ListView controls display wrong data the 3rd time - asp.net

Question

I have a ListView that populates and displays a user's data (via a profile system in VWD 2008) during Page_Load and also when I go from the EditItemTemplate to the ItemTemplate.
When I go to the edit screen again, my DropDownList and RadioButtonList controls display the first items in the corresponding tables instead of the correct profile values.
I don't understand why the controls populate correctly the first and second times but not on the third time (that's right, the third time is NOT a charm).
Can someone can help me understand how to solve this problem?
ItemTemplate:
<asp:DropDownList ID="ddlTState" AppendDataBoundItems="True"
DataSourceID="srcState" DataTextField="StateName" DataValueField="StateName"
Enabled="False" TabIndex="125" runat="server" />
EditItemTemplate:
<asp:DropDownList ID="ddlEState" AppendDataBoundItems="true"
DataSourceID="srcState" DataTextField="StateName"
DataValueField="StateName" TabIndex="125" runat="server">
<asp:ListItem Text="--State--" Value="" />
VB code behind
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
lsv = Util.FindChild(Me, "lsvProfile")
'If Not IsPostBack Then
ddl = Util.FindChild(lsv, "ddlEState") 'Util.FindChild = my version of FindControl
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.State
ddl = Util.FindChild(lsv, "ddlTState")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.State
'End If
End Sub

Answer 1

It could be it's hitting the null condition and not writing; a better way to handle items/edit template is to tap into the ItemDataBound event or ItemCreated event handlers. This features at the time it creates the row, and you will have better success there. I believe you could also leverage ItemEditing, which fires when a row switches to edit mode, as another way to process an edit action.
EDIT: Try to do this:
protected void lsvProfile_ItemDataBound(..)
{
if (e.Item.ItemTYpe == ListViewItemType.DataItem)
{
DropDownList d = e.Item.FindControl("ddlTState") as DropDownList;
}
}
And debug to see if that is null or not null. The only time that should be null is if its rendering the header/footer or the edit item... That should work though, I do that all the time.
HTH.

Answer 2

Thanks, Brian. I resolved it with this code before I read your latest post:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
lsv = Util.FindChild(Page, "lsvProfile")
If Not IsPostBack Then
Try
lsv.EditIndex = 0
rbl = Util.FindChild(lsv, "rblEGender")
If rbl IsNot Nothing Then rbl.SelectedValue = Profile.Gender
ddl = Util.FindChild(lsv, "ddlEState")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.State
ddl = Util.FindChild(lsv, "ddlEBirthDay")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.BirthDay
ddl = Util.FindChild(lsv, "ddlEBirthMo")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.BirthMo
Catch ex As Exception
End Try
End If
End Sub
Protected Sub lsvProfile_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewItemEventArgs) Handles lsvProfile.ItemDataBound
ddl = Util.FindChild(Me, "ddlEState")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.State
ddl = Util.FindChild(Me, "ddlEBirthMo")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.BirthMo
ddl = Util.FindChild(Me, "ddlEBirthDay")
If ddl IsNot Nothing Then ddl.SelectedValue = Profile.BirthDay
rbl = Util.FindChild(Me, "rblEGender")
If rbl IsNot Nothing Then rbl.SelectedValue = Profile.Gender
End Sub