public static void SaveAs(DataGridView gridView)
        {
            //导出到execl   
            try
            {
                SaveFileDialog saveFileDialog = new SaveFileDialog();
                saveFileDialog.Filter = "导出Excel (*.xls)|*.xls";
                saveFileDialog.FilterIndex = 0;
                saveFileDialog.RestoreDirectory = true;
                //saveFileDialog.CreatePrompt = true;
                saveFileDialog.Title = "导出Excel格式文档";
                saveFileDialog.ShowDialog();
                string strName = saveFileDialog.FileName;
                if (strName.Length != 0)
                {
                    //toolStripProgressBar1.Visible = true;
                    //以下变量什么意思？
                    System.Reflection.Missing miss = System.Reflection.Missing.Value;
                    Microsoft.Office.Interop.Excel.ApplicationClass excel = new Microsoft.Office.Interop.Excel.ApplicationClass();

                    excel.Application.Workbooks.Add(true);

                    excel.Visible = false;//若是true，则在导出的时候会显示EXcel界面
                    //excel.Visible = true;

                    if (excel == null)
                    {
                        MessageBox.Show("EXCEL无法启动！(可能您没有安装EXCEL，或者版本与本程序不符)","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
                        return;
                    }

                    Microsoft.Office.Interop.Excel.Workbooks books = (Microsoft.Office.Interop.Excel.Workbooks)excel.Workbooks;
                    Microsoft.Office.Interop.Excel.Workbook book = (Microsoft.Office.Interop.Excel.Workbook)(books.Add(miss));
                    Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)book.ActiveSheet;
                    sheet.Name = "数据";

                    //int m = 0, n = 0;
                    //添加表头
                    for (int i = 0; i < gridView.ColumnCount; i++)
                    {
                        excel.Cells[1, i+1] = gridView.Columns[i].HeaderText.ToString();
                    }

                    //填充数据
                    for (int i = 0; i < gridView.RowCount; i++)
                    {
                        //i为行，j为列
                        for (int j = 0; j < gridView.ColumnCount; j++)
                        {
                            ////注意：datagrid的引用方法是 datagrid1[列，行],即先列后行
                            if (gridView[j, i].Value.GetType() == typeof(string))
                            {
                                //MessageBox.Show(gridView[j, i].Value.ToString());
                                excel.Cells[i + 2, j + 1] = "'" + gridView[j, i].Value.ToString();
                            }
                            else
                            {
                                excel.Cells[i + 2, j + 1] = gridView[j, i].Value.ToString();
                            }
                        }
                        //toolStripProgressBar1.Value += 100 / gridView.RowCount;
                    }

                    sheet.SaveAs(strName, miss, miss, miss, miss, miss, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, miss, miss, miss);
                    //book.Close(false, miss, miss);
                    //books.Close();
                    //excel.Quit();
                    //System.Runtime.InteropServices.Marshal.ReleaseComObject(sheet);
                    //System.Runtime.InteropServices.Marshal.ReleaseComObject(book);
                    //System.Runtime.InteropServices.