gridview中后台获取某列的值

下面的gridview中，获取某行某列的值（非模板页），如图所示

   <asp:GridView AutoGenerateColumns="false" CssClass="table table-striped table-bordered table-hover" ID="GridView1" runat="server">
                            <Columns>
                                <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:CheckBox ID="chkSelect" runat="server" />
                                        <asp:TextBox ID="hidPercent" runat="server" Text='<%#GetPercent(Eval("name").ToString(),Eval("StuCount").ToString(),Eval("ContractName").ToString(),1) %>' Visible="false" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="name" HeaderText="代理名称" ReadOnly="true" />
                                <asp:BoundField  DataField="ContractName" HeaderText="合同名称" ReadOnly="true" />
                                <asp:HyperLinkField DataNavigateUrlFields="name,ContractName,ReturnCommissionCurrency,IsState" DataNavigateUrlFormatString="AgentStuDetailSP.aspx?a=1&aName={0}&cName={1}&ucc={2}&isstate={3}" HeaderText="签约人数" DataTextField="StuCount" />
                                <asp:TemplateField HeaderText="签约总人数">
                                    <ItemTemplate>
                                        <a href='<%#"AgentStuDetailSP.aspx?a=2&aName="+Eval("name")+"&cName"+Eval("ContractName")+"&ucc="+Eval("ReturnCommissionCurrency")+"&isstate="+ Eval("IsState") %>'>
                    <%#GetPercent(Eval("name").ToString(),Eval("StuCount").ToString(),Eval("ContractName").ToString(),) %></a>
                                    </ItemTemplate>

                                </asp:TemplateField>
                                <asp:BoundField DataField="ReturnCommissionCurrency" HeaderText="币种" ReadOnly="true" />
                                <asp:BoundField DataField="sumMoney" HeaderText="返佣总额" ReadOnly="true" />
                                <asp:TemplateField  HeaderText="返佣百分比">
                                    <ItemTemplate>
                                        <%#GetPercent(Eval("name").ToString(),Eval("StuCount").ToString(),Eval("ContractName").ToString(),) %>%
                                    </ItemTemplate>

                                </asp:TemplateField>

                                <asp:TemplateField HeaderText="应返代理金额">
                                    <ItemTemplate>
                                        <%#(GetPercent(Eval("name").ToString(),Eval("StuCount").ToString(),Eval("ContractName").ToString(),)/ *decimal.Parse( Eval("sumMoney").ToString()==null?"":Eval("sumMoney").ToString() ))%>
                                    </ItemTemplate>
                                </asp:TemplateField>

                                <asp:TemplateField HeaderText="返佣状态">
                                    <ItemTemplate>
                                        <%#GetIsState(Eval("IsState").ToString())%>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:LinkButton runat="server"></asp:LinkButton>
                                    </ItemTemplate>
                                </asp:TemplateField>
                            </Columns>
                        </asp:GridView>

选择所需的列，点击更新状态。。更改选中列状态，后台方法为

   protected void btnUpdate_Click(object sender, EventArgs e)
        {
            // 遍历GridView中的每一行
            for (int i = ; i < GridView1.Rows.Count; i++)
            {
                CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("chkSelect");
                string temp = GridView1.Rows[i].Cells[].Text;
                if (cbox.Checked == true)
                {
                    // 获行当前行
                    GridViewRow gridRow = GridView1.Rows[i];
                    // 通过DATAKEYS来取行没显示出来的ID号
                    string agentName = GridView1.DataKeys[i].Value.ToString();
                    string conName = gridRow.Cells[].Text.Trim();
                    if (conName == "&nbsp;")
                    {
                        conName = "";
                    }
                    string ReturnCC = gridRow.Cells[].Text.Trim();//获取到的选中列的对应行的值
                    string isState = gridRow.Cells[].Text.Trim();
                    //GetDataS(1, agentName, conName, ReturnCC, isState, "");
                }
            }
            GetData();
        }