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}");
}

Microsoft.Jet.OLEDB.4.0 provider --> Excel 97-2003 format (.xls)
Microsoft.ACE.OLEDB.12.0 provider --> Excel 2007+ format (.xlsx)

PM> Install-Package ExcelDataReader
PM> Install-Package ExcelDataReader.DataSet

public ActionResult Upload()
{
      return View();
}

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Upload(HttpPostedFileBase upload)
{  
           // اعتبار سنجی فایل آپلود شده
            if (upload != null && upload.ContentLength > 0 && (upload.FileName.EndsWith(".xls") || upload.FileName.EndsWith(".xlsx")))
            {
                // با خواندن فایل به صورت باینری، این کتابخانه نیازی به نصب پیش نیازهای آفیس ندارد
                Stream stream = upload.InputStream;

                //  نیازی به نگرانی در مورد پسوند فایل نیست
                // کتابخانه به صورت خودکار کلاس مورد نظر برای پسوند مربوطه را استفاده می‌کند
                // ExcelDataReader.ExcelBinaryReader یا ExcelDataReader.ExcelOpenXmlReader
                IExcelDataReader reader = ExcelReaderFactory.CreateReader(stream);

                // روش ذکر شده در قسمت دوم برای خواندن کل اطلاعات بصورت یکجا
                DataSet result = reader.AsDataSet(new ExcelDataSetConfiguration()
               {
                    ConfigureDataTable = (tableReader) => new ExcelDataTableConfiguration()
                    {
                        // true: ردیف اول از فایل را به عنوان هدر در نظر می‌گیرد
                        // مقدار پیش فرض: false
                        UseHeaderRow = true
                    }
                });

                reader.Close();
                return View(result.Tables[0]);
            }
      ModelState.AddModelError("File", "Please upload Excel file ...");
      return View();
 }  

do {
        while (reader.Read()) {
       // reader.GetDouble(0);
        }
    } while (reader.NextResult());

@model System.Data.DataTable
@using System.Data;

<h2>Upload File</h2>

@using (Html.BeginForm("Upload", "Home", null, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    @Html.AntiForgeryToken()
    @Html.ValidationSummary()

    <div>
        <input type="file" id="dataFile" name="upload" />
    </div>

    <div>
        <input type="submit" value="Upload" />
    </div>

    if (Model != null)
    {
        <table>
            <thead>
                <tr>
                    @foreach (DataColumn col in Model.Columns)
                    {
                        <th>@col.ColumnName</th>
                    }
                </tr>
            </thead>
            <tbody>
                @foreach (DataRow row in Model.Rows)
                {
                    <tr>
                        @foreach (DataColumn col in Model.Columns)
                        {
                            <td>@row[col.ColumnName]</td>
                        }
                    </tr>
                }
            </tbody>
        </table>
    }
}

int[] arr1 = { 1, 2, 10 };
int[] arr2 = { 1, 2, 5, 10 };
int[] arr3 = { 1, 2, 5, 6, 7, 8, 9, 10 };

int[] collection = { 1, 2, 3, 4 };

Console.WriteLine(collection is [1, 2, 3, 4]); // True
Console.WriteLine(collection is [1, 2, 4]); // False

Console.WriteLine(collection is [_, 2, _, 4]); // True
Console.WriteLine(collection is [.., 3, _]); // True

if (new[] { 6, 7, 8 } is [_, _, ..])
{
   Console.WriteLine($"collection with at least two items");
}

if (new[] { 0, 42, 42, 0 } is [0, .., 0])
{
   Console.WriteLine($"collection with first and last element equal to 0");
}

Console.WriteLine(collection is [_, >= 2, _, _]); // True

if (new[] { 9, -1, -2 } is [> 0, ..])
{
   Console.WriteLine($"collection with positive first element");
}

if (new[] { 1, 42, 0 } is [_, 42 or -42, ..])
{
   Console.WriteLine($"collection with second element equal to 42 or -42");
}

namespace CS11Tests;

public static class ListPatternsMatching
{
    public static void Test()
    {
        Console.WriteLine(CheckSwitch(new[] { 1, 2, 10 }));          // prints 1
        Console.WriteLine(CheckSwitch(new[] { 1, 2, 7, 3, 3, 10 })); // prints 1
        Console.WriteLine(CheckSwitch(new[] { 1, 2 }));              // prints 2
        Console.WriteLine(CheckSwitch(new[] { 1, 3 }));              // prints 3
        Console.WriteLine(CheckSwitch(new[] { 1, 3, 5 }));           // prints 4
        Console.WriteLine(CheckSwitch(new[] { 2, 5, 6, 7 }));        // prints 50
    }

    public static int CheckSwitch(int[] values)
        => values switch
        {
            [1, 2, .., 10] => 1,
            [1, 2] => 2,
            [1, _] => 3,
            [1, ..] => 4,
            [..] => 50
        };
}

if (new[] { 1, 2, 3 } is [var first, _, _])
{
   Console.WriteLine($"three item collection with first item {first}");
}

if (new[] { 4, 5, 6 } is [_, var second, _])
{
   Console.WriteLine($"three item collection with second item {second}");
}

var uri = new Uri("http://www.mysite.com/categories/category-a/sub-categories/sub-category-a.html");
var result = uri.Segments switch
{
    ["/"] => "Root",
    [_, var single] => single,
    [_, .. string[] entries, _] => string.Join(" > ", entries)
};

 D:\vs-code-examples\sample01>code .

• امکان ایجاد progress bar و همچنین قابلیت لغو آپلود.
• Drag & Drop
• امکان paste کردن از Clipboard و قابلیت drag & drop از browser
• امکان resize کردن تصویر قبل از آپلود شدن
• امکان تغییر دادن orientation تصویر پیش از ارسال
• قابلیت resume و pause/play در آپلود
• امکان فیلتر کردن type، size و طول و عرض تصاویر
• قابلیت تبدیل به Flash shim در صورت عدم پشتیبانی html5 توسط مرورگر

نصب و پیاده سازی

bower install ng-file-upload-shim --save
bower install ng-file-upload --save