protected void btnAdd_Click(object sender, EventArgs e) { MarketingAgent marketingAgent = new MarketingAgent(); // marketingAgent.MarketingAgentID= int.Parse(ddlMarketingAgentID.SelectedValue); marketingAgent.MarketingAgenName = txtMarketingAgenName.Text; int resutl = MarketingAgentManager.InsertMarketingAgent(marketingAgent); Response.Redirect("AdminDisplayMarketingAgent.aspx"); }