C# npoi 从excel导入datagridviews 批量联网核查

             DataSet ds = new DataSet();
             OpenFileDialog openFileDialog = new OpenFileDialog();
             openFileDialog.Filter = "Excel 2003 *.xls |*.xls";
             openFileDialog.ShowDialog();

             if (openFileDialog.FileNames.Length == )
             {
                 MessageBox.Show("请选择文件", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                 return;
             }

             using (FileStream file = new FileStream(openFileDialog.FileName, FileMode.Open, FileAccess.Read))    //using里面为打开该文件后自动释放
             {
                 HSSFWorkbook hSSFWorkbook = new HSSFWorkbook(file);
                 dataGridView1.Rows.Clear();

                 DataTable data = new DataTable();
                 data.Rows.Clear();
                 data.Columns.Add("姓名", typeof(String));

                 data.Columns.Add("身份证号", typeof(String));

                 try
                 {

                    for (int i = ; i <= hSSFWorkbook.GetSheetAt().LastRowNum-; i++)
                    {

                       if (!string.IsNullOrEmpty(hSSFWorkbook.GetSheetAt().GetRow(i + ).GetCell().StringCellValue))   //判断是否为空格或空值，不导入为空值的excel行
                       {
                         data.Rows.Add(hSSFWorkbook.GetSheetAt().GetRow(i + ).GetCell(), hSSFWorkbook.GetSheetAt().GetRow(i + ).GetCell());   //导入excel
                       }

                     }
                 }
                 catch (Exception ea)
                 {
                     MessageBox.Show("excel表格数据有误，请检查excel表格再试"+"\n\n"+ea);
                     return;
                 }

                 this.dataGridView1.DataSource = data;

                 dataGridView1.AllowUserToAddRows = false;

             }
             for (int i = ; i < dataGridView1.Rows.Count; i++)     //给行标题标数量
             {
                 dataGridView1.Rows[i].HeaderCell.Value = (i + ).ToString();

             }