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Rank: Newbie
Groups: Member
Joined: 12/9/2008
Posts: 3
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Using ASP.Net 2.0, I want to reference a specific menu item from the Master Page code behind. If a user is not authenticated or in the right role, I want to make certain menu items invisible. I thought that I'd do this EO.Web.NavigationItem.ItemID("mnuOffLimits").Visible = false However this and other permutations I've tried don't work. Please walk me through controlling the visibility of menu items based on user authentication and roles.
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Hi, The easiest way is to set the MenuItem's AllowRoles property: http://www.essentialobjects.com/ViewDoc.aspx?t=EO.Web.NavigationItem.AllowRoles.htmlYou can also find the corresponding menu item and set its Visible property. However your code is wrong. ItemID is an instance property and it returns the ID of the item, where you assumed it would find a matching item with the given ID value, which it does not do. The following function might be the closest to what you are looking for: http://www.essentialobjects.com/ViewDoc.aspx?t=EO.Web.BaseNavigator.FindItem.htmlAs a general guide line, you should always follow the documentation for each property/methods. Each property/method should do exactly what the documentation says it to do and not anything else. So you should always try to seek confirmation from the documentation first when you are not sure about something. Thanks
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Rank: Newbie
Groups: Member
Joined: 12/9/2008
Posts: 3
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Ok, so I used this code
Code: Visual Basic.NET
Dim valuePath As String = "mnuNavigation/mnuNewsletters/mnuArchives"
Dim item As EO.Web.MenuItem = CType(mnuNavigation.FindItem(valuePath), EO.Web.MenuItem)
item.Visible = false
But it does not work. Apparently, item is not an object. Please advise.
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Your code looks correct. If FindItem does not return you a valid item, it only means the path you give to it is wrong. So I would check the ItemID property of each MenuItem and see if they are correctly set.
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Rank: Newbie
Groups: Member
Joined: 12/9/2008
Posts: 3
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This is the error message
Object reference not set to an instance of an object.
So then I tried Dim item as new EO.Web.MenuItem = CType(mnuNavigation.FindItem(valuePath), EO.Web.MenuItem)
No luck there either.
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Simon wrote:Object reference not set to an instance of an object. We have already pointed out the reason in our previous reply. If you still have trouble with it, you may wish to ask someone around you for help. It is important for you to understand that while our support won't mind to point you to the right direction, we do not code for you, nor debug your code. So you will need to solve most of the coding issues by yourself. If you suspect there is a problem with our product, please create a test page with detailed steps to reproduce the problem. We will be happy to take a look once we have that. You can review our official support policy here: http://www.essentialobjects.com/Forum/Default.aspx?g=posts&t=1368Thanks
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