Find control in DataList HeaderTemplate

Question

QUESTION

How to change the value of a control inside the header template of a DataList based on the value of a DataItem?

I cannot change the value in ListItemType.HeaderItem because I do not know what value to set it too until the ListItem is bound.

ASP.NET

<asp:DataList ID="dl" runat="server" ShowHeader="true">
  <HeaderTemplate>
    <asp:Label ID="lbl" runat="server" Text="MyText" />
  </HeaderTemplate>
  <ItemTemplate>

  </ItemTemplate>
</asp:DataList>

CODE BEHIND

  Protected Sub dl_ItemDataBound(sender As Object, e As DataListItemEventArgs) Handles dl.ItemDataBound
    If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
      Dim Type As Integer = e.Item.DataItem("Type")

      If Type = 0 Then
        'Change lbl text in HeaderTemplate
      End If

    End If
  End Sub

Answer 1

Use below code:

  Private headerItem As DataListItem

  Protected Sub dl_ItemDataBound(sender As Object, e As DataListItemEventArgs) Handles dl.ItemDataBound

            If e.Item.ItemType = ListItemType.Header Then
                headerItem = e.Item
            End If
            If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
               Dim Type As Integer = e.Item.DataItem("Type")

               If Type = 0 Then
                    Dim lbl As Label = CType(headerItem.FindControl("lbl"), Label)
                    lbl.Text = "New Text"
               End If

            End If
  End Sub