static bool Ft_Check_Equals_Pic(List <Id_Picture> mas, Id_Picture obj)
 {
     foreach (Id_Picture item in mas)
     {
         if (String.Equals(item.id, obj.id) == true)
         {
             return(false);
         }
     }
     return(true);
 }
        static int Ft_Final_Rec_Pic(List <IWebElement> webElements, IWebElement iteam,
                                    List <string> list_id, int col, int i, bool flag)
        {
            string id;

            id = iteam.FindElement(By.CssSelector("._post.post")).GetAttribute("id");
            list_id.Add(id);
            List <string>      str     = new List <string>();
            List <IWebElement> Exploer = iteam.FindElements(By.TagName("a")).ToList();

            foreach (IWebElement web in Exploer)
            {
                if (web.GetAttribute("style") != null && web.GetAttribute("style") != "")
                {
                    str.Add(web.GetAttribute("style"));
                }
            }
            Id_Picture pic = new Id_Picture(id, str);
            DataContractJsonSerializer jsonFormatter = new DataContractJsonSerializer(typeof(List <Id_Picture>));
            List <Id_Picture>          mas           = new List <Id_Picture>();
            FileInfo fileInfo = new FileInfo(@"E:\institute\operating-system\Chrome\WindowsFormsApp1\WindowsFormsApp1\bin\Debug\ID_Picture.json");

            if (flag == true)
            {
                mupic.WaitOne();
            }
            FileStream fs1 = new FileStream(@"E:\institute\operating-system\Chrome\WindowsFormsApp1\WindowsFormsApp1\bin\Debug\ID_Picture.json", FileMode.OpenOrCreate);

            if (fileInfo.Length > 0)
            {
                mas = jsonFormatter.ReadObject(fs1) as List <Id_Picture>;
            }
            if (Ft_Check_Equals_Pic(mas, pic) == true)
            {
                mas.Add(pic);
                fs1.Position = 0;
                jsonFormatter.WriteObject(fs1, mas);
                i++;
            }
            fs1.Close();
            if (flag == true)
            {
                mupic.ReleaseMutex();
            }
            return(i);
        }