Data;
+
+public interface IUserData
+{
+    Task<IEnumerable<UserModel>> GetUsers();
+    Task<UserModel?> GetUser(int id);
+    Task InsertUser(UserModel user);
+    Task UpdateUser(UserModel user);
+    Task DeleteUser(int id);
+}

GottfriedsNackenWebseite/DataAccess/Data/UserData.cs

@@ -0,0 +1,43 @@
+using DataAccess.DbAccess;
+using DataAccess.Models;
+
+namespace DataAccess.Data;
+
+public class UserData : IUserData
+{
+    private readonly ISqlDataAccess _db;
+
+    public UserData(ISqlDataAccess db)
+    {
+        _db = db;
+    }
+
+    public Task<IEnumerable<UserModel>> GetUsers()
+    {
+        return _db.LoadData<UserModel, dynamic>("dbo.spUser_GetAll", new { });
+    }
+
+    public async Task<UserModel?> GetUser(int id)
+    {
+        IEnumerable<UserModel> results = await _db.LoadData<UserModel, dynamic>(
+            "dbo.spUser_Get", 
+            new { Id = id });
+
+        return results.FirstOrDefault();
+    }
+
+    public Task InsertUser(UserModel user)
+    {
+        return _db.SaveData("dbo.spUser_Insert", new { user.FirstName, user.LastName });
+    }
+
+    public Task UpdateUser(UserModel user)
+    {
+        return _db.SaveData("dbo.spUser_Update", user);
+    }
+
+    public Task DeleteUser(int id)
+    {
+        return _db.SaveData("dbo.spUser_Delete", new { Id = id });
+    }
+}

GottfriedsNackenWebseite/DataAccess/DataAccess.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.0.123" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Abstractions" Version="6.0.0" />
+    <PackageReference Include="System.Data.SqlClient" Version="4.8.3" />
+  </ItemGroup>
+
+</Project>

GottfriedsNackenWebseite/DataAccess/DbAccess/ISqlDataAccess.cs

@@ -0,0 +1,33 @@
+namespace DataAccess.DbAccess;
+
+/// <summary>
+/// Stellt Methoden zur Ausführung von CRUD-Operationen bereit.
+/// </summary>
+public interface ISqlDataAccess
+{
+    /// <summary>
+    /// Liest Daten aus der Datenbank (Read Operationen).
+    /// </summary>
+    /// <typeparam name="TData">Typ der Objekte die zurückgegeben werden.</typeparam>
+    /// <typeparam name="TParam">Typ des Objekts das die Parameter für die SQL-Query enthält.</typeparam>
+    /// <param name="storedProcedureName">Name der StoredProcedure die ausgeführt werden soll.</param>
+    /// <param name="parameters">Das Objekt das die Parameter enthält.</param>
+    /// <param name="connectionId">Der Name des ConnectionStrings der für die Verbindung verwendet werden soll.</param>
+    /// <returns>Die Ergebnisse der Anfrage.</returns>
+    Task<IEnumerable<TData>> LoadData<TData, TParam>(
+        string storedProcedureName,
+        TParam parameters,
+        string connectionId = "Default");
+
+    /// <summary>
+    /// Führt eine SQL-Anfrage aus, die keinen Rückgabewert hat (Create, Update und Delete Operationen).
+    /// </summary>
+    /// <typeparam name="TParam">Typ des Objekts das die Parameter für die SQL-Query enthält.</typeparam>
+    /// <param name="storedProcedureName">Name der StoredProcedure die ausgeführt werden soll.</param>
+    /// <param name="parameters">Das Objekt das die Parameter enthält.</param>
+    /// <param name="connectionId">Der Name des ConnectionStrings der für die Verbindung verwendet werden soll.</param>
+    Task SaveData<TParam>(
+        string storedProcedureName,
+        TParam parameters,
+        string connectionId = "Default");
+}

GottfriedsNackenWebseite/DataAccess/DbAccess/SqlDataAccess.cs

@@ -0,0 +1,38 @@
+using Dapper;
+using Microsoft.Extensions.Configuration;
+using System.Data;
+using System.Data.SqlClient;
+
+namespace DataAccess.DbAccess;
+
+public class SqlDataAccess : ISqlDataAccess
+{
+    private readonly IConfiguration _config;
+
+    public SqlDataAccess(IConfiguration config)
+    {
+        _config = config;
+    }
+
+    public async Task<IEnumerable<TData>> LoadData<TData, TParam>(
+        string storedProcedureName,
+        TParam parameters,
+        string connectionId = "Default")
+    {
+        using IDbConnection connection = new SqlConnection(_config.GetConnectionString(connectionId));
+
+        return await connection.QueryAsync<TData>(storedProcedureName, parameters,
+            commandType: CommandType.StoredProcedure);
+    }
+
+    public async Task SaveData<TParam>(
+        string storedProcedureName,
+        TParam parameters,
+        string connectionId = "Default")
+    {
+        using IDbConnection connection = new SqlConnection(_config.GetConnectionString(connectionId));
+
+        await connection.ExecuteAsync(storedProcedureName, parameters,
+            commandType: CommandType.StoredProcedure);
+    }
+}

