低级错误啊，浪费了那么长时间，对对象没有深刻理解

代码1：正确
  public void TimerReloadStores(int currentPage, int pageCount)
        {
            DataTable storeParm = bo.GetStoreParamSqlServer(currentPage, pageCount, "1", pageTotal);
            //如果只有一页数据
            if (currentPage == 1)
            {
                storeLogoSecond1.Visible = false;
                storeLogo1.Visible = true;
                StoreLogo sLogo = this.pnlParent.Controls["storeLogo" + 1] as StoreLogo;
                Panel pnlContainer = sLogo.Controls["pnlParent"] as Panel;
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
                        //string storeID = "";
                        //string OnlineStatus = "";
                        //string ipaddress = "";
                        //int nport = 1433;
                        //bool bOK_1 = false;
                        //DataTable allStore = bo.GetAllEnabledStore();
                        //Panel pnl = this.pnl_queue.Controls["pnl_q" + i] as Panel;
                        //Panel pnl_offline = pnl.Controls["pnl_offline" + i] as Panel;
                        //QueueStore qs = pnl.Controls["queueStore" + i] as QueueStore;

                        //storeID = qs.StoreID;
                        //if (string.IsNullOrEmpty(storeID))
                        //    continue;
                        //OnlineStatus = qs.OnlineStatus;
                        int index = i + 1;
                        Panel pnl = pnlContainer.Controls["panel" + index] as Panel;
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        pnl.BackgroundImage = Image.FromFile(strStoreLogo);
                        pnl.BackgroundImageLayout = ImageLayout.Stretch;
                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
             //如果大于一页数据
            if (currentPage != 1)
            {
                storeLogo1.Visible = false;
                storeLogoSecond1.Visible = true;
                StoreLogoSecond sLogo = this.pnlParent.Controls["storeLogoSecond" + 1] as StoreLogoSecond;
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
                        int index = i + 1;
                        Panel pnl = sLogo.Controls["panel" + index] as Panel;
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        pnl.BackgroundImage = Image.FromFile(strStoreLogo);
                        pnl.BackgroundImageLayout = ImageLayout.Stretch;
                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
        }

代码2： 错误，浪费很长时间
 public void TimerReloadStores(int currentPage, int pageCount)
        {
            DataTable storeParm = bo.GetStoreParamSqlServer(currentPage, pageCount, "1", pageTotal);
            //如果只有一页数据
            if (currentPage == 1)
            {
                storeLogoSecond1.Visible = false;
                storeLogo1.Visible = true;
               
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
                       StoreLogo sLogo = this.pnlParent.Controls["storeLogo" + 1] as StoreLogo;
                Panel pnlContainer = sLogo.Controls["pnlParent"] as Panel;
                        int index = i + 1;
                        Panel pnl = pnlContainer.Controls["panel" + index] as Panel;
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        pnl.BackgroundImage = Image.FromFile(strStoreLogo);
                        pnl.BackgroundImageLayout = ImageLayout.Stretch;
                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
             //如果大于一页数据
            if (currentPage != 1)
            {
                storeLogo1.Visible = false;
                storeLogoSecond1.Visible = true;
                
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
StoreLogoSecond sLogo = this.pnlParent.Controls["storeLogoSecond" + 1] as StoreLogoSecond;
                        int index = i + 1;
                        Panel pnl = sLogo.Controls["panel" + index] as Panel;
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        pnl.BackgroundImage = Image.FromFile(strStoreLogo);
                        pnl.BackgroundImageLayout = ImageLayout.Stretch;
                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
        }

