db first modeling

HelloBlazorServer/HelloBlazorServer/HelloBlazorServer.csproj

@@ -10,8 +10,15 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="8.0.5" />
     <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="8.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.6" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.6">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.5" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.5" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.4" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0" />
   </ItemGroup>
 
 </Project>

HelloBlazorServer/HelloBlazorServer/Models/BlazorServerDbContext.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore;
+
+namespace HelloBlazorServer.Models;
+
+public partial class BlazorServerDbContext : DbContext
+{
+    public BlazorServerDbContext()
+    {
+    }
+
+    public BlazorServerDbContext(DbContextOptions<BlazorServerDbContext> options)
+        : base(options)
+    {
+    }
+
+    public virtual DbSet<GangnamguPopulation> GangnamguPopulations { get; set; }
+
+    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+#warning To protect potentially sensitive information in your connection string, you should move it out of source code. You can avoid scaffolding the connection string by using the Name= syntax to read it from configuration - see https://go.microsoft.com/fwlink/?linkid=2131148. For more guidance on storing connection strings, see https://go.microsoft.com/fwlink/?LinkId=723263.
+        => optionsBuilder.UseNpgsql("Host=peacecloud.synology.me:25432;Database=blazor_server_db;Username=study;Password=Study1234!");
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.HasPostgresExtension("pg_catalog", "adminpack");
+
+        modelBuilder.Entity<GangnamguPopulation>(entity =>
+        {
+            entity.HasKey(e => e.Id).HasName("gangnamgu_population_pkey");
+
+            entity.ToTable("gangnamgu_population");
+
+            entity.Property(e => e.Id).HasColumnName("id");
+            entity.Property(e => e.AdministrativeAgency)
+                .HasColumnType("character varying")
+                .HasColumnName("administrative_agency");
+            entity.Property(e => e.FemalePopulation).HasColumnName("female_population");
+            entity.Property(e => e.MalePopulation).HasColumnName("male_population");
+            entity.Property(e => e.NumberOfHouseholds).HasColumnName("number_of_households");
+            entity.Property(e => e.NumberOfPeoplePerHousehold).HasColumnName("number_of_people_per_household");
+            entity.Property(e => e.SexRatio).HasColumnName("sex_ratio");
+            entity.Property(e => e.TotalPopulation).HasColumnName("total_population");
+        });
+
+        OnModelCreatingPartial(modelBuilder);
+    }
+
+    partial void OnModelCreatingPartial(ModelBuilder modelBuilder);
+}

HelloBlazorServer/HelloBlazorServer/Models/GangnamguPopulation.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+
+namespace HelloBlazorServer.Models;
+
+public partial class GangnamguPopulation
+{
+    public string? AdministrativeAgency { get; set; }
+
+    public int? TotalPopulation { get; set; }
+
+    public int? MalePopulation { get; set; }
+
+    public int? FemalePopulation { get; set; }
+
+    public double? SexRatio { get; set; }
+
+    public int? NumberOfHouseholds { get; set; }
+
+    public double? NumberOfPeoplePerHousehold { get; set; }
+
+    public int Id { get; set; }
+}