GottfriedsNackenWebseite/DataAccess/Models/UserModel.cs

@@ -0,0 +1,8 @@
+namespace DataAccess.Models;
+
+public class UserModel
+{
+    public int Id { get; set; }
+    public string FirstName { get; set; } = string.Empty;
+    public string LastName { get; set; } = string.Empty;
+}

GottfriedsNackenWebseite/GottfriedsNackenDB/GottfriedsNackenDB.sqlproj

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="4.0">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <Name>GottfriedsNackenDB</Name>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectVersion>4.1</ProjectVersion>
+    <ProjectGuid>{79f8ac31-e467-4f7c-ac3b-cfadc3290750}</ProjectGuid>
+    <DSP>Microsoft.Data.Tools.Schema.Sql.Sql130DatabaseSchemaProvider</DSP>
+    <OutputType>Database</OutputType>
+    <RootPath>
+    </RootPath>
+    <RootNamespace>GottfriedsNackenDB</RootNamespace>
+    <AssemblyName>GottfriedsNackenDB</AssemblyName>
+    <ModelCollation>1033, CI</ModelCollation>
+    <DefaultFileStructure>BySchemaAndSchemaType</DefaultFileStructure>
+    <DeployToDatabase>True</DeployToDatabase>
+    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <TargetLanguage>CS</TargetLanguage>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <SqlServerVerification>False</SqlServerVerification>
+    <IncludeCompositeObjects>True</IncludeCompositeObjects>
+    <TargetDatabaseSet>True</TargetDatabaseSet>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <OutputPath>bin\Release\</OutputPath>
+    <BuildScriptName>$(MSBuildProjectName).sql</BuildScriptName>
+    <TreatWarningsAsErrors>False</TreatWarningsAsErrors>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <DefineDebug>false</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <OutputPath>bin\Debug\</OutputPath>
+    <BuildScriptName>$(MSBuildProjectName).sql</BuildScriptName>
+    <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <DefineDebug>true</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">11.0</VisualStudioVersion>
+    <!-- Default to the v11.0 targets path if the targets file for the current VS version is not found -->
+    <SSDTExists Condition="Exists('$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v$(VisualStudioVersion)\SSDT\Microsoft.Data.Tools.Schema.SqlTasks.targets')">True</SSDTExists>
+    <VisualStudioVersion Condition="'$(SSDTExists)' == ''">11.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Condition="'$(SQLDBExtensionsRefPath)' != ''" Project="$(SQLDBExtensionsRefPath)\Microsoft.Data.Tools.Schema.SqlTasks.targets" />
+  <Import Condition="'$(SQLDBExtensionsRefPath)' == ''" Project="$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v$(VisualStudioVersion)\SSDT\Microsoft.Data.Tools.Schema.SqlTasks.targets" />
+  <ItemGroup>
+    <Folder Include="Properties" />
+    <Folder Include="dbo" />
+    <Folder Include="dbo\Tables" />
+    <Folder Include="dbo\StoredProcedures" />
+  </ItemGroup>
+  <ItemGroup>
+    <Build Include="dbo\Tables\User.sql" />
+    <Build Include="dbo\StoredProcedures\spUser_GetAll.sql" />
+    <Build Include="dbo\StoredProcedures\spUser_Get.sql" />
+    <Build Include="dbo\StoredProcedures\spUser_Delete.sql" />
+    <Build Include="dbo\StoredProcedures\spUser_Insert.sql" />
+    <Build Include="dbo\StoredProcedures\spUser_Update.sql" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GottfriedsNackenDB.publish.xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <PostDeploy Include="Script.PostDeployment.sql" />
+  </ItemGroup>
+</Project>

GottfriedsNackenWebseite/GottfriedsNackenDB/Script.PostDeployment.sql

@@ -0,0 +1,10 @@
+/* Wird nur ausgeführt, wenn es keine Einträge in [dbo].[User] */
+IF not exists (SELECT 1 FROM [dbo].[User])
+BEGIN
+	INSERT INTO [dbo].[User] (FirstName, LastName)
+	VALUES
+		('Gottfried Wilhelm', 'Leibniz'),
+		('Albert', 'Einstein'),
+		('Curry', 'Wurst'),
+		('Brat', 'Wurst')
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/StoredProcedures/spUser_Delete.sql

