namespace MinimalBlog.Domain.Model;

public class Author
{
    public int Id { get; set; }
    public string FirstName { get; set; } = default!;
    public string LastName { get; set; } = default!;

    public string FullName => FirstName + " " + LastName;
    public DateTime DateOfBirth { get; set; }
    public string? Bio { get; set; }
}

namespace MinimalBlog.Domain.Model;

public class Article
{
    public Article()
    {
        Categories = new List<Category>();
    }

    public int Id { get; set; }
    public string Title { get; set; } = default!;
    public string? Subtitle { get; set; }
    public string Body { get; set; } = default!;

    public int AuthorId { get; set; }
    public Author Author { get; set; } = default!;
    public DateTime DateCreated { get; set; }
    public DateTime LastUpdated { get; set; }
    public int NumberOfLikes { get; set; }
    public int NumberOfShares { get; set; }
    public ICollection<Category> Categories { get; set; }
}

namespace MinimalBlog.Domain.Model;

public class Blog
{
    public Blog()
    {
        Contributors = new List<Author>();
    }

    public int Id { get; set; }
    public string Name { get; set; } = default!;
    public string Description { get; set; } = default!;
    public DateTime CreatedDate { get; set; }

    public int AuthorId { get; set; }
    public Author Owner { get; set; } = default!;

    public ICollection<Author> Contributors { get; }
}

namespace MinimalBlog.Domain.Model;

public class Category
{
    public Category()
    {
        Articles = new List<Article>();
    }

    public int Id { get; set; }
    public string Name { get; set; } = default!;
    public string Description { get; set; } = default!;
    public ICollection<Article> Articles { get; set; }
}

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
  <ItemGroup>
    <ProjectReference Include="..\MinimalBlog.Domain\MinimalBlog.Domain.csproj" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.2">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
  </ItemGroup>
</Project>

using Microsoft.EntityFrameworkCore;
using MinimalBlog.Domain.Model;

namespace MinimalBlog.Dal;

public class MinimalBlogDbContext : DbContext
{
    public MinimalBlogDbContext(DbContextOptions options) : base(options)
    {
    }

    public DbSet<Article> Articles { get; set; } = default!;
    public DbSet<Category> Categories { get; set; } = default!;
    public DbSet<Author> Authors { get; set; } = default!;
    public DbSet<Blog> Blogs { get; set; } = default!;
}

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "AllowedHosts": "*",
  "ConnectionStrings": {
    "Default": "Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=MinimalBlog;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False"
  }
}

<Project Sdk="Microsoft.NET.Sdk.Web">
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.2.3" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.2" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.2">
      <PrivateAssets>all</PrivateAssets>
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
    </PackageReference>
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\MinimalBlog.Domain\MinimalBlog.Domain.csproj" />
    <ProjectReference Include="..\MinimalBlog.Dal\MinimalBlog.Dal.csproj" />
  </ItemGroup>
</Project>

using Microsoft.EntityFrameworkCore;
using MinimalBlog.Dal;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var connectionString = builder.Configuration.GetConnectionString("Default");
builder.Services.AddDbContext<MinimalBlogDbContext>(opt => opt.UseSqlServer(connectionString));

For /f "tokens=2-4 delims=/ " %%a in ('date /t') do (set mydate=%%c_%%a_%%b)
For /f "tokens=1-2 delims=/:" %%a in ("%TIME: =0%") do (set mytime=%%a%%b)
dotnet tool update --global dotnet-ef --version 6.0.2
dotnet build
dotnet ef migrations --startup-project ../MinimalBlog.Api/ add V%mydate%_%mytime% --context MinimalBlogDbContext
pause

[*.cs]
generated_code = true

dotnet tool update --global dotnet-ef --version 6.0.2
dotnet build
dotnet ef --startup-project ../MinimalBlog.Api/ database update --context MinimalBlogDbContext
pause

Features and performance

Sql server 2019 will help us by making data integration, Management and intelligence easier and more intuitive than ever earlier.

