Add tooltip to asp:ObjectDataSource / Drop down list

[slimshady]

I'm trying to add a "tooltip" or "onhoover" or something to the values in a drop down list. I want to have an explanation to each "row" in the drop down... Is this possible?!

 

The drop down is created as a user control which I then use on my aspx page.

 

Ascx page:

<asp:ObjectDataSource ID="mObjectDataSource" runat="server" 
   SelectMethod="SelectAll" TypeName="DB.MasterDao">
</asp:ObjectDataSource>

 

 

CodeBehind:

    
Public ReadOnly Property MasterDropDownList() As DropDownList
       Get
           Return mMasterDropDownList
       End Get
   End Property

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
       If Not IsPostBack Then
           BindControls()
       End If
   End Sub

Private Sub BindControls()
       BindControl(mMasterDropDownList)
       'other code
   End Sub

Private Sub BindControl(ByVal pControl As DropDownList)
       With pControl
           Dim i As New ListItem
           i.Text = "All" 'The first item in drop down says "All" (if user wants to search for all)
           i.Value = 0
           .Items.Clear()
           .Items.Add(i)
           If .SelectedIndex <> 0 Then
               .DataBind()
           End If
       End With
   End Sub

 

I see that I can in the Sub BindControl set tooltip for pControl, but I don't get any results by for exmple writing .tooltip = "test".

 

Anyone out there who knows how to do this?