I writing my first module and I have been able to follow most of the tutorials on the web.  This module follows the model described on Adefwebserver, using ObjectDataSource controls to connect the presentation layer and the BLL(OvertimeController).  Anything I try to do in the Page_Load Event causes NullReferenceException.

"Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at PSLPD.Modules.OverTime.ViewOverTime.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace"

The patricular piece of code that is causing the error now is:

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

Try

Dim objModules As ModuleController = New ModuleController

'Sets ShiftIsFilledMessage to False until raised by the DetailsView1_ItemUpdating

ShiftIsFilledMessage.Visible = False

Catch ex As Exception

Exceptions.ProcessModuleLoadException(Me, ex)

End Try

End Sub

If I rem out the line in red everything works, except the label is visible.  I had the same problem trying to load a popup calendar in the Page_Load.  The label is declared in the #Controls Section:

Vladan, Thanks for the help.  I'm new to Dnn Modules and this really has me stumped.  I believe I have inhertited the PortalModuleBase correctly.

Imports DotNetNuke

Imports System.Web.UI

Imports System.Web.UI.WebControls

Imports System.Collections.Generic

Imports System.Globalization

Imports System.Text

Imports System.Reflection

Imports DotNetNuke.Entities.Modules

Namespace PSLPD.Modules.OverTime

Partial Class ViewOverTime

Inherits DotNetNuke.Entities.Modules.PortalModuleBase

Implements DotNetNuke.Entities.Modules.IActionable

I am not sure what you are talking about with the .designer file, where would I find that?

Here is the control from the ascx page.

<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" CellPadding="4"

DataSourceID="ObjectDataSource_OTDetail" DataKeyNames="ID" ForeColor="#333333" GridLines="None"

Height="50px" Width="125px" BorderColor="Gray" BorderStyle="Ridge">

<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />

<CommandRowStyle BackColor="#E2DED6" Font-Bold="True" />

<EditRowStyle BackColor="#999999" />

<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />

<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />

<Fields>

<asp:BoundField Fields Omitted to shorten Message

<asp:CommandField ShowEditButton="True" EditText="Sign-Up" />

</Fields>

<FieldHeaderStyle BackColor="#E9ECF1" Font-Bold="True" />

<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />

<HeaderTemplate>

You have Selected to Sign-Up for...

</HeaderTemplate>

<AlternatingRowStyle BackColor="White" ForeColor="#284775" />

<FooterTemplate>

<asp:Label ID="ShiftIsFilledMessage" runat="server" BackColor="Yellow" BorderColor="Red"

BorderStyle="Ridge" EnableViewState="False" Font-Bold="True" ForeColor="Red"

Text="This Shift is Already Filled!" ToolTip="The Shift is Filled, Select Another Shift from the OT Board." Visible="True"></asp:Label>

</FooterTemplate>

</asp:DetailsView>

 The ShiftIsFilledMessage Label is in the FooterTemplate and I want to hide it on Page_Load and have only visible if a condition is met during the DetailsView1_ItemUpdating method.

Any help is greatly appreciated.

John

Purplebox,

Thanks for the help, both ideas worked.  I'll keep investigating why the label won't work in the footer template, and that might help me understand why the pop-up calendar in a formview is giving me the same problem.