protected void Page_Load(object sender, EventArgs e) { _messageSender = (Person)Session["CurrentUser"]; if (!IsPostBack) { var toList = new List <string>(); if (_messageSender is Teacher) { toList.Add("ילד ספציפי"); toList.Add("כל ילדי הגן"); toList.Add("מפקחת"); } if (_messageSender is Supervisor) { toList.Add("גננת"); toList.Add("ילדי המחוז"); toList.Add("גננות המחוז"); } Who.DataSource = toList; Who.AutoPostBack = true; Who.DataBind(); if (_messageSender is Child) { Who.Visible = false; WhoLable.Visible = true; } } }