protected void ChangeStatus_Click(object sender, EventArgs e)
 {
     if (StatusDropDown.SelectedIndex > 0)
     {
         AttendRegistrationEngine.CopyParticipantsChangeStatus(StatusDropDown.SelectedValue, StatusMailCheckBox.Checked);
     }
     System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "scriptid", "window.parent.location.href='" + EPiServer.Editor.PageEditing.GetEditUrl((CurrentPage as IContent).ContentLink) + "'", true);
 }