Aspose.Cells 使用整理：读取Excel文件里的数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data.OleDb;
using Aspose.Cells;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        /// <summary>
        /// 默认构造函数.<br></br>
        /// 2009-04-13 YJ 定义函数.<br></br>
        /// </summary>
        public Form1()
        {
            InitializeComponent();

            //此处的students.xls文件在工程下Bin的程序集目录下
            string opnFileName = Application.StartupPath.Trim() + "\\students.xls";

            if(!string.IsNullOrEmpty(opnFileName))
            {
                Workbook tcWorkBook = new Workbook();
                tcWorkBook.Open(opnFileName);
                Worksheets tcWorkSheets = tcWorkBook.Worksheets;
                Worksheet tcWorkSheet;
                Cells tcCells;
                //索引行号
                //int tcRow = 0;
                //索引列号
                //int tcColumn = 0;
                Range tcRange;
                string sExcelValue = "";
                Cell tcCell;

                for (int i = 0; i < tcWorkSheets.Count; i++)
                {
                    tcWorkSheet = tcWorkSheets[i];
                    tcCells = tcWorkSheet.Cells;
                    //以索引的方式遍历工作表
                    //tcCell = tcCells[tcRow, tcColumn];
                    tcCell = tcCells["a2"];
                    string tcSheetName = tcWorkSheets[i].Name;

                    try
                    {
                        // sExcelValue = tcCell.Value.ToString();

                        sExcelValue = tcCell.StringValue;    //可以获取空值
                        MessageBox.Show("工作表 \"" + tcSheetName + "\" a2的数据：" + sExcelValue);
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("工作表 \"" + tcSheetName + "\" a2单元格不存在或者已经被合并：" + ex.Message);
                    }

                    if (tcCell.IsMerged)
                    {
                        tcRange = tcCell.GetMergedRange();
                        MessageBox.Show("工作表 \"" + tcSheetName + "\" a2单元格合并了 " + tcRange.RowCount.ToString() + " 行。");
                        MessageBox.Show("工作表 \"" + tcSheetName + "\" a2单元格合并了 " + tcRange.ColumnCount.ToString() + " 列。");
                    }
                    else
                    {
                        MessageBox.Show("工作表 \"" + tcSheetName + "\" a2单元格没有被合并。");
                    }
                }
            }
        }
    }
}