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BOOK: Professional ASP.NET 4 : in C# and VB
This is the forum to discuss the Wrox book Professional ASP.NET 4 in C# and VB by Bill Evjen, Scott Hanselman, Devin Rader; ISBN: 9780470502204
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Old December 16th, 2010, 08:53 AM
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Default FindControl() doesn't find control in a detailsView

I am trying to set the focus on a textbox in a detailsView when its current mode is Insert or Edit.
Here is the template field in the .aspx file:
                                        <asp:TemplateField HeaderText="<%$ Resources:Tabelas, Cadeiras.NomeCadeira %>" SortExpression="NomeCadeira">
                                                <asp:TextBox ID="NomeCadeira" runat="server" Text='<%# Bind("NomeCadeira") %>'></asp:TextBox>
                                                <asp:TextBox ID="NomeCadeira" runat="server" Text='<%# Bind("NomeCadeira") %>'></asp:TextBox>
                                                <asp:Label ID="Label1" runat="server" Text='<%# Bind("NomeCadeira") %>'></asp:Label>
                                            <HeaderStyle Font-Bold="True" HorizontalAlign="Right" />
                                            <ItemStyle HorizontalAlign="Left" />
I tryed to use the following code in the DetailsView ModeChanged event, in the Page_Load event and in the Page_LoadComplete event:
        If DetailsView1.CurrentMode = DetailsViewMode.Insert Or DetailsView1.CurrentMode = DetailsViewMode.Edit Then

            Dim textBoxNomeCadeira = CType(FindControl("NomeCadeira"), TextBox)

        End If
but the textBoxNomeCadeira is always set to Nothing, meaning that the FindControl() function doesn't find the textBox "NomeCadeira".
How should I reference the textBox in the detailsView, in Insert or Edit Mode, to set the focus to it?

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Old December 16th, 2010, 11:47 AM
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Eventually I found that using the DataBound event of the DetailsView solved the problem.
Probably in the other events used (ModeChanged, Page_Load and Page_LoadComplete) the controls are still not available for the FindControl() function. (??!!)

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