C#網頁彈出框

1. 有確認，取消

<asp:Button runat="server" ID="Loginin" CssClass="btn btn-inverse" Text="Login" 
                        οnclick="submit_Click" Width="68px" OnClientClick ="javascript:return confirm('確認登錄嗎？');" /></span>

2. 動作執行完提示

Page.ClientScript.RegisterStartupScript(this.GetType(), "alert", "<script>alert('查無資料');</script>");