ASPX side:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="
http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<br />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Show Other Buttons" />
<br />
<br />
<asp:PlaceHolder ID="Buttons" Visible="false" runat="server">
<asp:Button ID="Button1" runat="server" Text="Ungdom" />
<asp:Button ID="Button3" runat="server" Text="Aktive" />
<asp:Button ID="Button4" runat="server" Text="Passive" />
</asp:PlaceHolder>
</div>
</form>
</body>
</html>
Codebehind:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button2_Click(object sender, EventArgs e) {
Buttons.Visible = true;
}
}