DropDownList1.SelectedItem.Attributes.Add("style", "Color:GREEN")
This is set when a person clicks a button, "resubmit order"... then the selected item is turned green so they know they've already fixed that order item.
Now if I select a different item, the page posts back to grab new information for another order...., but the previously set dropdownlist item, is no longer green.
I'm not refilling the dropdown, if the postback=true, so I have no idea why the viewstate is not keeping the attributes of the dropdown list items.
How can I preserve the color of dropdownlist items, after a postback ?
----------------------
Try this:
Protected Sub Page_PreRender(ByVal sender As Object, ByVal e As EventArgs)
For Each index As Integer In Me.SelectedItems
DropDownList1.Items(index).Attributes.Add("style", "Color:GREEN;background:red")
Next
End Sub
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
'DropDownList1.SelectedItem.Attributes.Add("style", "Color:GREEN");
Dim selecteditems As List(Of Integer) = Me.SelectedItems
selecteditems.Add(DropDownList1.SelectedIndex)
Me.SelectedItems = selecteditems
End Sub
Private _SelectedItems As List(Of Integer)
Public Property SelectedItems() As List(Of Integer)
Get
If ViewState("SelectedItems") IsNot Nothing Then
_SelectedItems = DirectCast(ViewState("SelectedItems"), List(Of Integer))
Else
_SelectedItems = New List(Of Integer)()
End If
Return _SelectedItems
End Get
Set(ByVal value As List(Of Integer))
ViewState("SelectedItems") = value
End Set
End Propertyhttp://forums.asp.net/p/1159612/1913450.aspx
http://www.experts-exchange.com/Programming/Languages/.NET/ASP.NET/Q_25339597.html