代码3：最笨
public void ReloadStores(int currentPage, int pageCount)
        {
            DataTable storeParm = bo.GetStoreParamSqlServer(currentPage, pageCount, "1", pageTotal);
            //如果只有一页数据
            if (currentPage == 1)
            {
                storeLogoSecond1.Visible = false;
                storeLogo1.Visible = true;
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
                        string storeID = storeParm.Rows[i]["STORE_ID"].ToString();
                        string onlineStatus = storeParm.Rows[i]["ONLINE_STATUS"].ToString();
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        if (i == 0)
                        {
                            storeLogo1.panel1.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel1.Enabled = true;
                                storeLogo1.myOpaqueLayer1.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel1.Enabled = false;
                                storeLogo1.myOpaqueLayer1.Visible = true;
                            }
                        }
                        if (i == 1)
                        {
                            storeLogo1.panel2.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel2.Enabled = true;
                                storeLogo1.myOpaqueLayer2.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel2.Enabled = false;
                                storeLogo1.myOpaqueLayer2.Visible = true;
                            }
                        }
                        if (i == 2)
                        {
                            storeLogo1.panel3.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel3.Enabled = true;
                                storeLogo1.myOpaqueLayer3.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel3.Enabled = false;
                                storeLogo1.myOpaqueLayer3.Visible = true;
                            }
                        }
                        if (i == 3)
                        {
                            storeLogo1.panel4.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel4.Enabled = true;
                                storeLogo1.myOpaqueLayer4.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel4.Enabled = false;
                                storeLogo1.myOpaqueLayer4.Visible = true;
                            }
                        }
                        if (i == 4)
                        {
                            storeLogo1.panel5.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel5.Enabled = true;
                                storeLogo1.myOpaqueLayer5.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel5.Enabled = false;
                                storeLogo1.myOpaqueLayer5.Visible = true;
                            }
                        }
                        if (i == 5)
                        {
                            storeLogo1.panel6.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogo1.panel6.Enabled = true;
                                storeLogo1.myOpaqueLayer6.Visible = false;
                            }
                            else
                            {
                                storeLogo1.panel6.Enabled = false;
                                storeLogo1.myOpaqueLayer6.Visible = true;
                            }
                        }

                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
            //如果大于一页数据
            if (currentPage != 1)
            {
                storeLogo1.Visible = false;
                storeLogoSecond1.Visible = true;
                for (int i = 0; i < pageCount; i++)
                {
                    try
                    {
                        string storeID = storeParm.Rows[i]["STORE_ID"].ToString();
                        string onlineStatus = storeParm.Rows[i]["ONLINE_STATUS"].ToString();
                        string strStoreLogo = Application.StartupPath + "/Resources/store_default.png";
                        string filepath = storeParm.Rows[i]["FILE_PATH"].ToString().Replace("~", "");
                        string filename = storeParm.Rows[i]["FILE_NAME"].ToString();
                        if (!string.IsNullOrEmpty(filepath) && !string.IsNullOrEmpty(filename))
                        {
                            filepath = Application.StartupPath + "/" + filepath + "/" + filename;

                            if (File.Exists(filepath))
                            {
                                strStoreLogo = filepath;
                            }
                        }
                        if (i == 0)
                        {
                            storeLogoSecond1.panel1.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel1.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer1.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel1.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer1.Visible = true;
                            }
                        }
                        if (i == 1)
                        {
                            storeLogoSecond1.panel2.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel2.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer2.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel2.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer2.Visible = true;
                            }
                        }
                        if (i == 2)
                        {
                            storeLogoSecond1.panel3.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel3.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer3.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel3.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer3.Visible = true;
                            }
                        }
                        if (i == 3)
                        {
                            storeLogoSecond1.panel4.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel4.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer4.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel4.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer4.Visible = true;
                            }
                        }
                        if (i == 4)
                        {
                            storeLogoSecond1.panel5.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel5.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer5.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel5.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer5.Visible = true;
                            }
                        }
                        if (i == 5)
                        {
                            storeLogoSecond1.panel6.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel6.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer6.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel6.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer6.Visible = true;
                            }
                        }
                        if (i == 6)
                        {
                            storeLogoSecond1.panel7.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel7.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer7.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel7.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer7.Visible = true;
                            }
                        }
                        if (i == 7)
                        {
                            storeLogoSecond1.panel8.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel8.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer8.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel8.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer8.Visible = true;
                            }
                        }
                        if (i == 8)
                        {
                            storeLogoSecond1.panel9.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel9.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer9.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel9.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer9.Visible = true;
                            }
                        }
                        if (i == 9)
                        {
                            storeLogoSecond1.panel10.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel10.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer10.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel10.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer10.Visible = true;
                            }
                        }
                        if (i == 10)
                        {
                            storeLogoSecond1.panel11.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel11.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer11.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel11.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer11.Visible = true;
                            }
                        }
                        if (i == 11)
                        {
                            storeLogoSecond1.panel12.BackgroundImage = Image.FromFile(strStoreLogo);
                            if (onlineStatus == "0")
                            {
                                storeLogoSecond1.panel12.Enabled = true;
                                storeLogoSecond1.myOpaqueLayer12.Visible = false;
                            }
                            else
                            {
                                storeLogoSecond1.panel12.Enabled = false;
                                storeLogoSecond1.myOpaqueLayer12.Visible = true;
                            }
                        }
                    }
                    catch (Exception errs)
                    {
                        LogCommon.WriteLogInfo(errs.ToString());
                    }
                }
            }
        }