using System;
using System.Collections.Generic;
using System.Text;

using NPOI.HPSF;
using NPOI.HSSF.UserModel;
using NPOI.HSSF.Record;
using System.IO;
using NPOI.SS.Util;
using NPOI.SS.UserModel;

namespace Stone.Common
{
    public class MyExcel
    {
        public HSSFWorkbook hssfworkbook = null;
        public string filename = null;
        public HSSFSheet sheet = null;

        public MyExcel()
        {
            
        }

        /// <summary>
        /// 新建一个Excel文件
        /// </summary>
        /// <param name="_filename">要新建的Excel文件路径</param>
        public void NewExcel(string _filename)
        {
            filename = _filename;
            hssfworkbook = new HSSFWorkbook();
        }

        /// <summary>
        /// 打开一个Excel文件
        /// </summary>
        /// <param name="_filename">要打开的Excel文件路径</param>
        public void OpenExcel(string _filename)
        {
            filename = _filename;
            FileStream file = new FileStream(filename, FileMode.Open, FileAccess.Read);
            hssfworkbook = new HSSFWorkbook(file);
        }

        /// <summary>
        /// 新建一个工作表
        /// </summary>
        /// <param name="sheetname"></param>
        public void NewSheet(string sheetname)
        {
            sheet = (HSSFSheet)hssfworkbook.CreateSheet(sheetname);
        }

        /// <summary>
        /// 打开一个工作表
        /// </summary>
        /// <param name="sheetname"></param>
        public void OpenSheet(string sheetname)
        {
            sheet = (HSSFSheet)hssfworkbook.GetSheet(sheetname);
        }

        /// <summary>
        /// 创建一行
        /// </summary>
        /// <param name="rowindex"></param>
        public void CreateRow(int rowindex)
        {
            sheet.CreateRow(rowindex);
        }

        /// <summary>
        /// 创建一单元格
        /// </summary>
        /// <param name="rowindex"></param>
        /// <param name="colindex"></param>
        public void CreateCell(int rowindex, int colindex)
        {
            sheet.GetRow(rowindex).CreateCell(colindex);
        }

        /// <summary>
        /// 设置单元格的值
        /// </summary>
        /// <param name="rowindex"></param>
        /// <param name="colindex"></param>
        /// <param name="value"></param>
        public void SetCellValue(int rowindex, int colindex, string value)
        {
            sheet.GetRow(rowindex).GetCell(colindex).SetCellValue(value);
        }

        /// <summary>
        /// 保存Excel文件
        /// </summary>
        public void Save()
        {
            FileStream file = new FileStream(filename, FileMode.Create);
            hssfworkbook.Write(file);

            file.Close();
        }

    }
}