基于NPOI的excel文件读取代码,CSharp代码库,德仔网

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【CSharp】基于NPOI的excel文件读取

作者: / 发布于2014/10/21/ 837


	using NPOI.HPSF;
	using NPOI.SS.UserModel;
	using NPOI.HSSF.UserModel;
	
	
	namespace RExcelLib
	{
	
	 public class ExcelHleper
	 {
	 /*
	 将Excel中的内容当作纯数据读取，无表说明
	 */
	 static public DataTable ReadAsPureData(string fileName,int feetPage)
	 {
	 ISheet sheet;
	 sheet = GetSheet(fileName, feetPage);
	
	 System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
	
	 using( DataTable dataTable = new DataTable())
	 {
	 for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++)
	 {
	 dataTable.Columns.Add("A" + j.ToString());
	 }
	 while (rows.MoveNext())
	 {
	 HSSFRow row = (HSSFRow)rows.Current;
	 DataRow dr = dataTable.NewRow();
	 for (int i = 0; i < row.LastCellNum; i++)
	 {
	 var cell = row.GetCell(i);
	 if (cell == null)
	 {
	 dr[i] = null;
	 }
	 else
	 {
	 dr[i] = cell.ToString();
	 }
	 }
	 dataTable.Rows.Add(dr);
	 }
	 return dataTable;
	 }
	 }
	
	
	 static public DataTable ReadDataFirsLineAsHead(string fileName, int feetPage,bool isAbandonHead = true)
	 {
	 ISheet sheet;
	 sheet = GetSheet(fileName, feetPage);
	
	 System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
	
	 using (DataTable dataTable = new DataTable())
	 {
	 var headRow = sheet.GetRow(0);
	 for (int j = 0; j < headRow.LastCellNum; j++)
	 {
	 var headName = headRow.Cells.ElementAt(j);
	 dataTable.Columns.Add(headName.ToString());
	 }
	
	 if (isAbandonHead)
	 {
	 rows.MoveNext();
	
	 }
	
	 while (rows.MoveNext())
	 {
	 HSSFRow row = (HSSFRow)rows.Current;
	 DataRow dr = dataTable.NewRow();
	
	 for (int i = 0; i < row.LastCellNum; i++)
	 {
	 var cell = row.GetCell(i);
	 if (cell == null)
	 {
	 dr[i] = null;
	 }
	 else
	 {
	 dr[i] = cell.ToString();
	 }
	 }
	 dataTable.Rows.Add(dr);
	 }
	 return dataTable;
	 }
	 }
	
	
	 private static ISheet GetSheet(string fileName, int feetPage)
	 {
	 ISheet sheet;
	 try
	 {
	 using (FileStream fs = File.OpenRead(fileName))
	 {
	 var wk = new HSSFWorkbook(fs);
	 sheet = wk.GetSheetAt(feetPage);
	 }
	 }
	 catch (Exception e)
	 {
	 throw e;
	 }
	 return sheet;
	 }
	
	
	
	 }
	}

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