protected void btnDelete_Click(object sender, EventArgs e)
 {
     try
     {
         var delete = PostManager.DeleteById(int.Parse(PostId.Text));
         if (delete)
         {
             Response.Redirect("Index2.aspx");
         }
         else
         {
             Response.Redirect("Error.aspx");
         }
     }
     catch (Exception ex)
     {
         throw;
     }
 }