protected void bt_AddOption_Click(object sender, EventArgs e) { if ((int)ViewState["ID"] > 0) { QNA_QuestionBLL q = new QNA_QuestionBLL((int)ViewState["ID"]); QNA_QuestionOption o = new QNA_QuestionOption(); o.OptionName = tbx_OptionName.Text; o.NextQuestion = int.Parse(ddl_NextQuestion.SelectedValue); o.CanInputText = ddl_YesOrNo.SelectedValue; o.Question = (int)ViewState["ID"]; q.AddDetail(o); BindGrid(); tbx_OptionName.Text = ""; ddl_NextQuestion.SelectedValue = "0"; ddl_YesOrNo.SelectedValue = "N"; } }