Major Key points

در مرحله‌ی بعد سه پکیج زیر را باید نصب کنیم :

- Microsoft.AspNet.Identity.EntityFramework

-   Microsoft.AspNet.Identity.OWIN

-  Microsoft.Owin.Host.SystemWeb

Write maintainable SQL scripts, Understand code better and Navigate faster with SqlSmash, a productivity plugin for SQL Server Management Studio. 

public class Comment
{
    public int Id { get; set; }
    public string CommentText { get; set; }
    public string User { get; set; }
    
    public virtual ICollection<ArticleComment> ArticleComments { get; set; }
    public virtual ICollection<VideoComment> VideoComments { get; set; }
    public virtual ICollection<EventComment> EventComments { get; set; }
}

public class Article
{
    public Article()
    {
        ArticleComments = new HashSet<ArticleComment>();
    }
    
    public int Id { get; set; }
    public string Title { get; set; }
    public string Slug { get; set; }
    public string Description { get; set; }
    
    public virtual ICollection<ArticleComment> ArticleComments { get; set; }

}

public class Video
{
    public Video()
    {
        VideoComments = new HashSet<VideoComment>();
    }
    
    public int Id { get; set; }
    public string Url { get; set; }
    public string Description { get; set; }
    
    public virtual ICollection<VideoComment> VideoComments { get; set; }
}

public class Event
{
    public Event()
    {
        EventComments = new HashSet<EventComment>();
    }
    
    public int Id { get; set; }
    public string Name { get; set; }
    public DateTimeOffset? Start { get; set; }
    public DateTimeOffset? End { get; set; }
    
    public virtual ICollection<EventComment> EventComments { get; set; }
}

public class MyDbContext : DbContext
{
    public DbSet<Article> Articles { get; set; }
    public DbSet<ArticleComment> ArticleComments { get; set; }
    public DbSet<Video> Videos { get; set; }
    public DbSet<VideoComment> VideoComments { get; set; }
    public DbSet<Event> Events { get; set; }
    public DbSet<EventComment> EventComments { get; set; }
    public DbSet<Comment> Comments { get; set; }

    protected override void OnConfiguring(DbContextOptionsBuilder options)
        => options.UseSqlite("Data Source=polymorphic.db");

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<ArticleComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.ArticleId })
                .HasName("PK_dbo.ArticleComments");

            entity.HasIndex(e => e.ArticleId)
                .HasName("IX_ArticleId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_ArticleCommentId");

            entity.HasOne(d => d.Article)
                .WithMany(p => p.ArticleComments)
                .HasForeignKey(d => d.ArticleId)
                .HasConstraintName("FK_dbo.ArticleComments_dbo.Articles_ArticleId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.ArticleComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.ArticleComments_dbo.Comments_CommentId");
        });
        
        modelBuilder.Entity<VideoComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.VideoId })
                .HasName("PK_dbo.VideoComments");

            entity.HasIndex(e => e.VideoId)
                .HasName("IX_VideoId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_VideoCommentId");

            entity.HasOne(d => d.Video)
                .WithMany(p => p.VideoComments)
                .HasForeignKey(d => d.VideoId)
                .HasConstraintName("FK_dbo.VideoComments_dbo.Videos_VideoId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.VideoComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.VideoComments_dbo.Comments_CommentId");
        });
        
        modelBuilder.Entity<EventComment>(entity =>
        {
            entity.HasKey(e => new { e.CommentId, e.EventId })
                .HasName("PK_dbo.EventComments");

            entity.HasIndex(e => e.EventId)
                .HasName("IX_EventId");

            entity.HasIndex(e => e.CommentId)
                .HasName("IX_EventCommentId");

            entity.HasOne(d => d.Event)
                .WithMany(p => p.EventComments)
                .HasForeignKey(d => d.EventId)
                .HasConstraintName("FK_dbo.EventComments_dbo.Events_EventId");

            entity.HasOne(d => d.Comment)
                .WithMany(p => p.EventComments)
                .HasForeignKey(d => d.CommentId)
                .HasConstraintName("FK_dbo.EventComments_dbo.Comments_CommentId");
        });
    }
}

var $table = $('#browsers-grid');
$table.dataTable({
      "bServerSide": true,
      "sAjaxSource": "/Home/GetBrowsers"
 });

