How to update sql with gridview from button not in gridview

I have a gridview with some checkboxes and i want to update individual rows in sql database from a button that is not part of the gridview.. below is the gridview and c# code behide for the button clcik event. I can get the data from the gridview for updating but I don't know how to do the actual database update.

               <asp:GridView ID="GridViewScheduleEditWinners" runat="server"
                AutoGenerateColumns="False" CaptionAlign="Bottom"
                DataSourceID="SqlDataSource1" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None"
                BorderWidth="1px" CellPadding="4" EmptyDataText="Data is Not Available" ForeColor="Black"
                GridLines="Vertical" AllowPaging="True"
                onrowdatabound="GridView1_RowDataBound" Font-Size="Small"
                DataKeyNames="Team1Id,Team2Id,ScheduleId">
                <RowStyle BackColor="#F7F7DE" />
                <Columns>
                     <asp:BoundField DataField="Team1Id" HeaderText="Team1Id"
                         ShowHeader="False" SortExpression="Team1Id" Visible="False" />
                     <asp:BoundField DataField="Team2Id" HeaderText="Team2Id"
                         SortExpression="Team2Id" ShowHeader="False" Visible="False" />
                     <asp:BoundField DataField="date" HeaderText="Date" SortExpression="date"
                        DataFormatString="{0:MMMM dd}" />
                               
               
                    <asp:BoundField DataField="date" HeaderText="Time" SortExpression="date"
                        DataFormatString="{0:h:mm tt}" />
                    <asp:BoundField DataField="Name" HeaderText="Field" SortExpression="Name" />
                    <asp:BoundField DataField="Team1Name" HeaderText="Team1Name"
                         SortExpression="Team1Name" />
                     <asp:TemplateField HeaderText="Won">
                         <ItemTemplate>
                             <asp:CheckBox ID="Team1Won" runat="server" />
                         </ItemTemplate>
                     </asp:TemplateField>
                     <asp:BoundField DataField="Team2Name" SortExpression="Team2Name"
                         HeaderText="Team2Name" />
                     <asp:TemplateField HeaderText="Won">
                         <ItemTemplate>
                             <asp:CheckBox ID="Team2Won" runat="server" />
                         </ItemTemplate>
                     </asp:TemplateField>
                </Columns>
                <FooterStyle BackColor="#CCCC99" />
                <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" />
                <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" />
                <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" />
                <AlternatingRowStyle BackColor="White" />
            </asp:GridView>

            <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:CISoftballConnectionString %>"
             
                SelectCommand="SELECT Leagues.Year, Leagues.LeagueId, ScheduleWeekTimeField.date, Fields.FieldId, Fields.Name, Teams.TeamName AS Team1Name, Teams_1.TeamName AS Team2Name, ScheduleTeams.Team1Id, ScheduleTeams.Team2Id, ScheduleTeams.ScheduleId FROM Leagues INNER JOIN ScheduleWeekTimeField ON Leagues.Year = ScheduleWeekTimeField.year AND Leagues.LeagueId = ScheduleWeekTimeField.LeagueId INNER JOIN Fields ON ScheduleWeekTimeField.fieldId = Fields.FieldId INNER JOIN ScheduleTeams ON ScheduleWeekTimeField.ScheduleId = ScheduleTeams.ScheduleId INNER JOIN Teams ON Leagues.Year = Teams.Year AND Leagues.LeagueId = Teams.LeagueId AND ScheduleTeams.Team1Id = Teams.TeamNumber INNER JOIN Teams AS Teams_1 ON Leagues.Year = Teams_1.Year AND Leagues.LeagueId = Teams_1.LeagueId AND ScheduleTeams.Team2Id = Teams_1.TeamNumber WHERE (Leagues.Year = '2011') AND (Leagues.LeagueId = @LId) AND (ScheduleWeekTimeField.week &gt;= @wk) ORDER BY ScheduleWeekTimeField.date, Fields.FieldId DESC"

                UpdateCommand="UPDATE ScheduleTeams SET ScheduleId =, TeamIdWon = @TeamWonId, TeamIdLost = @TeamLostId WHERE (ScheduleId = @ScheduleId)">
                <SelectParameters>
                    <asp:ControlParameter ControlID="DropDownList1" DefaultValue="1" Name="LId"
                        PropertyName="SelectedValue" />
                    <asp:ControlParameter ControlID="DropDownList2" DefaultValue="1" Name="wk"
                        PropertyName="SelectedValue" />
                </SelectParameters>
               
                <UpdateParameters>
                    <asp:Parameter Name="TeamWonId" />
                    <asp:Parameter Name="TeamLostId" />
                    <asp:Parameter Name="ScheduleId" />
                </UpdateParameters>
               
            </asp:SqlDataSource>



 protected void ButtonUpdateWins_Click(object sender, EventArgs e)
    {
        CheckBox cb;
        string ScheduleId;
        string Team1WonId;
        string Team2LostId;
        Boolean gotacheck = false;
        // Iterate through the Products.Rows property
        foreach (GridViewRow row in GridViewScheduleEditWinners.Rows)
        {
            // Access the CheckBoxs
            cb = (CheckBox)row.FindControl("Team1Won");
           
            if (cb != null && cb.Checked)
            {
                gotacheck = true;
                Team1WonId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[0].ToString();
                Team2LostId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[1].ToString();
                ScheduleId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[2].ToString();
            }

            cb = (CheckBox)row.FindControl("Team2Won");

            if (cb != null && cb.Checked)
            {
                gotacheck = true;
                Team1WonId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[1].ToString();
                Team2LostId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[0].ToString();
                ScheduleId = GridViewScheduleEditWinners.DataKeys[row.RowIndex].Values[2].ToString();
            }

What do i do here to update the database?
       }