Curso C# - Entity Framework

School/Program.cs

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+namespace School;
+
+public class SchoolMain
+{
+    public static void Main(string[] args)
+    {
+        SchoolContext database = new SchoolContext();
+        database.Database.EnsureDeleted();
+        database.Database.EnsureCreated();
+
+        database.Teachers.Add(new Teacher { Name = "Rosana" });
+        database.Teachers.Add(new Teacher { Name = "Pedro" });
+        database.SaveChanges();
+
+        StartProgram:
+
+        Console.WriteLine("Menu:");
+        Console.WriteLine("1 - Visualizar dados");
+        Console.WriteLine("2 - Inserir dados");
+        Console.WriteLine("3 - Atualizar dados");
+        Console.WriteLine("4 - Remover dados");
+        Console.WriteLine("5 - Visualizar pessoas educadoras");
+
+        int option = int.Parse(Console.ReadLine()!);
+
+        switch(option) {
+            case 1:
+                SelectStudents(database);
+                goto StartProgram;
+            case 2:
+                InsertStudents(database);
+                goto StartProgram;
+            case 3:
+                UpdateStudent(database);
+                goto StartProgram;
+            case 4:
+                DeleteStudent(database);
+                goto StartProgram;
+            case 5:
+                SelectTeachers(database);
+                goto StartProgram;
+
+        }
+
+
+    }
+
+    public static void SelectStudents( SchoolContext database)
+    {
+        Console.Clear();
+        foreach(Student student in database.Students)
+        {
+            Console.WriteLine($"{student.Id} - {student.Name} - {student.Course} - Pessoa Educadora: {student.Teacher.Name}");
+        }
+    }
+
+
+    public static void SelectTeachers( SchoolContext database)
+    {
+        Console.Clear();
+        foreach(Teacher teacher in database.Teachers)
+        {
+            Console.WriteLine($"{teacher.Id} - {teacher.Name}");
+            Console.WriteLine("Pessoas estudante");
+            foreach(Student student in teacher.Students)
+            {
+                Console.WriteLine(student.Name);
+            }
+            Console.WriteLine("");
+        }
+    }
+
+    public static void InsertStudents( SchoolContext database)
+    {
+        Console.Clear();
+        Console.WriteLine("Digite o nome da pessoa estudante");
+        string name = Console.ReadLine()!;
+
+        Console.WriteLine("Digite o curso");
+        string course = Console.ReadLine()!;
+
+        Console.WriteLine("Digite o id da pessoa educadora");
+        int teacherId = int.Parse(Console.ReadLine());
+
+        Student newStudent = new Student
+        {
+            Name = name,
+            Course = course,
+            TeacherId = teacherId
+        };
+        database.Students.Add(newStudent);
+        database.SaveChanges();
+    }
+
+    public static void UpdateStudent(SchoolContext database)
+    {
+        Console.Clear();
+        Console.WriteLine("Informe o Id da Pessoa Estudante");
+        int id = int.Parse(Console.ReadLine());
+
+        Console.WriteLine("Digite o nome da pessoa estudante");
+        string name = Console.ReadLine()!;
+
+        Console.WriteLine("Digite o curso");
+        string course = Console.ReadLine()!;
+
+        Console.WriteLine("Digite o id da pessoa educadora");
+        int teacherId = int.Parse(Console.ReadLine());
+
+        Student existingStudent = database.Students.Find(id);
+        existingStudent.Name = name;
+        existingStudent.Course = course;
+        existingStudent.TeacherId = teacherId;
+        database.Students.Update(existingStudent);
+        database.SaveChanges();
+
+
+    }
+
+    public static void DeleteStudent( SchoolContext database)
+    {
+        Console.Clear();
+        Console.WriteLine("Informe o Id da Pessoa Estudante");
+        int id = int.Parse(Console.ReadLine());
+
+        Student existingStudent = database.Students.Find(id);
+        database.Students.Remove(existingStudent);
+        database.SaveChanges();
+    }
+
+}

School/School.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="7.0.4" />
+  </ItemGroup>
+
+</Project>

School/SchoolContext.cs

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+namespace School;
+using Microsoft.EntityFrameworkCore;
+
+public class SchoolContext : DbContext
+{
+    public SchoolContext(DbContextOptions options) : base(options) {}
+    public SchoolContext() {}
+
+    public DbSet<Student> Students{ get; set; } = null!;
+    public DbSet<Teacher> Teachers { get; set; } = null!;
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    {
+        if (!optionsBuilder.IsConfigured)
+        {
+            var connectionString = "Server=localhost;Database=School;User=SA;Password=SqlServer123!;TrustServerCertificate=True";
+            optionsBuilder.UseSqlServer(connectionString);
+        }
+    }
+
+}

School/Student.cs

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+namespace School;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+public class Student
+{
+    [Key]
+    public int Id { get; set;}
+    public string? Name { get; set; }
+    public string? Course { get; set;}
+    [ForeignKey("TeacherId")]
+    public int TeacherId { get; set; }
+    public Teacher? Teacher { get; set; }
+}

School/Teacher.cs

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+namespace School;
+using System.ComponentModel.DataAnnotations;
+
+public class Teacher
+{
+    [Key]
+    public int Id { get; set; }
+    public string? Name { get; set; }
+    public ICollection<Student>? Students { get; set; }
+}

docker-compose.yml

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+version: '3'
+services:
+  db:
+    image: mcr.microsoft.com/azure-sql-edge:latest
+    container_name: my_sql_server
+    ports:
+        - 1433:1433
+    environment:
+      - ACCEPT_EULA=Y
+      - MSSQL_SA_PASSWORD=SqlServer123!
+      - MSSQL_PID=Developer

sqlserver.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "School", "School\School.csproj", "{4B8AD814-8738-48B0-AECF-3701278325BD}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4B8AD814-8738-48B0-AECF-3701278325BD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4B8AD814-8738-48B0-AECF-3701278325BD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4B8AD814-8738-48B0-AECF-3701278325BD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4B8AD814-8738-48B0-AECF-3701278325BD}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A3FAFF39-CF24-4D86-9E01-106628DDC79F}
+	EndGlobalSection
+EndGlobal