请问在设计器中设置了页脚保存进Spread中没有了页脚，怎么处理？

Richard.Ma

请问在设计器中设置了页脚保存进Spread中没有了页脚，怎么处理？
附件中有我录的视频。可以反应出页脚在Spread中打印预览时没有的问题。
附件中也有我通过设计器导出的XML文件，该XML文件有页脚。但是通过  Spread_RecdCertif.Open(fleDialog.FileName);方法导入之后，也没有了页脚。
我打印预览的代码出下。
      private void btnPrintPreview_Click(object sender, EventArgs e)
      {
         FarPoint.Win.Spread.FpSpread Spread_Excel = Spread_RecdCertif;
         Print(Spread_Excel.ActiveSheet, true, "", "");
      }
      public void Print(FarPoint.Win.Spread.SheetView Spread_Excel, bool Preview, string FileName, string PrintName)
      {
         FarPoint.Win.Spread.PrintInfo printset = new FarPoint.Win.Spread.PrintInfo();
         printset.ShowBorder = false;//是否要打印在整个控件周围的外框边界。
         printset.ShowGrid = false;//该值指示是否打印网格线
         printset.ShowRowHeaders = false;//获取或设置是否打印行头
         printset.ShowColumnHeaders = false;//获取或设置是否打印列头
         printset.Centering = FarPoint.Win.Spread.Centering.Horizontal;//该值指示打印输出时的居中显示方式
         printset.JobName = FileName;
         printset.ShowPrintDialog = false;//是否显示打印机选择窗口
         printset.ShowColor = false;
         printset.Preview = Preview;//是否预览

         if (PrintName != "")
            printset.Printer = PrintName;//打印机名称
         Spread_Excel.PrintInfo = printset;
         Spread_RecdCertif.PrintSheet(Spread_Excel);
      }

我调用设计器的代码如下：
      private void btnDesigner_Click(object sender, EventArgs e)
      {
         FarPoint.Win.Spread.FpSpread Spread_Excel = Spread_RecdCertif;
         fpSpreadDesigner.ShowDialog(Spread_Excel);
         SetRowColWH();
      }

      private void SetRowColWH()
      {
         for (int s = 0; s< Spread_RecdCertif.Sheets.Count; s++)
         {
            for (int i = 0; i < Spread_RecdCertif.Sheets[s].RowCount; i++)
            {
                  Spread_RecdCertif.Sheets[s].Rows[i].Height = 20;
            }
            for (int j = 0; j < Spread_RecdCertif.Sheets[s].ColumnCount; j++)
            {
                  Spread_RecdCertif.Sheets[s].Columns[j].Width = 20;
            }
            Spread_RecdCertif.Sheets[s].Columns[0, Spread_RecdCertif.Sheets[s].ColumnCount - 1].Resizable = false;//禁止调整列宽
            Spread_RecdCertif.Sheets[s].Rows[0, Spread_RecdCertif.Sheets[s].RowCount - 1].Resizable = false;//禁止调整行高
         }
      }