Add project files.

SQLite_test.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35919.96 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SQLite_test", "SQLite_test\SQLite_test.csproj", "{164810E3-EA38-48C7-834F-3252AC1C9069}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{164810E3-EA38-48C7-834F-3252AC1C9069}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{164810E3-EA38-48C7-834F-3252AC1C9069}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{164810E3-EA38-48C7-834F-3252AC1C9069}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{164810E3-EA38-48C7-834F-3252AC1C9069}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {BA6C2E1F-3F6F-4F8C-81CB-E4DB2F060DE2}
+	EndGlobalSection
+EndGlobal

SQLite_test/App.xaml

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+<Application x:Class="SQLite_test.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:SQLite_test"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

SQLite_test/App.xaml.cs

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+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace SQLite_test
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+
+}

SQLite_test/AssemblyInfo.cs

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+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)
+)]

SQLite_test/Classes/Crud.cs

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+using System;
+using System.Collections.Generic;
+using System.Data.Entity.Migrations.Model;
+using System.Data.SQLite;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SQLite_test.Classes
+{
+    internal class Crud
+    {
+
+        private SQLiteConnection _connection;
+        string connectionString = "Data Source=mydatabase.db;Version=3;";
+        
+
+        // Connection to the database would be established here
+        public Crud()
+        {
+            // Initialize database connection or any other setup
+            _connection = new SQLiteConnection(connectionString);
+            try
+            {
+                _connection.Open();
+                Debug.WriteLine("Verbinding met de database is geopend!");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"Fout bij het openen van de database: {ex.Message}");
+            }
+        }
+
+
+        protected void Add()
+        {
+            // implement Add logic here
+        }
+
+        protected void Create() 
+        {
+            // Implement create logic here
+        }
+
+        protected void Read()
+        {
+            // Implement read logic here
+        }
+
+        protected void Delete()
+        {
+            // Implement delete logic here
+        }   
+
+    }
+}

SQLite_test/Classes/User.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SQLite_test.Classes
+{
+    internal class User : Crud
+    {
+
+        // call inherited methods from Crud class
+        public void AddUser()
+        {
+            Add();
+            
+        }
+
+        public void CreateUser()
+        {
+            Create();
+        }
+
+        public void ReadUser()
+        {
+            Read();
+        }
+
+        public void DeleteUser()
+        {
+            Delete();
+        }
+
+
+    }
+}

SQLite_test/MainWindow.xaml

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+<Window x:Class="SQLite_test.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:SQLite_test"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <StackPanel Grid.Row="0">
+            <Button Click="AddRow" Height="100px" Content="Add"/> 
+            <Button Click="DeleteRow" Height="100px" Content="Delete"/> 
+        </StackPanel>
+    </Grid>
+</Window>

SQLite_test/MainWindow.xaml.cs

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+using System.Data.SQLite;
+using System.Diagnostics;
+using System.Text;
+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 SQLite_test
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+
+
+        private SQLiteConnection _connection;
+        public MainWindow()
+        {
+            InitializeComponent();
+            CreateConnectionToDB();
+        }
+
+        private void CreateConnectionToDB()
+        {
+
+            Classes.User user = new Classes.User();
+            
+
+
+
+            string connectionString = "Data Source=mydatabase.db;Version=3;";
+            _connection = new SQLiteConnection(connectionString);
+            
+            try
+            {
+                _connection.Open();
+                Debug.WriteLine("Verbinding met de database is geopend!");
+            }
+            catch (Exception ex)
+            {
+                Debug.WriteLine($"Fout bij het openen van de database: {ex.Message}");
+            }
+            
+        }
+
+
+
+        private void AddRow(object sender, RoutedEventArgs e)
+        {
+            // first create a table in database if not exists
+            CreateConnectionToDB();
+
+            string tablename = "Users";
+            string createTableQuery = ($"CREATE TABLE IF NOT EXISTS {tablename} (Id INTEGER PRIMARY KEY AUTOINCREMENT, Name TEXT, Age INT)");
+            using (SQLiteCommand command = new SQLiteCommand(createTableQuery, _connection))
+            {
+                try
+                {
+                    command.ExecuteNonQuery();
+                    Debug.WriteLine("Tabel is aangemaakt of bestaat al.");
+                    // Now insert a new row
+                    string insertQuery = $"INSERT INTO {tablename} (Name, Age) VALUES (@Name, @Age)";
+                    using (SQLiteCommand insertCommand = new SQLiteCommand(insertQuery, _connection))
+                    {
+                        insertCommand.Parameters.AddWithValue("@Name", "Nieuwe Naam");
+                        insertCommand.Parameters.AddWithValue("@Age", 18);
+                        insertCommand.ExecuteNonQuery();
+                        Debug.WriteLine("Nieuwe user is toegevoegd.");
+                    }
+                }
+                catch (Exception ex)
+                {
+                    Debug.WriteLine($"Fout bij het aanmaken van de tabel: {ex.Message}");
+                }
+            }
+        }
+
+        private void DeleteRow(object sender, RoutedEventArgs e)
+        {
+            // inputbox
+            string input = Microsoft.VisualBasic.Interaction.InputBox("Voer de ID in van de rij die u wilt verwijderen:", "Rij Verwijderen", "", -1, -1);
+            Debug.WriteLine($"Input: {input}");
+        }
+    }
+}

SQLite_test/SQLite_test.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Data.SQLite" Version="1.0.119" />
+  </ItemGroup>
+
+</Project>