How to get a checkbox id through a table dimanica

Good morning, I wonder how I can get the id of a checkbox that is in a table with data generated from sqlserver.

This is how the design of the table is:

<asp:GridView ID="GridViewTable" runat="server" AutoGenerateColumns="False" ShowHeaderWhenEmpty="true" Width="100%" cssClass="table table-responsive">
            <Columns>
                <asp:BoundField DataField="name" HeaderText="Lineas" />
                <asp:templatefield HeaderText="ALL" ControlStyle-CssClass="clase" >
                    <itemtemplate>
                        <asp:checkbox ID="csSelectAll" 
                        CssClass="gridCB" runat="server"></asp:checkbox>
                    </itemtemplate>
                 </asp:templatefield>
                <asp:templatefield HeaderText="Turno A">
                    <itemtemplate>
                        <asp:checkbox ID="csSelectA" 
                        CssClass="gridCBA" runat="server"></asp:checkbox>
                    </itemtemplate>
                 </asp:templatefield>
                <asp:templatefield HeaderText="Turno B">
                    <itemtemplate>
                        <asp:checkbox ID="csSelectB" 
                        CssClass="gridCB" runat="server"></asp:checkbox>
                    </itemtemplate>
                 </asp:templatefield>
                <asp:templatefield HeaderText="Turno C">
                    <itemtemplate>
                        <asp:checkbox ID="csSelectC" 
                        CssClass="gridCC" runat="server"></asp:checkbox>
                    </itemtemplate>
                 </asp:templatefield>

and that's how I fill it:

SqlDataAdapter adapter = new SqlDataAdapter("SELECT fila FROM tabla", con);

            adapter.Fill(subjects);

            GridViewTable.DataSource = subjects;
            GridViewTable.DataBind();

then as they are generated in automatic according to the number of rows that the table has in sql I do not control which is the checkbox that I select