e.Item is null in DataGrid OnUpdateCommand

[RobHudson]

Hi

I am using the EditCommandColumn column in a DataGrid and e.Item is null in the OnUpdateCommand event code.

Any ideas why? No doubt I am doing something worng...

Page side is:

    <asp:DataGrid ID="dgUsers" runat="server" AutoGenerateColumns="False" HeaderStyle-CssClass="thCopy" DataKeyField="ID"
                  OnItemCreated="dgUsers_ItemCreated"
                  OnItemDataBound="dgUsers_ItemDataBound"
                  OnEditCommand="dgUsers_OnEditCommand"
                  OnCancelCommand="dgUsers_OnCancelCommand"
                  OnDeleteCommand="dgUsers_OnDeleteCommand"
                  OnUpdateCommand="dgUsers_OnUpdateCommand">
        <Columns>
            <asp:TemplateColumn HeaderText="Username">
                <ItemTemplate><%# DataBinder.Eval(Container.DataItem, "Username")%></ItemTemplate>
                <EditItemTemplate><asp:TextBox id="txtUsername" runat="server" CssClass="textInput" Text='<%# DataBinder.Eval(Container.DataItem, "Username")%>'></asp:TextBox></EditItemTemplate>
                <FooterTemplate><asp:TextBox id="txtUsername" runat="server" CssClass="textInput" Text=""></asp:TextBox></FooterTemplate>
            </asp:TemplateColumn>
            
            <asp:EditCommandColumn CancelText="[cancel]" EditText="[edit]" UpdateText="[save]" HeaderText="Action"></asp:EditCommandColumn>
            <asp:ButtonColumn Visible="false" CommandName="Delete" Text="[delete]"></asp:ButtonColumn>
        </Columns>    
    </asp:DataGrid>

and server side is

        protected void dgUsers_OnUpdateCommand(object sender, DataGridCommandEventArgs e)
        {
            //Save
            SaveUser(e.Item);

            //Reset and reload
            lbCancelNew_Click(sender, e);
            LoadUsers();
        }

Thanks for your help
Rob

 

[RobHudson]

Well a follow up...

e.Item (after a reboot) is now not null! Unfortunately the e.Item.DataItem that I ultimately needed to use is null.

Needless to say - rebooting hasn't fixed this one!

I have done a workaround by reloading the original data for that row instead.

Used this to get the data's ID:

dgUsers.DataKeys[e.Item.ItemIndex]

I'm guessing this is has something to do with ViewState - but I'm not sure...