以下这段是将GirdView的数据导出到Excel的代码，，在网上查到的。初学，不知道前后应如何补充使其完整，，求高手帮我补充一下。
 this.GridView1.DataBind();

    Excel.ApplicationClass oExcel = new Excel.ApplicationClass();
   object oMissing  = System.Reflection.Missing.Value;
            
   oExcel.Workbooks.Add(oMissing);
   Excel.Workbook oBook = oExcel.Workbooks[1];
   Excel.Worksheet oSheet = (Excel.Worksheet)oBook.Sheets[1];
   oSheet.Name = this.Title;
           
   Excel.Range rg;

   for (int j = 0; j < this.GridView1.HeaderRow.Cells.Count; j++)
  {
      rg = ((Excel.Range)oSheet.Cells[ 1, j + 1]);
      rg.FormulaR1C1 = this.GridView1.HeaderRow.Cells[j].Text;
    }

    for(int i = 0;i<this.GridView1.Rows.Count;i++)
  {
      for (int j = 0; j < this.GridView1.Rows[0].Cells.Count; j++)
    {
       rg = ((Excel.Range)oSheet.Cells[i + 2, j+1]);
       rg.FormulaR1C1 = this.GridView1.Rows[i].Cells[j].Text;
      }
    }
    rg = null;

    string VirFileName = Guid.NewGuid().ToString() + ".xls";
    oBook.SaveAs(Server.MapPath(VirFileName), Excel.XlFileFormat.xlExcel9795, oMissing, oMissing, oMissing, oMissing, Excel.XlSaveAsAccessMode.xlExclusive,
    oMissing, oMissing, oMissing, oMissing, oMissing);
    oExcel.Workbooks.Close();
    oExcel.Quit();
           
    oSheet = null;
    oBook = null;
    oExcel = null;

     GC.Collect();

     Response.Redirect(VirFileName);