private bool IsDataValidOnSave()
        {
            bool          isValid       = true;
            bool          isSessionLive = true;
            StringBuilder script        = new StringBuilder();

            //if (Commons.GetCurrentLoginUser() == null)
            //{
            //    script.Append("Session is expired!");
            //    isSessionLive = false;
            //}

            if (txtNik.Text == "")
            {
                script.Append("NIK has to be filled!");
                txtNik.Focus();
            }
            else if (txtNameEmployee.Text == "")
            {
                script.Append("NameEmployee has to be filled!");
                txtNameEmployee.Focus();
            }
            else if (lblNamePhoto.Text == "")
            {
                script.Append("Upload Photo has to be filled!");
                FileUpload_Photo.Focus();
            }

            if (script.Length > 0)
            {
                isValid = false;

                if (isSessionLive)
                {
                    ScriptManager.RegisterStartupScript(this.Page, typeof(String), "Validation", "alert('" + script.ToString() + "');", true);
                }
                else
                {
                    ScriptManager.RegisterStartupScript(this.Page, typeof(String), "Validation", "alert('" + script.ToString() + "');window.close();", true);
                }
            }

            script = null;
            return(isValid);
        }