function deleteFile(location, filename)//حذف فیزیکی و منطقی فایل
{
    $.prompt("آیا برای حذف فایل موجود اطمینان دارید ؟", {
        title: '<img src="Images/warning.png" />',
        buttons: { "بله": true, "خیر": false },
        focus: 2,
        submit: function (e, v, m, f) {
            if (v == true) {
                var getdate = new Date();  //Used to prevent caching during ajax call
                if (xmlhttp) {
                    $("p#vtip").fadeOut("slow").remove(); //محو شدن tooltip
                    var id = document.getElementById("id").value;
                    var i = '3';
                    params = "id=" + id + "&i=" + i + "&filename=" + filename + "&location=" + location;
                    xmlhttp.open("POST", "FetchData/dbSearchDocument1.php", true);
                    xmlhttp.onreadystatechange = handleServerResponse4;
                    xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
                    xmlhttp.send(params);
                }
            }
            else {
            }
        }
    });
}
//-----------------------------------------------------------------------
function handleServerResponse4() {
    if ((xmlhttp.readyState == 1) || (xmlhttp.readyState == 2) || (xmlhttp.readyState == 3))//loading
    {
        document.getElementById("content").innerHTML = "<img src='Images/bigloading.gif'/>";
    }
    else if (xmlhttp.readyState == 4) //ready
    {
        if (xmlhttp.status == 200) {
            if (xmlhttp.responseText == 1) {
                $.prompt(". حذف فایل با موفقیت انجام شد ", {
                    title: '<img src="Images/warning3.png" />',
                    buttons: { "بستن": true }
                });
            }
            else {
                $.prompt("! حذف فایل با خطا مواجه شده است", {
                    title: '<img src="Images/warning2.png" />',
                    buttons: { "بستن": true }
                });
            }
        }
        else {
            alert("Error during AJAX call. Please try again");
        }
    }
}
//-----------------------------------------------------------------------

<?xml version="1.0" encoding="UTF-8"?>
<transcript>
<text start="23.49" dur="5.97">
  &amp;gt;&amp;gt;Commentator: We have here today, Steve with
  us whom I met not too long ago at something
</text>
...
</transcript>

using System;
using System.Linq;
using System.Text;
using System.Web;
using System.Xml.Linq;

namespace YtSubs
{
  public class GoogleXmlToSrt
  {
      public string ConvertXmlToSrt(string url)
      {
          var transcript = loadTranscript(url);

          var srtBuf = new StringBuilder();
          var lineNumber = 0;

          foreach (var item in transcript.Root.Elements("text"))
          {
              lineNumber++;
              srtBuf.Append(lineNumber.ToString());

              var timeLine = getTimeLine(item);
              srtBuf.AppendFormat("{0}{1} --> {2}{3}", Environment.NewLine, timeLine.Item1, timeLine.Item2, Environment.NewLine);

              var msg = decodeText(item);
              srtBuf.AppendLine(msg + Environment.NewLine);
          }
          return srtBuf.ToString();
      }

      private static XDocument loadTranscript(string url)
      {
          var transcript = XDocument.Load(url);

          if (transcript.Root == null)
              throw new InvalidOperationException("couldn't load received data.");
          return transcript;
      }

      private static string decodeText(XElement text)
      {
          var textValue = text.Value.Split('\n');
          var msg = textValue.Aggregate(
                  string.Empty, (current, line) =>
                  current + (HttpUtility.HtmlDecode(line.Trim()) + Environment.NewLine)
                  );
          return msg.Trim();
      }

      private static int fractionalPart(string data)
      {
          var idx = data.IndexOf(".");
          if (idx == -1) return 0;
          var fractionalPart = data.Substring(idx + 1);
          if (fractionalPart.Length == 1) //3.4 --> 3.400
              return int.Parse(fractionalPart + "00");

          if (fractionalPart.Length == 2) //3.04 --> 3.040
              return int.Parse(fractionalPart + "0");

          return int.Parse(fractionalPart.Substring(0, 3));
      }

      private Tuple<string, string> getTimeLine(XElement text)
      {
          var startTs = getStartTs(text);
          TimeSpan endTs = getEndTs(text, startTs);
          return new Tuple<string, string>(timeSpanToString(startTs), timeSpanToString(endTs));
      }

      private static TimeSpan getStartTs(XElement text)
      {
          var startData = text.Attribute("start");
          if (startData == null)
              throw new InvalidOperationException("This is not a valid subtitle file.");

          var start = startData.Value;
          var startTs = new TimeSpan(0, 0, 0, (int)Math.Truncate(double.Parse(start)), fractionalPart(start));
          return startTs;
      }

      private static TimeSpan getEndTs(XElement text, TimeSpan startTs)
      {
          TimeSpan endTs;
          var durData = text.Attribute("dur");
          if (durData == null)
          {
              endTs = startTs + new TimeSpan(0, 0, 0, 3, 0);
          }
          else
          {
              var dur = durData.Value;
              var durTs = new TimeSpan(0, 0, 0, (int)Math.Truncate(double.Parse(dur)), fractionalPart(dur));
              endTs = startTs + durTs;
          }
          return endTs;
      }

