string filePath = "";
            if (saveFileDialog1.ShowDialog() != DialogResult.OK)
            {
                return;                
            }
            filePath = saveFileDialog1.FileName;
            Microsoft.Office.Interop.Excel.Application app =
                 new Microsoft.Office.Interop.Excel.ApplicationClass();
            try
            {
                app.Visible = false;
                Workbook wBook = app.Workbooks.Add(true);
                Worksheet wSheet = wBook.Worksheets[1] as Worksheet;
                if (inventList.Count>0)
                {
                    int row = 0;
                    row = inventList.Count;                    
                    for (int i = 0; i < row; i++)
                    {
                        wSheet.Cells[i+2, 1] = inventList[i].PartNo;
                       
                    }                    
                    wSheet.Cells[1, 1] = "产品编号";
                                   }
                //设置禁止弹出保存和覆盖的询问提示框   
                app.DisplayAlerts = false;
                app.AlertBeforeOverwriting = false;
                //app.Workbooks[1].Close(true, filePath, null);
                app.Workbooks[1].Save();
                app.Save(filePath);
                app.SaveWorkspace(filePath);
         
                app.Quit();
                app = null;
                               
                MessageBox.Show("数据导出成功！","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
            catch (Exception ex)
            {
                MessageBox.Show("导出数据时出现错误！","错误",MessageBoxButtons.OK,MessageBoxIcon.Error);
            }