循环判绝后添加数据出现丢失情况，盼帮忙

private void AddUserWork(int id)
        {
            if (string.IsNullOrEmpty(txtcompany1.Text))
            {
                action = 1;
            }
            try
            {
                for (int i = 1; i < 11; i++)
                {
                    string companyid = "txtcompany" + i.ToString();
                    string caddressid = "txtcaddress" + i.ToString();
                    string positionid = "txtposition" + i.ToString();
                    string salarid = "txtsalar" + i.ToString();
                    string prizeid = "txtprize" + i.ToString();
                    string contactid = "txtcontact" + i.ToString();
                    string ctelid = "txtctel" + i.ToString();
                    string causeid = "txtcause" + i.ToString();
                    string enteryearid = "ddlenteryear" + i.ToString();
                    string entermonthid = "ddlentermonth" + i.ToString();
                    string leaveyearid = "ddlleaveyear" + i.ToString();
                    string leavemonthid = "dllleavemonth" + i.ToString();

                    TextBox txtcompany = (TextBox)Panel3.FindControl(companyid);
                    TextBox txtcaddress = (TextBox)Panel3.FindControl(caddressid);
                    TextBox txtposition = (TextBox)Panel3.FindControl(positionid);
                    TextBox txtsalar = (TextBox)Panel3.FindControl(salarid);
                    TextBox txtprize = (TextBox)Panel3.FindControl(prizeid);
                    TextBox txtcontact = (TextBox)Panel3.FindControl(contactid);
                    TextBox txtctel = (TextBox)Panel3.FindControl(ctelid);
                    TextBox txtcause = (TextBox)Panel3.FindControl(causeid);
                    DropDownList ddlenteryear = (DropDownList)Panel3.FindControl(enteryearid);
                    DropDownList ddlentermonth = (DropDownList)Panel3.FindControl(entermonthid);
                    DropDownList ddlleaveyear = (DropDownList)Panel3.FindControl(leaveyearid);
                    DropDownList dllleavemonth = (DropDownList)Panel3.FindControl(leavemonthid);

                    if (!string.IsNullOrEmpty(txtcompany.Text))
                    {
                        string edudate = "";
                        string graduate = "";
                        edudate = ddlenteryear.SelectedValue + "-" + ddlentermonth.SelectedValue + "-01";
                        graduate = ddlleaveyear.SelectedValue + "-" + dllleavemonth.SelectedValue + "-01";

                        if (!UserInfoDB.AddUserWork(id, txtcompany.Text, txtcaddress.Text, txtposition.Text, Convert.ToDateTime(edudate), Convert.ToDateTime(graduate), txtsalar.Text, txtcause.Text, txtcontact.Text, txtctel.Text, txtprize.Text))
                        {
                            action = 1;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                string error = ex.Message;
            }
        }