context.Chapters.Add(new Chapter
{
    Title = "آزمایش متن فارسی",
    Text = "برای نمونه تهیه شده‌است",
    User = user1.Entity
});

 "C:\Program Files (x86)\CodeBlocks\MinGW\bin\gcc.exe" -g -shared -fPIC -Wall D:\path\to\sqlite-amalgamation-3310100\spellfix.c -o spellfix1.dll

using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.InteropServices;

namespace EFCoreSQLiteFTS.DataLayer
{
    public static class LoadSqliteExtensions
    {
        public static void AddToSystemPath(string extensionsDirectory)
        {
            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
            {
                throw new NotSupportedException("Modifying the path at runtime only works on Windows. On Linux and Mac, set LD_LIBRARY_PATH or DYLD_LIBRARY_PATH before running the app.");
            }

            var path = new HashSet<string>(Environment.GetEnvironmentVariable("PATH").Split(Path.PathSeparator));
            if (path.Add(extensionsDirectory))
            {
                Environment.SetEnvironmentVariable("PATH", string.Join(Path.PathSeparator, path));
            }
        }
    }
}

LoadSqliteExtensions.AddToSystemPath("path to .dll file");
services.AddDbContext<ApplicationDbContext>((serviceProvider, optionsBuilder) =>
    {
        var connection = new SqliteConnection(connectionString);
        connection.Open();

        connection.LoadExtension("spellfix1");
        // Passing in an already open connection will keep the connection open between requests.
        optionsBuilder.UseSqlite(connection);
    });

        private static void createFtsTables(ApplicationDbContext context)
        {
            // For SQLite FTS
            // Note: This can be added to the `protected override void Up(MigrationBuilder migrationBuilder)` method too.
            context.Database.ExecuteSqlRaw(@"CREATE VIRTUAL TABLE IF NOT EXISTS ""Chapters_FTS""
                                    USING fts5(""Text"", ""Title"", content=""Chapters"", content_rowid=""Id"");");

            // 'SQLite Error 1: 'no such module: spellfix1'.' --> must be loaded ...
            // EditCost for unicode support
            context.Database.ExecuteSqlRaw("CREATE VIRTUAL TABLE IF NOT EXISTS Chapters_FTS_Vocab USING fts5vocab('Chapters_FTS', 'row');");
            context.Database.ExecuteSqlRaw("CREATE TABLE IF NOT EXISTS Chapters_FTS_SpellFix_EditCost(iLang INT, cFrom TEXT, cTo TEXT, iCost INT);");
            context.Database.ExecuteSqlRaw("CREATE VIRTUAL TABLE IF NOT EXISTS Chapters_FTS_SpellFix USING spellfix1(edit_cost_table=Chapters_FTS_SpellFix_EditCost);");
        }

database.ExecuteSqlRaw(@"INSERT INTO Chapters_FTS_SpellFix(word, rank)
    SELECT term, cnt FROM Chapters_FTS_Vocab
    WHERE term not in (SELECT word from Chapters_FTS_SpellFix_vocab)");

database.ExecuteSqlRaw("INSERT INTO Chapters_FTS_SpellFix(command) VALUES(\"reset\");");

namespace EFCoreSQLiteFTS.Entities
{
    public class SpellCheck
    {
        public string Word { get; set; }
        public decimal Rank { get; set; }
        public decimal Distance { get; set; }
        public decimal Score { get; set; }
        public decimal Matchlen { get; set; }
    }
}

namespace EFCoreSQLiteFTS.DataLayer
{
    public class ApplicationDbContext : DbContext
    {
        //...

        protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);

            builder.Entity<SpellCheck>().HasNoKey().ToView(null);
        }

        //...
    }
}

foreach (var item in context.Set<SpellCheck>().FromSqlRaw(
          @"SELECT word, rank, distance, score, matchlen FROM Chapters_FTS_SpellFix
            WHERE word MATCH {0} and top=6", "فارشی"))
{
    Console.WriteLine($"Word: {item.Word}");
    Console.WriteLine($"Distance: {item.Distance}");
}

How to Install pgAdmin4 on Ubuntu 20.04/18.04/16.04?. This post has been written primarily to guide new users on installing pgAdmin 4 on Ubuntu 20.04/18.04/16.04. pgAdmin is a feature-rich and open source PostgreSQL administration and development platform that runs on Linux, Unix, Mac OS X, and Windows.

With pgAdmin you can manage PostgreSQL database servers, from version 9.2 using an intuitive and powerful web interface. We have guides on installing pgAdmin 4 on other platforms. 

in everyday tasks, such as boot time now nearly 30% faster than Windows 7 on the same device. 

1. Packages and Assert
2. Reading and Writing to Files
3. Polymorphism
4. Anonymous Classes
5. Multithreading
6. Introduction to GUI Programming
7. GUI Windows Builder
8. 2-D Game Programming 

Modern is a header-only library designed to provide Standard C++ developers with first-class access to the modern Windows API. 

Bringing WebAssembly to the .NET Mainstream - Steve Sanderson, Microsoft

Many developers still consider WebAssembly to be a leading-edge, niche technology tied to low-level systems programming languages. However, C# and .NET (open-source, cross-platform technologies used by nearly one-third of all professional developers [1]) have run on WebAssembly since 2017. Blazor WebAssembly brought .NET into the browser on open standards, and is now one of the fastest-growing parts of .NET across enterprises, startups, and hobbyists. Next, with WASI we could let you run .NET in even more places, introducing cloud-native tools and techniques to a wider segment of the global developer community. This is a technical talk showing how we bring .NET to WebAssembly. Steve will demonstrate how it runs both interpreted and AOT-compiled, how an IDE debugger can attach, performance tradeoffs, and how a move from Emscripten to WASI SDK lets it run in Wasmtime/Wasmer or higher-level runtimes like wasmCloud. Secondly, you'll hear lessons learned from Blazor as an open-source project - challenges and misconceptions faced bringing WebAssembly beyond early adopters. [1] StackOverflow survey 2021