^[1-5]$

/// <summary>
/// Class that encapsulates most common parameters sent by DataTables plugin
/// </summary>
public class jQueryDataTableParamModel
{
    /// <summary>
    /// Request sequence number sent by DataTable,
    /// same value must be returned in response
    /// </summary>
    public string sEcho { get; set; }
    /// <summary>
    /// Text used for filtering
    /// </summary>
    public string sSearch { get; set; }
    /// <summary>
    /// Number of records that should be shown in table
    /// </summary>
    public int iDisplayLength { get; set; }
    /// <summary>
    /// First record that should be shown(used for paging)
    /// </summary>
    public int iDisplayStart { get; set; }
    /// <summary>
    /// Number of columns in table
    /// </summary>
    public int iColumns { get; set; }
    /// <summary>
    /// Number of columns that are used in sorting
    /// /// </summary>
    public int iSortingCols { get; set; }
    /// <summary>
    /// Comma separated list of column names
    /// </summary>
    public string sColumns { get; set; }
}

public JsonResult GetBrowsers(jQueryDataTableParamModel param)
{
        IQueryable<Browser> allBrowsers = new Browsers().CreateInMemoryDataSource().AsQueryable();

        IEnumerable<Browser> filteredBrowsers;

        // Apply Filtering
        if (!string.IsNullOrEmpty(param.sSearch))
        {
                filteredBrowsers = new Browsers().CreateInMemoryDataSource()
                    .Where(x => x.Engine.Contains(param.sSearch)
                                       || x.Grade.Contains(param.sSearch)
                                       || x.Name.Contains(param.sSearch)
                                       || x.Platform.Contains(param.sSearch)
                    ).ToList();
                float f;
                if (float.TryParse(param.sSearch, out f))
                {
                    filteredBrowsers = filteredBrowsers.Where(x => x.Version.Equals(f));
                }
        }
        else
        {
                filteredBrowsers = allBrowsers;
        }

        // Apply Sorting
        var sortColumnIndex = Convert.ToInt32(Request["iSortCol_0"]);
        Func<Browser, string> orderingFunction = (x => sortColumnIndex == 0 ? x.Engine :
                                                            sortColumnIndex == 1 ? x.Name :
                                                            sortColumnIndex == 2 ? x.Platform :
                                                            sortColumnIndex == 3 ? x.Version.ToString() :
                                                            sortColumnIndex == 4 ? x.Grade :
                                                                x.Name);

        var sortDirection = Request["sSortDir_0"]; // asc or desc
        filteredBrowsers = sortDirection == "asc" ? filteredBrowsers.OrderBy(orderingFunction) : filteredBrowsers.OrderByDescending(orderingFunction);

        // Apply Paging
        var enumerable = filteredBrowsers.ToArray();
        IEnumerable<Browser> displayedBrowsers = enumerable.Skip(param.iDisplayStart).
                Take(param.iDisplayLength).ToList();

        return Json(new
        {
                sEcho = param.sEcho,
                iTotalRecords = allBrowsers.Count(),
                iTotalDisplayRecords = enumerable.Count(),
                aaData = displayedBrowsers
        }, JsonRequestBehavior.AllowGet);
}

$(function () {
        var $table = $('#browsers-grid');
        $table.dataTable({
                "bProcessing": true,
                "bStateSave": true,
                "bServerSide": true,
                "bFilter": true,
                "sDom": 'T<"clear">lftipr',
                "aLengthMenu": [[5, 10, 25, 50, -1], [5, 10, 25, 50, "All"]],
                "bAutoWidth": false,
                "sAjaxSource": "/Home/GetBrowsers",
                "fnServerData": function (sSource, aoData, fnCallback) {
                    $.ajax({
                        "dataType": 'json',
                        "type": "POST",
                        "url": sSource,
                        "data": aoData,
                        "success": fnCallback
                    });
                },
                "aoColumns": [
                    { "mDataProp": "Engine" },
                    { "mDataProp": "Name" },
                    { "mDataProp": "Platform" },
                    { "mDataProp": "Version" },
                    { "mDataProp": "Grade" }
                ],
                "oLanguage": {
                        "sUrl": "/Content/dataTables.persian.txt"
                }
        });
});