@@ -0,0 +1,8 @@
+CREATE PROCEDURE [dbo].[spUser_Delete]
+	@Id int
+AS
+BEGIN
+	DELETE
+	FROM [dbo].[User]
+	WHERE Id = @Id;
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/StoredProcedures/spUser_Get.sql

@@ -0,0 +1,8 @@
+CREATE PROCEDURE [dbo].[spUser_Get]
+	@Id int
+AS
+BEGIN
+	SELECT Id, FirstName, LastName
+	FROM [dbo].[User]
+	WHERE Id = @Id;
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/StoredProcedures/spUser_GetAll.sql

@@ -0,0 +1,6 @@
+CREATE PROCEDURE [dbo].[spUser_GetAll]
+AS
+BEGIN
+	SELECT Id, FirstName, LastName
+	FROM [dbo].[User];
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/StoredProcedures/spUser_Insert.sql

@@ -0,0 +1,8 @@
+CREATE PROCEDURE [dbo].[spUser_Insert]
+	@FirstName nvarchar(50),
+	@LastName nvarchar(50)
+AS
+BEGIN
+	INSERT INTO [dbo].[User] (FirstName, LastName)
+	VALUES (@FirstName, @LastName);
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/StoredProcedures/spUser_Update.sql

@@ -0,0 +1,10 @@
+CREATE PROCEDURE [dbo].[spUser_Update]
+	@Id int,
+	@FirstName nvarchar(50),
+	@LastName nvarchar(50)
+AS
+BEGIN
+	UPDATE [dbo].[User]
+	SET FirstName = @FirstName, LastName = @LastName
+	WHERE Id = @Id;
+END

GottfriedsNackenWebseite/GottfriedsNackenDB/dbo/Tables/User.sql

@@ -0,0 +1,6 @@
+CREATE TABLE [dbo].[User]
+(
+	[Id] INT NOT NULL PRIMARY KEY IDENTITY, 
+    [FirstName] NVARCHAR(50) NOT NULL,
+    [LastName] NVARCHAR(50) NOT NULL
+)

GottfriedsNackenWebseite/GottfriedsNackenWebseite.sln

@@ -5,7 +5,11 @@ VisualStudioVersion = 17.1.32210.238
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GottfriedsNackenWebseite", "GottfriedsNackenWebseite\GottfriedsNackenWebseite.csproj", "{464DD643-DAD9-4E16-BB24-36F789ED4C15}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GottfriedsNackenUtility", "GottfriedsNackenUtility\GottfriedsNackenUtility.csproj", "{0122762F-9961-4D28-8AA9-0D6AE7630208}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "GottfriedsNackenUtility", "GottfriedsNackenUtility\GottfriedsNackenUtility.csproj", "{0122762F-9961-4D28-8AA9-0D6AE7630208}"
+EndProject
+Project("{00D1A9C2-B5F0-4AF3-8072-F6C62B433612}") = "GottfriedsNackenDB", "GottfriedsNackenDB\GottfriedsNackenDB.sqlproj", "{79F8AC31-E467-4F7C-AC3B-CFADC3290750}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataAccess", "DataAccess\DataAccess.csproj", "{023715EE-C9DB-417F-9B77-28BF48A30D41}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -21,6 +25,16 @@ Global
 		{0122762F-9961-4D28-8AA9-0D6AE7630208}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{0122762F-9961-4D28-8AA9-0D6AE7630208}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{0122762F-9961-4D28-8AA9-0D6AE7630208}.Release|Any CPU.Build.0 = Release|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Release|Any CPU.Build.0 = Release|Any CPU
+		{79F8AC31-E467-4F7C-AC3B-CFADC3290750}.Release|Any CPU.Deploy.0 = Release|Any CPU
+		{023715EE-C9DB-417F-9B77-28BF48A30D41}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{023715EE-C9DB-417F-9B77-28BF48A30D41}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{023715EE-C9DB-417F-9B77-28BF48A30D41}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{023715EE-C9DB-417F-9B77-28BF48A30D41}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

GottfriedsNackenWebseite/GottfriedsNackenWebseite/GottfriedsNackenWebseite.csproj

@@ -18,6 +18,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\DataAccess\DataAccess.csproj" />
     <ProjectReference Include="..\GottfriedsNackenUtility\GottfriedsNackenUtility.csproj" />
   </ItemGroup>
 

