[RESOLVED] [02/03] AddHandler to CheckBox in datagrid

[wild_bill]

I've got the following item in my grid

<ItemTemplate>
	<asp:CheckBox Checked='<%# DataBinder.Eval(Container.DataItem, "Status") %>' ID="chkNpi" Runat="server" 
	AutoPostBack="True" Text='<%# DataBinder.Eval(Container.DataItem, "NPI") %>' />
</ItemTemplate>

And the following code in my code behind, but my check changed event never fires. The addHandler code is being executed in the ItemDataBound event. Any ideas?

Public Sub dgProvider_ItemDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) _
    Handles dgProvider.ItemDataBound
        Dim chkNpi As Control = e.Item.FindControl("chkNpi")
        If Not chkNpi Is Nothing Then
            AddHandler DirectCast(chkNpi, CheckBox).CheckedChanged, AddressOf chkNpi_CheckedChanged
        End If
    End Sub
 
    Public Sub chkNpi_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        Dim busProvider As New BCBSMT.ProviderBC
    End Sub

[mendhak]

But that's a dynamic handler. You've added it yourself and I don't think it will maintain its viewstate because you created it in ItemDataBound. ItemDataBound isn't called everytime, is it?

You must do your AddHandler in the ItemCreated event of 'dgProvider'. Or, I think you can also specify OnCheckChanged as an event handler in the asp:checkbox in the ItemTemplate itself.