杂乱

 <asp:LinkButton ID="Button1" runat="server" Text="退出系統" ValidationGroup="adfs" OnClick="Button1_Click"

                                    OnClientClick="return confirm('認定要退出系統嗎?')" />

 protected void Button1_Click(object sender, EventArgs e)
    {
        Session.Remove("UserName");
        Session.Remove("Pwd");
        Session.RemoveAll();
        Response.Redirect("Login.aspx");
    }

  string sql = "select count(*) from users where userid=@userId and (usertype='Administrators' or usertype='admin') and company=@company";