using (var context = new TestDbContext())
    {
        Mapper.CreateMap<SourceClass, DestinationClass>()
            .AfterMap((src, dest) =>
            {
                  //using context
            });

         var dest = Mapper.Map<DestinationClass>(source);
    }

//ایجاد بانک اطلاعاتی خالی
var dir = @"D:\Prog\"; // این مسیر پوشه است و نه مسیر فایل
using (OleDbConnection connection = new OleDbConnection(@"Provider=VFPOLEDB.1;Data Source=" + dir))
{
    using (var command = new OleDbCommand())
    {
        command.Connection = connection;
        command.Connection.Open();
        command.CommandText = "Create Table myDBF (dsw_id1 int, dsw_fname v(250), dsw_lname v(250) )";
        command.CommandType = CommandType.Text;
        command.ExecuteNonQuery();
    }
}

//ثبت اطلاعات در بانک ایجاد شده
var dbPath = Path.Combine(dir, "myDBF.dbf");
using (OleDbConnection connection = new OleDbConnection(@"Provider=VFPOLEDB.1;Data Source=" + dbPath))
{
    using (var command = new OleDbCommand())
    {
        command.Connection = connection;
        command.Connection.Open();
        command.CommandText = "Insert Into myDBF Values (1, ?, ?)";
        command.Parameters.AddWithValue("?", "B"); // فقط علامت سؤال در اینجا کار می‌کند و نه هیچ چیز دیگری
        command.Parameters.AddWithValue("?", "A");
        command.CommandType = CommandType.Text;
        command.ExecuteNonQuery();
    }
}

public class ETagAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        filterContext.HttpContext.Response.Filter = new ETagFilter(filterContext.HttpContext.Response, filterContext.RequestContext.HttpContext.Request);
    }
}

public class ETagFilter : MemoryStream
{
    private HttpResponseBase _response = null;
    private HttpRequestBase _request;
    private Stream _filter = null;

    public ETagFilter(HttpResponseBase response, HttpRequestBase request)
    {
        _response = response;
        _request = request;
        _filter = response.Filter;
    }

    private string GetToken(Stream stream)
    {
        var checksum = new byte[0];
        checksum = MD5.Create().ComputeHash(stream);
        return Convert.ToBase64String(checksum, 0, checksum.Length);
    }

    public override void Write(byte[] buffer, int offset, int count)
    {
        var data = new byte[count];

        Buffer.BlockCopy(buffer, offset, data, 0, count);

        var token = GetToken(new MemoryStream(data));
        var clientToken = _request.Headers["If-None-Match"];

        if (token != clientToken)
        {
            _response.AddHeader("ETag", token);
            _filter.Write(data, 0, count);
        }
        else
        {
            _response.SuppressContent = true;
            _response.StatusCode = 304;
            _response.StatusDescription = "Not Modified";
            _response.AddHeader("Content-Length", "0");
        }
    }
}

var cultureInfo = new CultureInfo("fa-IR");
CultureInfo.DefaultThreadCurrentCulture = cultureInfo;
CultureInfo.DefaultThreadCurrentUICulture = cultureInfo;

@page "/counter"  


@{
       Debug.WriteLine("Code");
}
@code {
    protected override async Task OnInitializedAsync()
    { 
         var _dbContext = new ApplicationDbContext();
        await _dbContext.Question.ToListAsync();
    }
}

            var settings = new FriendlyUrlSettings();
            settings.AutoRedirectMode = RedirectMode.Permanent;
            routes.EnableFriendlyUrls(settings);

            routes.MapPageRoute("aboutus", "درباره-ما", "~/aboutus.aspx");

public Task<HttpResponseMessage> SendAsync(HttpRequestMessage request)

 var httpRequestMessage = new HttpRequestMessage(HttpMethod.Get, uri);
 httpRequestMessage.Headers.Authorization = ...
 httpClient.SendAsync(httpRequestMessage);

        public void UpdateSettings(SiteSettings siteSettings)
        {
            var path = System.IO.Path.Combine(_hostingEnvironment.WebRootPath, "appsettings.json");
            System.IO.StreamWriter streamWriter = new System.IO.StreamWriter(path, false);
            streamWriter.Write(Newtonsoft.Json.JsonConvert.SerializeObject(siteSettings));
            streamWriter.Close();
        }

        private readonly IOptionsSnapshot<SiteSettings> _siteOptions;

@using (Ajax.BeginForm("Upload", "Attachment", FormMethod.Post, 
new AjaxOptions
                            {
                                HttpMethod = "POST",
                            },
                            new
                            {
                                encType = "multipart/form-data",
                                id = "attach-form"
                            }))
{
    @Html.AntiForgeryToken()

    @Html.TextBoxFor(m => m.FirstName })
    
    <input type="file" name="Files" data-buttonText="انتخاب تصویر">
   
    <button type="submit">ارسال</button>
}

        var formData = new FormData();

        $('form').submit(function() {
            
            var action = $(this).attr('action');
            var formData = new FormData($(this).get(0));

            $.ajax({
                type: "POST",
                dataType: "json",
                url: action,
                data: formData,
                processData: false,
                contentType: false,
                success: function(data) {
                    //...
                }
                success: function(data) {
                     //...
                }
            });

            return false;
        });

public class MyModel
    {
        public string FirstName{ get; set; }

        public IEnumerable<HttpPostedFileBase> Files { get; set; }
    }  

[AjaxOnly]
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Upload(MyModel model)
{
     if (!ModelState.IsValid)
         return //....

     if(model.Files != null)
         foreach (var file in model.Files)
             if (file  != null && file.ContentLength > 0)
             {
                 // ....
             }
}