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Rank: Newbie
Groups: Member
Joined: 2/18/2008
Posts: 5
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Hi, i'm looking at the SlideMenu control and using the databinding demo code to evaluate it (from the Menu control), but the problem i have is that the menu will not expand and instead just navigates to the URL for that parent node. It's using this datatable from your example:
Code: Visual Basic.NET
Dim table As New DataTable()
table.Columns.Add("Country", GetType(String))
table.Columns.Add("State", GetType(String))
table.Columns.Add("City", GetType(String))
table.Columns.Add("WebSite", GetType(String))
table.Columns.Add("Population", GetType(Integer))
table.Rows.Add(New Object() {"U.S.A", "GA", "Atlanta", "Category.aspx?c=20", "123456"})
table.Rows.Add(New Object() {"U.S.A", "GA", "Savannah", "Category.aspx?c=20", "200000"})
table.Rows.Add(New Object() {"U.S.A", "FL", "Miami", "Category.aspx?c=20", "3000"})
table.Rows.Add(New Object() {"U.S.A", "FL", "Orlando", "Category.aspx?c=20", "4000"})
table.Rows.Add(New Object() {"Canada", "ON", "Toronto", "Category.aspx?c=20", "50000"})
and this in the Page_Load:
Code: Visual Basic.NET
' Bind the "Website" column in the table to "NavigateUrl"
' property.
Dim binding As New EO.Web.DataBinding()
binding.DataField = "WebSite"
binding.Property = "NavigateUrl"
' Add this MenuDataBinding class into the group's binding
' collection.
SlideMenu1.Bindings.Add(binding)
if i remove the binding, it expands as expected but not menu items have a navigate URL. Can you please point me to demo code for databinding using the SlideMenu? Thanks.
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,218
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Hi, Expand/collapse occurs within the same page. So when you navigate to another page, the expand/collapse status is lost. The easiest way to make the slide menu expand/collapse across pages is to set this property to "NavigateUrl": http://www.essentialobjects.com/ViewDoc.aspx?t=EO.Web.BaseNavigator.AutoSelectSource.htmlThis way when you navigate to the new page, the slide menu automatically select (for slide menu, that also means expand) the item whose NavigateUrl matches the current page Url. Thanks
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Rank: Newbie
Groups: Member
Joined: 2/18/2008
Posts: 5
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Can i not have it so that the parent menu items don't navigate, just expand, but only the child items do navigate?
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,218
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Hi, Yes. In that case you should not give the parent item NavigateUrl. When the slide menu populates from a DataTable, it uses the first row of the same group to populate the parent item, so the following row is used to populate both the parent item and the first child item: table.Rows.Add(New Object() {"U.S.A", "GA", "Atlanta", "Category.aspx?c=20", "123456"}) Thus the parent item also gets NavigateUrl value "Category.aspx?c=20". There are a number of ways to avoid this: 1. Set your DataBinding object's Depth property to 1. That way it would skip level 0, which is the top level; or 2. Clear out NavigateUrl once you are done with data binding:
Code: C#
SlideMenu1.DataBind();
foreach (EO.Web.MenuItem item in SlideMenu1.Items)
item.NavigateUrl = null;
3. You can also handle the slide menu's ClientSideOnItemClick to return false for top level items. This would be an option if you are already handling client side event. Otherwise it might be too much work; Thanks
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Rank: Newbie
Groups: Member
Joined: 2/18/2008
Posts: 5
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Thanks, number 1 did the trick!
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Rank: Newbie
Groups: Member
Joined: 2/18/2008
Posts: 5
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Hi, just to follow up on something here, can i use something like option 2 method to go through all the items in a menu - as the SlideMenu1.Items only seems to contain the toplevel items and not the submenu items, etc. I want to go through all menu items and replace empty ones.
Thanks
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,218
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Hi,
You can do that by check each menu item's SubMenu property, then check SubMenu.Items property, and so on. Menu items are organized like file directories. At any time you only see one level below.
Thanks
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Rank: Newbie
Groups: Member
Joined: 2/18/2008
Posts: 5
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That's great, seems to work well. I've got one more question for you. When binding data to the slidemenu via a datatable, i setup my SlideMenu1.DataFields which determine what text is displayed for each menu item level, but can i access the other data (loaded from the datatable)? I want to amend some of the NavigateUrl properties by adding on the ID of each record to the NavigateUrl as a querystring - can i access this data from the SlideMenu control?
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,218
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You can access data from the same record, but not from other record. To do so you would handle the slide menu's ItemDataBound event. Inside that event you can modify the menu item's properties based on the menu item's DataItem property: http://www.essentialobjects.com/ViewDoc.aspx?t=EO.Web.NavigationItem.DataItem.html
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