Help solving problem - "Public member 'Attributes' on type 'String' not found"

Hi - I need some help solving this problem.  I'm looping through a DataTable, passing values (The values are Div IDs) to a Sub routine in order to make Divs visable on my aspx page.  Currently it doesn't work.  I'm getting an error of:

Public member 'Attributes' on type 'String' not found

Can someone please look at my code and let me know how to fix it?
Imports System.Data

Partial Class MyClass
    Inherits System.Web.UI.Page

    Dim strPickTicketID As String
    Dim MyBLL As New PickPackItemsBLL
    Dim dt As DataTable

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        strPickTicketID = "4"

        dt = MyBLL.GetPickTicketItems(strPickTicketID)

        For Each row As DataRow In dt.Rows
            Call SetVisibility(row.Item("Shelf"))
        Next

    End Sub

    Sub SetVisibility(ByVal DivID As Object)
        DivID.Attributes.Add("style", "visibility:visible;")
    End Sub
End Class

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cdemott33Asked:
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HainKurtConnect With a Mentor Sr. System AnalystCommented:
try this as is

Sub SetVisibility(ByVal DivID As String)
  dim myDiv as control = me.FindControl(DivID)
  myDiv.Visible = True
End Sub

assuming you set visible= false by default like

<div runat=server id=DivA visible=false>....</div>
<div runat=server id=DivB visible=false>....</div>

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HainKurtSr. System AnalystCommented:
maybe this

Sub SetVisibility(ByVal DivID As String)
  dim myDiv as control = me.FindControl(DivID)
  myDiv.Attributes.Add("style", "visibility:visible;")
End Sub

assuming you have lots of divs on aspx like this

<div runat=server id=DivA>....</div>
<div runat=server id=DivB>....</div>

and from db, you get "DivA", "DivB" etc...

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cdemott33Author Commented:
You are correct.  My divs are set up exactly as you noted.

I added the code you suggested but got the following error
Compiler Error Message: BC30456: 'Attributes' is not a member of 'System.Web.UI.Control'.

Source Error:

 

Line 22:     Sub SetVisibility(ByVal DivID As Object)
Line 23:         Dim myDiv As Control = Me.FindControl(DivID)
Line 24:         myDiv.Attributes.Add("style", "visibility:visible;")
Line 25:     End Sub
Line 26: End Class

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cdemott33Author Commented:
Excellent!  That worked.  Thanks you for your help.  It was greatly appreciated.
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