using System.Windows.Forms;

public static class GlobalData
{
    public static Form ScheduleForm { get; set; }
}

GlobalData.ScheduleForm = this;

namespace SchedulerDemo.Jobs
{
    using System.Linq;
    using System.Windows.Forms;
    using Quartz;

    public class HelloJob : IJob
    {
        private delegate void ButtonTextWriter(string buttonId, string text);
        
        MainForm form = GlobalData.ScheduleForm as MainForm;

        private void SetButtonText(string buttonId, string text)
        {
            (form.Controls.Find(buttonId, true).FirstOrDefault() as Button).Text = text;
        }

        public void Execute(IJobExecutionContext context)
        {
            form.BeginInvoke(new ButtonTextWriter(SetButtonText), new object[] { "myButton", "My Text" });
        }
    }
}

 Butter
Egg
Flour
Milk
Sugar

Flour 50
Egg 100
Milk 150
Butter 200
Sugar 500

var query = from i in ingredients
orderby i.Calories
select i;

Egg 100
Milk 100
Butter 200
Flour 500
Sugar 500

var query = from i in ingredients
orderby i.Calories, i.Name
select i;

Sugar 500
Flour 500
Butter 200
Milk 100
Egg 100

var query = from i in ingredients
orderby i.Calories descending
select i;

Milk 100
Egg 100
Butter 200
Sugar 500
Flour 500

var query = from i in ingredients
orderby i.Calories, i.Name descending
select i;

C
B
A

 Ingredients with 500 calories
 -Sugar
 -Lard
 -Butter
Ingredients with 100 calories
 -Egg
 -Milk
Ingredients with 50 calories
 -Flour
 -Oats

Apple
Sugar
Pastry
Cinnamon
Cherry
Sugar
Pastry
Kirsch

Apple
Sugar
Pastry
Cinnamon
Cherry
Kirsch

Apple
Sugar
Pastry
Cinnamon

Apple
Sugar
Pastry
Cinnamon
Cherry
Kirsch

Sugar
Pastry

Apple
Cinnamon

var facilities = context.Facilities.ToList();

var facilities = context.Facilities.Select(x =>
                    new
                    {
                        x.Name,
                        x.MemberCost
                    }).ToList();

var facilities = context.Facilities.Where(x => x.MemberCost > 0).ToList();

var facilities = context.Facilities.Where(x => x.MemberCost > 0
                                                            && x.MemberCost < (x.MonthlyMaintenance / 50))
                                                    .Select(x =>
                                                        new
                                                        {
                                                            x.FacId,
                                                            x.Name,
                                                            x.MemberCost,
                                                            x.MonthlyMaintenance
                                                        }).ToList();

var facilities = context.Facilities.Where(x => x.Name.Contains("Tennis")).ToList();

int[] ids = { 1, 5 };
var facilities = context.Facilities.Where(x => ids.Contains(x.FacId)).ToList();

var facilities = context.Facilities
                        .Select(x =>
                                    new
                                    {
                                        x.Name,
                                        Cost = x.MonthlyMaintenance > 100 ? "expensive" : "cheap"
                                    }).ToList();

var date = new DateTime(2012, 09, 01);
var members = context.Members.Where(x => x.JoinDate >= date)
                                            .Select(x =>
                                                        new
                                                        {
                                                            x.MemId,
                                                            x.Surname,
                                                            x.FirstName,
                                                            x.JoinDate
                                                        }).ToList();

var members = context.Members.OrderBy(x => x.Surname)
                                            .Select(x =>
                                                        new
                                                        {
                                                            x.Surname
                                                        })
                                            .Distinct()
                                            .Take(10)
                                            .ToList();

var names = context.Members.Select(m => m.Surname).ToList()
                            .Union(context.Facilities.Select(f => f.Name).ToList()) // For now we have to use `.ToList()` here
                            .ToList();

SELECT surname
FROM members
UNION
SELECT name
FROM facilities;

var latest = context.Members.Max(x => x.JoinDate);

var latest2 = context.Members.Select(m => m.JoinDate).DefaultIfEmpty().Max();

SELECT MAX([m].[JoinDate])
FROM   (SELECT NULL AS [empty]) AS [empty]
       LEFT OUTER JOIN
       [Members] AS [m]
       ON 1 = 1;

var latest3 = context.Members.Max(m => (DateTime?)m.JoinDate) ?? DateTime.Now;

var latest4 = context.Members.OrderByDescending(m => m.JoinDate).Select(m => m.JoinDate).FirstOrDefault();

var lastMember = context.Members.OrderByDescending(m => m.JoinDate)
                            .Select(x => new { x.FirstName, x.Surname, x.JoinDate })
                            .FirstOrDefault();

var members = context.Members.Select(x => new { x.FirstName, x.Surname, x.JoinDate })
                                    .Where(x => x.JoinDate == context.Members.Max(x => x.JoinDate))
                                    .ToList();

public override void OnAuthorization(AuthorizationContext filterContext)

filterContext.ActionDescriptor.ControllerDescriptor.ControllerName
filterContext.ActionDescriptor.ActionName

 filterContext.Result = new HttpStatusCodeResult(403);

public class CaptchaController : Controller
    {
        public ActionResult CaptchaImage(string prefix, bool noisy = true)
        {
            var rand = new Random((int)DateTime.Now.Ticks);
            //generate new question
            int a = rand.Next(10, 99);
            int b = rand.Next(0, 9);
            var captcha = string.Format("{0} + {1} = ?", a, b);

            //store answer
            Session["Captcha" + prefix] = a + b;

            //image stream
            FileContentResult img = null;

            using (var mem = new MemoryStream())
            using (var bmp = new Bitmap(130, 30))
            using (var gfx = Graphics.FromImage((Image)bmp))
            {
                gfx.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
                gfx.SmoothingMode = SmoothingMode.AntiAlias;
                gfx.FillRectangle(Brushes.White, new Rectangle(0, 0, bmp.Width, bmp.Height));