GottfriedsNackenWebseite/GottfriedsNackenWebseite/Pages/DatabaseTest.razor

@@ -0,0 +1,96 @@
+@page "/databasetest"
+
+@using DataAccess.Data
+@using DataAccess.Models
+@inject IUserData _userData
+
+<PageTitle>Database Test</PageTitle>
+
+<MudContainer MaxWidth="MaxWidth.Small">
+    <MudTable Items="@_users" Hover="true" Breakpoint="Breakpoint.Sm" Loading="_loading">
+        <ToolBarContent>
+            <MudText Typo="Typo.h6">Nutzer</MudText>
+            <MudSpacer />
+            <MudIconButton Icon="@Icons.Material.Filled.Refresh" OnClick="RefreshUserList" />
+        </ToolBarContent>
+
+        <HeaderContent>
+            <MudTh>Id</MudTh>
+            <MudTh>First Name</MudTh>
+            <MudTh>Last Name</MudTh>
+            <MudTh/>
+        </HeaderContent>
+        <RowTemplate>
+            <MudTd DataLabel="Nr">@context.Id</MudTd>
+            <MudTd DataLabel="First Name">@context.FirstName</MudTd>
+            <MudTd DataLabel="Last Name">@context.LastName</MudTd>
+            <MudTd>
+                <MudIconButton Icon="@Icons.Material.Filled.Delete" OnClick="() => DeleteUser(context)" />
+            </MudTd>
+        </RowTemplate>
+
+        <PagerContent>
+            <MudTablePager/>
+        </PagerContent>
+    </MudTable>
+    
+    <MudPaper Class="pa-4 mt-2">
+        <MudForm @bind-IsValid="_newUserValid" >
+
+            <MudText Typo="Typo.h4">Neuen Nutzer erstellen:</MudText>
+            <MudTextField T="string" Label="Vorname" @bind-Value="_newUser.FirstName" Immediate="true" Required="true" RequiredError="Vorname muss angegeben werden!"/>
+            <MudTextField T="string" Label="Nachname" @bind-Value="_newUser.LastName" Immediate="true" Required="true" RequiredError="Nachname muss angegeben werden!"/>
+            <MudButton Class="mt-2" Variant="Variant.Filled" Color="Color.Primary" Disabled="!_newUserValid" OnClick="AddUser">Hinzufügen</MudButton>
+        </MudForm>
+    </MudPaper>
+
+</MudContainer>
+
+@code {
+    private bool _newUserValid;
+
+    private UserModel _newUser = new();
+
+    private bool _loading;
+
+    private IEnumerable<UserModel> _users = Enumerable.Empty<UserModel>();
+
+    protected override async Task OnInitializedAsync()
+    {
+        await RefreshUserList();
+
+        await base.OnInitializedAsync();
+    }
+
+    private async Task RefreshUserList()
+    {
+        _loading = true;
+
+        try
+        {
+            _users = await _userData.GetUsers();
+        }
+        catch (Exception e)
+        {
+            Console.WriteLine($"Failed to load users. Exception: {e}");
+        }
+
+        _loading = false;
+    }
+
+    private async Task AddUser()
+    {
+        await _userData.InsertUser(_newUser);
+
+        await RefreshUserList();
+
+        _newUser = new UserModel();
+    }
+    
+    private async Task DeleteUser(UserModel user)
+    {
+        await _userData.DeleteUser(user.Id);
+        
+        await RefreshUserList();
+    }
+}

GottfriedsNackenWebseite/GottfriedsNackenWebseite/Program.cs

@@ -1,3 +1,5 @@
+using DataAccess.Data;
+using DataAccess.DbAccess;
 using GottfriedsNackenWebseite.Data;
 using Microsoft.AspNetCore.Components;
 using Microsoft.AspNetCore.Components.Web;
@@ -11,6 +13,9 @@ builder.Services.AddServerSideBlazor();
 builder.Services.AddSingleton<WeatherForecastService>();
 builder.Services.AddMudServices();
 
+builder.Services.AddSingleton<ISqlDataAccess, SqlDataAccess>();
+builder.Services.AddSingleton<IUserData, UserData>();
+
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.

GottfriedsNackenWebseite/GottfriedsNackenWebseite/Shared/NavMenu.razor

@@ -23,6 +23,9 @@
     <MudNavLink Href="numberle" Match=NavLinkMatch.Prefix>
         Nacken Numberle
     </MudNavLink>
+    <MudNavLink Href="databasetest" Match=NavLinkMatch.Prefix>
+        Datenbank Test
+    </MudNavLink>
 </MudNavMenu>
 @*
 <div class="top-row ps-3 navbar navbar-dark">

GottfriedsNackenWebseite/GottfriedsNackenWebseite/appsettings.Development.json

@@ -5,5 +5,5 @@
             "Default": "Information",
             "Microsoft.AspNetCore": "Warning"
         }
-  }
+    },
 }

GottfriedsNackenWebseite/GottfriedsNackenWebseite/appsettings.json

@@ -5,5 +5,8 @@
             "Microsoft.AspNetCore": "Warning"
         }
     },
-  "AllowedHosts": "*"
+    "AllowedHosts": "*",
+    "ConnectionStrings": {
+        "Default": "PLACEHOLDER"
+    }
 }