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}");
}

1.  Get/GetAsync(with data retriever)
2.  Get/GetAsync(without data retriever)
3.  Set/SetAsync
4.  Remove/RemoveAsync
5.  ~~Refresh/RefreshAsync (was removed)~~
6.  RemoveByPrefix/RemoveByPrefixAsync
7.  SetAll/SetAllAsync
8.  GetAll/GetAllAsync
9.  GetByPrefix/GetByPrefixAsync
10.  RemoveAll/RemoveAllAsync
11.  GetCount
12.  Flush/FlushAsync
13.  TrySet/TrySetAsync
14.  GetExpiration/GetExpirationAsync

1. In-Memory
2. Memcached
3. Redis(Based on StackExchange.Redis)
4. Redis(Based on csredis)
5. SQLite
6. Hybrid
7. Disk
8. LiteDb

1. BinaryFormatter
2. MessagePack
3. Newtonsoft.Json
4. Protobuf
5. System.Text.Json

• MessagePack
• Newtonsoft.Json
• Protobuf
• System.Text.Json

<ItemGroup>
   <PackageReference Include="System.Data.OleDb" Version="7.0.0"/>
</ItemGroup>

The 'VFPOLEDB' provider is not registered on the local machine.

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
   <PlatformTarget>x86</PlatformTarget>
</PropertyGroup>

var oleDbEnumerator = new OleDbEnumerator();
using var elements = oleDbEnumerator.GetElements();
foreach (DataRow row in elements.Rows)
{
    Console.WriteLine($"{row["SOURCES_DESCRIPTION"]}: {row["SOURCES_NAME"]}");
}

Microsoft OLE DB Provider for SQL Server: SQLOLEDB
MSDataShape: MSDataShape
SQL Server Native Client 11.0: SQLNCLI11
Microsoft OLE DB Provider for Visual FoxPro: VFPOLEDB
OLE DB Provider for Microsoft Directory Services: ADsDSOObject
Microsoft OLE DB Driver for SQL Server: MSOLEDBSQL
Microsoft OLE DB Driver for SQL Server Enumerator: MSOLEDBSQL Enumerator
SQL Server Native Client 11.0 Enumerator: SQLNCLI11 Enumerator
Microsoft OLE DB Provider for Search: Windows Search Data Source
Microsoft OLE DB Provider for ODBC Drivers: MSDASQL
Microsoft OLE DB Enumerator for ODBC Drivers: MSDASQL Enumerator
Microsoft OLE DB Provider for Analysis Services 14.0: MSOLAP
Microsoft OLE DB Provider for Analysis Services 14.0: MSOLAP
Microsoft Jet 4.0 OLE DB Provider: Microsoft.Jet.OLEDB.4.0
Microsoft OLE DB Enumerator for SQL Server: SQLOLEDB Enumerator
Microsoft OLE DB Simple Provider: MSDAOSP
Microsoft OLE DB Provider for Oracle: MSDAORA

Microsoft OLE DB Provider for Visual FoxPro: VFPOLEDB

var connectionString = "Provider=VFPOLEDB;Data Source=" +
       @"C:\path\Db.DBF;Password=;Collating Sequence=MACHINE";
using var dbConnection = new OleDbConnection(connectionString);
using var dataAdapter = new OleDbDataAdapter("select family from Db.DBF", dbConnection);
using var dataset = new DataSet();
dataAdapter.Fill(dataset, "table1");

var sb = new StringBuilder();
foreach (DataRow dataRow in dataset.Tables[0].Rows)
{
    var iranSystem = dataRow[0] as string;
    var unicode = iranSystem.FromIranSystemToUnicode();
    if (!string.IsNullOrWhiteSpace(unicode))
    {
       sb.AppendLine($"[DataRow(\"{iranSystem}\", \"{unicode}\")]");
    }
}

Encoding.RegisterProvider(CodePagesEncodingProvider.Instance)