                //add noise
                if (noisy)
                {
                    int i, r, x, y;
                    var pen = new Pen(Color.Yellow);
                    for (i = 1; i < 10; i++)
                    {
                        pen.Color = Color.FromArgb(
                        (rand.Next(0, 255)),
                        (rand.Next(0, 255)),
                        (rand.Next(0, 255)));

                        r = rand.Next(0, (130 / 3));
                        x = rand.Next(0, 130);
                        y = rand.Next(0, 30);

                        gfx.DrawEllipse(pen, x - r, y - r, r, r);
                    }
                }

                //add question
                gfx.DrawString(captcha, new Font("Tahoma", 15), Brushes.Gray, 2, 3);

                //render as Jpeg
                bmp.Save(mem, System.Drawing.Imaging.ImageFormat.Jpeg);
                img = this.File(mem.GetBuffer(), "image/Jpeg");
            }

            return img;
        }

[Required(ErrorMessage = "لطفا {0} را وارد کنید")]
         [Display(Name = "حاصل جمع")]
         public string Captcha { get; set; }

<div class="form-group">
                        <input type="button" value="" id="refresh" />

                        @Html.LabelFor(model => model.Captcha)

                        <img alt="Captcha" id="imgcpatcha" src="@Url.Action("CaptchaImage","Captcha")" style="" />
                    </div>

<script type="text/javascript">
    $(function () {
        $('#refresh').click(function () {


            $.ajax({
                url: '@Url.Action("CaptchaImage","Captcha")',
                type: "GET",
                data: null
            })
            .done(function (functionResult) {
                $("#imgcpatcha").attr("src", "/Captcha/CaptchaImage?" + functionResult);
            });

        });
    });
</script>

if (Session["Captcha"] == null || Session["Captcha"].ToString() != model.Captcha)
            {
                ModelState.AddModelError("Captcha", "مجموع اشتباه است");
            }

  $('#refresh').click(function () {
         
            var d = new Date();
            $("#imgcpatcha").attr("src", "Captcha/CaptchaImage?" + d.getTime());

        });

var options = app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();
LocalizationPipeline.ConfigureOptions(options.Value);
app.UseRequestLocalization(options.Value);

• AppFabric Caching Services : بر اساس Microsoft's AppFabric Caching Services که یک پلتفرم caching محسوب می‌شود (+). (این پروژه پیشتر به نام Velocity معروف شده بود و قرار بود تنها برای ASP.NET ارائه شود که سیاست آن به گونه‌ای جامع‌تر تغییر کرده است)

• MemCache : بر اساس سیستم معروف MemCached تهیه شده است (+).

• NCache : (+)

• ScaleOut : (+)

• Prevalence : (+)

• SysCache : بر اساس همان روش آشنای متداول در برنامه‌های ASP.NET به کمک System.Web.Caching.Cache کار می‌کند؛ یا به قولی همان IIS caching

• SysCache2 : همانند SysCache است با این تفاوت که SQL dependencies ویژه SQL Server را نیز پشتیبانی می‌کند.
  

• SharedCache : یک سیستم distributed caching نوشته شده برای دات نت است (+).

• مستندات NHibernate

• توضیحات مفصلی در مورد سطح اول و دوم caching در NHibernate

• مقایسه‌ای در مورد مبحث caching در EF و NHibernate

• چگونه fluent NHibernate را جهت استفاده از سطح دوم caching تنظیم کنیم؟

• توضیحات جامعی در مورد استفاده از SysCache

var fileInfo = new FileInfo(outputFilePath);
long resumeOffset = 0;
if (fileInfo.Exists)
{
    resumeOffset = fileInfo.Length;
}
if (resumeOffset > 0)
{
    _client.DefaultRequestHeaders.Range = new RangeHeaderValue(resumeOffset, null);
}

var response = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead);
if (response.Headers.AcceptRanges == null && resumeOffset > 0)
{
    // resume not supported, starting over
}

private readonly CancellationTokenSource _cts = new CancellationTokenSource();

var result = await client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead, _cts.Token);
using(var stream = await result.Content.ReadAsStreamAsync())
{
   byte[] buffer = new byte[80000];
   int bytesRead;
   while((bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length)) > 0 &&
         !_cts.IsCancellationRequested)
   {
      outputStream.Write(buffer, 0, bytesRead);
   }
}

public async Task DownloadFileAsync(string url, string outputFilePath, int maxRequestAutoRetries)
{
            var exceptions = new List<Exception>();

            do
            {
                --maxRequestAutoRetries;
                try
                {
                    await doDownloadFileAsync(url, outputFilePath);
                }
                catch (TaskCanceledException ex)
                {
                    exceptions.Add(ex);
                }
                catch (HttpRequestException ex)
                {
                    exceptions.Add(ex);
                }
                catch (Exception ex) when (isNetworkError(ex))
                {
                    exceptions.Add(ex);
                }

                // Wait a bit and try again later
               if (exceptions.Any())  await Task.Delay(2000, _cts.Token);
            } while (maxRequestAutoRetries > 0 &&
                     !_cts.IsCancellationRequested);

            var uniqueExceptions = exceptions.Distinct().ToList();
            if (uniqueExceptions.Any())
            {
                if (uniqueExceptions.Count() == 1)
                    throw uniqueExceptions.First();
                throw new AggregateException("Could not process the request.", uniqueExceptions);
            }
}

private static bool isNetworkError(Exception ex)
{
    if (ex is SocketException || ex is WebException)
        return true;
    if (ex.InnerException != null)
        return isNetworkError(ex.InnerException);
    return false;
}