Sub items for server control

Question

I've been trying to create a server control. I've been trying to get my MenuItem to contain other MenuItems under neath it like this

<cc1:DynamicMenu ID="DynamicMenu1" runat="server">
    <MenuItems>
        <cc1:MenuItem Text="" Url="">
            <cc1:MenuItem Text="" Url="">
                <cc1:MenuItem Text="" Url=""></cc1:MenuItem>
            </cc1:MenuItem>
            <cc1:MenuItem Text="" Url="">
                <cc1:MenuItem Text="" Url=""></cc1:MenuItem>
            </cc1:MenuItem>                
        </cc1:MenuItem>
    </MenuItems>
</cc1:DynamicMenu>

but my code only gives me this

<cc1:DynamicMenu ID="DynamicMenu1" runat="server">
    <MenuItems>
        <cc1:MenuItem Text="" Url="">No other child elements for MenuItem</cc1:MenuItem>
    </MenuItems>
</cc1:DynamicMenu>

I have played around with ParseChildren and PersistChildren swaping there values from true or false and I've run out of ideas could someone please help me with to resolve my problem below is my code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Permissions;
using System.Collections;

namespace Gravity.Controls
{
[AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[ParseChildren(true), PersistChildren(true)]
[ToolboxData("<{0}:DynamicMenu runat=\"server\"></{0}:DynamicMenu>")]    
public class DynamicMenu : WebControl
{
    public DynamicMenu()
    {

    }

    List<MenuItem> _menuItems;
    [PersistenceMode(PersistenceMode.InnerProperty)]          
    public List<MenuItem> MenuItems
    {
        get
        {
            if(_menuItems == null)
                _menuItems = new List<MenuItem>();
            return _menuItems;
        }
    }
}

[ParseChildren(false), PersistChildren(true)]    
public class MenuItem: INamingContainer
{
    private string _text;
    private string _url;

    public MenuItem(string text, string url)
    {

    }
    public MenuItem()
        : this("", "")
    {

    }

    public string Text
    {
        get
        {
            return _text;
        }
        set
        {
            _text = value;
        }
    }

    public string Url
    {
        get
        {
            return _url;
        }
        set
        {
            _url = value;
        }
    }

    private List<MenuItem> _subMenuItems;       
    public List<MenuItem> SubMenuItems
    {
        get
        {
            if (_subMenuItems == null)
                _subMenuItems = new List<MenuItem>();
            return _subMenuItems;
        }
    }
}
}

Did you figure out how to do it? I'm having the same issue, but neither of the two answers helped. — daniatic, Apr 18 '13 at 16:51

score 1 · Accepted Answer · answered Apr 17 '11 at 03:29

1

You need to dynamically add an instance of your custom control to itself in the OnItemDataBound event. This will re-curse until your business logic condition is met(ie:no children, so don't add another control) within the OnItemDataBound.

answered Apr 17 '11 at 03:29

rick schott

21,012
5
52
81

Can you edit my code and give me an example of what it should do cos I don't know what your talking about – ONYX Apr 17 '11 at 03:30
Can't find anything on the internet in regards to the methods in which you suggested I should take – ONYX Apr 17 '11 at 04:53

score 1 · Answer 2 · edited Aug 14 '11 at 12:51

1

I think you should use these attribs:

[ParseChildren(true), PersistChildren(false)]  
public class DynamicMenu

and

[ParseChildren(typeof(MenuItem), DefaultProperty = "SubMenuItems", ChildrenAsProperties = true)] 
public class MenuItem

edited Aug 14 '11 at 12:51

McDowell

107,573
31
204
267

answered Aug 14 '11 at 09:59

saeed serpooshan

11
1

Sub items for server control

2 Answers2