I'm working on a Webforms app, with CSS tabpages. Each tabpage contains a game. Due to the nature of the games, i have to force postbacks at various points in the app. Two of the apps have an asp:datagrid, both with a checkbox column and a text column. When i postback, the text list is retained, but the checkboxes all return to false. These checkboxes are purely for visual purposes. They have no real effect on the app, other than as a courtesy for the player to keep track of things. This is the markup...

Code:
<asp:DataGrid ID="firstList" runat="server" CssClass="setlistbox" AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateColumn HeaderText="none1" ItemStyle-Width="20">
            <ItemTemplate>
                <asp:CheckBox runat="server" ID="chkSelect" Checked='<%#Eval("Selecter").ToString() %>' />
            </ItemTemplate>
        </asp:TemplateColumn>

        <asp:BoundColumn HeaderText="none2" DataField="TextItem"></asp:BoundColumn>

    </Columns>
</asp:DataGrid>
This is how i bind it...

Code:
dt1 = New DataTable
dt1.Columns.Add("Selecter", GetType(Boolean))
dt1.Columns.Add("TextItem")

dt1.Rows.Add(False, "example")
                
firstList.DataSource = dt1
firstList.DataBind()
I tried looping through the items server side...

Code:
For Each item As DataGridItem In firstList.Items
    Dim chkBox As CheckBox = DirectCast(item.FindControl("chkSelect"), CheckBox)
    Debug.Print(chkBox.Checked.ToString)
    dt1.Rows(item.ItemIndex).ItemArray(0) = chkBox.Checked ' this doesn't save the checkboxes' state
Next
This prints out the correct values, but doesn't save the checkboxes' state

Can anyone help with this?