      private static string timeSpanToString(TimeSpan lineTs)
      {
          return string.Format("{0}:{1}:{2},{3}",
                      lineTs.Hours.ToString("D2"),
                      lineTs.Minutes.ToString("D2"),
                      lineTs.Seconds.ToString("D2"),
                      lineTs.Milliseconds.ToString("D3"));
      }
  }
}

using System.IO;

namespace YtSubs
{
  class Program
  {
      static void Main(string[] args)
      {
          var url = "http://video.google.com/timedtext?hl=en&v=-PA-buwI3q4&lang=en";
          //var url = "subtitle.xml";
          var srtBuf = new GoogleXmlToSrt().ConvertXmlToSrt(url);
          File.WriteAllText("-PA-buwI3q4.srt", srtBuf);
      }
  }
}

//قرار دهید containerBuilder.RegisterRequiredServices(); این دو را بعد از
containerBuilder.RegisterHttpClient();
containerBuilder.RegisterIdentityClient();

public virtual HttpClient HttpClient { get; set; } 

async Task CallUsersListApiUsingHttpClient()
{
    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "https://reqres.in/api/users");
    // Use request.Headers to set jwt token, ...
    // Use request.Content to send body. You can use StringContent, StreamContent, etc.
    HttpResponseMessage response = await HttpClient.SendAsync(request);
    response.EnsureSuccessStatusCode();
    using (StreamReader streamReader = new StreamReader(await response.Content.ReadAsStreamAsync()))
    using (JsonReader jsonReader = new JsonTextReader(streamReader))
    {
        List<UserDto> users = (await JToken.LoadAsync(jsonReader))["data"].ToObject<List<UserDto>>();
    }
}

public class UserDto
{
    [JsonProperty("id")]
    public int Id { get; set; }
    [JsonProperty("first_name")]
    public string FirstName { get; set; }
    [JsonProperty("last_name")]
    public string LastName { get; set; }
    [JsonProperty("avatar")]
    public string Avatar { get; set; }
}

   public interface IFilesService
    {
        DirectoryInfo GetDirectoryInfo(string directoryPath);
        void DeleteFile(string fileName);
        void WritePersonInFile(string fileName,string name, string lastName, byte age);
    }

    class FilesServices:IFilesService
    {
        public DirectoryInfo GetDirectoryInfo(string directoryPath)
        {
            return new DirectoryInfo(directoryPath);
        }

        public void DeleteFile(string fileName)
        {
            File.Delete(fileName);
            Console.WriteLine("the file has been deleted");
        }

        public void WritePersonInFile(string fileName, string name, string lastName, byte age)
        {
            var text = $"my name is {name} {lastName} with {age} years old from dotnettips.info";
            File.WriteAllText(fileName,text);
        }    
    }

    class FilesServicesProxy:IFilesService
    {
        private readonly IFilesService _filesService;

        public FilesServicesProxy()
        {
            _filesService=new FilesServices();
        }

        public DirectoryInfo GetDirectoryInfo(string directoryPath)
        {
            var existing = Directory.Exists(directoryPath);
            if (!existing)
                Directory.CreateDirectory(directoryPath);
            return _filesService.GetDirectoryInfo(directoryPath);
        }

        public void DeleteFile(string fileName)
        {
            if(!File.Exists(fileName))
                Console.WriteLine("Please enter a valid path");
            else
                _filesService.DeleteFile(fileName);
        }

        public void WritePersonInFile(string fileName, string name, string lastName, byte age)
        {
            if (!Directory.Exists(fileName.Remove(fileName.LastIndexOf("\\"))))
            {
                Console.WriteLine("File Path is not valid");
                return;
            }
            if (name.Trim().Length == 0)
            {
                Console.WriteLine("first name must enter");
                return;
            }

            if (lastName.Trim().Length == 0)
            {
                Console.WriteLine("last name must enter");
                return;
            }

            if (age<18)
            {
                Console.WriteLine("your age is illegal");
                return;
            }


            if (name.Trim().Length < 3)
            {
                Console.WriteLine("first name must be more than 2 letters");
                return;
            }

            if (lastName.Trim().Length <5)
            {
                Console.WriteLine("last name must be more than 4 letters");
                return;
            }

            _filesService.WritePersonInFile(fileName,name,lastName,age);
            Console.WriteLine("the file has been written");
        }
    }

static void Main(string[] args)
        {
            IFilesService filesService=new FilesServicesProxy();
            filesService.WritePersonInFile("c:\\myfakepath\\a.txt","ali","yeganeh",26);

            var directory = filesService.GetDirectoryInfo("d:\\myrightpath\\");
            var fileName = Path.Combine(directory.FullName, "dotnettips.txt");

            filesService.WritePersonInFile(fileName, "al", "yeganeh", 26);
            filesService.WritePersonInFile(fileName, "ali", "yeganeh", 12);
            filesService.WritePersonInFile(fileName, "ali", "yeganeh", 26);

            filesService.DeleteFile("c:\\myfakefile.txt");
            filesService.DeleteFile(fileName);
        }

File Path is not valid
first name must be more than 2 letters
your age is illegal
the file has been written
Please enter a valid path
the file has been deleted