Unable to cast object of type 'System.EventArgs' RSS

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  MKozlowski

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  Unable to cast object of type 'System.EventArgs'

  May 16, 2012 12:17 PM|LINK

  Hi,

  I am trying to hide certain items from my menu and I getting an error "Unable to cast object of type 'System.EventArgs' to type 'System.Web.UI.WebControls.MenuEventArgs'."

  Any ideas?

  Protected Sub MainMenu_DataBinding(sender As Object, e As MenuEventArgs) Handles MainMenu.DataBinding
          If user = "someone" Then
              'Check for Roles or users here
              If e.Item.Text = "Projects" OrElse e.Item.Text = "administration" Then
                  e.Item.Parent.ChildItems.Remove(e.Item)
              End If
          End If
  
      End Sub

  
  

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  robwscott

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  1491 Posts

  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 12:33 PM|LINK

  you need to parse

  protected void MainMenu_MenuItemDataBound(object sender, MenuEventArgs e)
  {
        MenuItem menu = ((MenuItem)e.Item);
        if (menu.Text == "Projects" || menu.Text == "administration")
        {
             MainMenu.Items.Remove(menu);
        }
  }

  Please post your code for us to help!!
  Mark Answered if it helps - Good luck!
  Cheers!
  Design And Align
  - Rob
  
  • Marked as answer by MKozlowski on May 16, 2012 03:47 PM
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  Kulrom

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  892 Posts

  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 12:33 PM|LINK

  Use the MenuItemDataBound event instead. I think it will work

  Protected Sub MainMenu_MenuItemDataBound(sender As Object, e As System.Web.UI.WebControls.MenuEventArgs) Handles MainMenu.MenuItemDataBound
          If user = "someone" Then
              'Check for Roles or users here
              If e.Item.Text = "Projects" OrElse e.Item.Text = "administration" Then
                  e.Item.Parent.ChildItems.Remove(e.Item)
              End If
          End If
      End Sub

  
  
  

  Remember to click Mark As Answer when you get a reply which answers your question.
  My Blog: ASP.NET Stuff
  
  • Marked as answer by MKozlowski on May 16, 2012 02:00 PM
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  MKozlowski

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  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 12:50 PM|LINK

  Ok that works for the sub menus. If I want to hide a whole tab can this be done also?. The tab text is Administration.

  • Edited by MKozlowski on May 16, 2012 12:53 PM
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  Kulrom

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  892 Posts

  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 03:01 PM|LINK

  I am not sure i understand entirely but if you want to hide the administration then just use remove method again.

  If e.Item.Text = "administration" Then
     MainMenu.Items.Remove(e.Item)
  End If

  
  
  

  Remember to click Mark As Answer when you get a reply which answers your question.
  My Blog: ASP.NET Stuff
  
  • Marked as answer by MKozlowski on May 16, 2012 03:39 PM
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  MKozlowski

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  573 Posts

  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 03:41 PM|LINK

  That works for first tab "projects" but it doesnt see the other tab called adminstration? Is there a way to hide the second tab? I have 2 main tabs. Thanks!

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  MKozlowski

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  573 Posts

  Re: Unable to cast object of type 'System.EventArgs'

  May 16, 2012 03:47 PM|LINK

  nm got it working thanks for all your help.

  If e.Item.Text = "Projects" OrElse e.Item.Text = "Administration" Then
              MainMenu.Items.Remove(e.Item)
          End If