public bool UpdateProjectComment(ProjectComment instance)
 {
     try
     {
         ProjectComment comment = Db.ProjectComments.Find(instance.ProjectCommentId);
         Type type = comment.GetType();
         foreach(var info in type.GetProperties())
         {
             if(info.CanWrite)
             {
                 var value = info.GetValue(instance);
                 if(value != null)
                 {
                     info.SetValue(comment, value, null);
                 }
             }
         }
         Db.SaveChanges();
         return true;
     }
     catch
     {
         return false;
     }
 }
 public bool CreateProjectComment(ProjectComment instance)
 {
     try
     {
         if (instance.ProjectCommentId == 0)
         {
             Db.ProjectComments.Add(instance);
             Db.SaveChanges();
             return true;
         }
         return false;
     }
     catch
     {
         return false;
     }
 }