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【CSharp】 CSV文件操作

作者:niuniu / 发布于2014/8/10/ 653

这个C#类用于转换DataTable为CSV文件、CSV文件转换成DataTable，如果需要进行CSV和DataTable之间进行转换，使用这个类非常合适。


	using System.Data;
	using System.IO;
	
	namespace DotNet.Utilities
	{
	 /// <summary>
	 /// CSV文件转换类
	 /// </summary>
	 public static class CsvHelper
	 {
	 /// <summary>
	 /// 导出报表为Csv
	 /// </summary>
	 /// <param name="dt">DataTable</param>
	 /// <param name="strFilePath">物理路径</param>
	 /// <param name="tableheader">表头</param>
	 /// <param name="columname">字段标题,逗号分隔</param>
	 public static bool dt2csv(DataTable dt, string strFilePath, string tableheader, string columname)
	 {
	 try
	 {
	 string strBufferLine = "";
	 StreamWriter strmWriterObj = new StreamWriter(strFilePath, false, System.Text.Encoding.UTF8);
	 strmWriterObj.WriteLine(tableheader);
	 strmWriterObj.WriteLine(columname);
	 for (int i = 0; i < dt.Rows.Count; i++)
	 {
	 strBufferLine = "";
	 for (int j = 0; j < dt.Columns.Count; j++)
	 {
	 if (j > 0)
	 strBufferLine += ",";
	 strBufferLine += dt.Rows[i][j].ToString();
	 }
	 strmWriterObj.WriteLine(strBufferLine);
	 }
	 strmWriterObj.Close();
	 return true;
	 }
	 catch
	 {
	 return false;
	 }
	 }
	
	 /// <summary>
	 /// 将Csv读入DataTable
	 /// </summary>
	 /// <param name="filePath">csv文件路径</param>
	 /// <param name="n">表示第n行是字段title,第n+1行是记录开始</param>
	 public static DataTable csv2dt(string filePath, int n, DataTable dt)
	 {
	 StreamReader reader = new StreamReader(filePath, System.Text.Encoding.UTF8, false);
	 int i = 0, m = 0;
	 reader.Peek();
	 while (reader.Peek() > 0)
	 {
	 m = m + 1;
	 string str = reader.ReadLine();
	 if (m >= n + 1)
	 {
	 string[] split = str.Split(',');
	
	 System.Data.DataRow dr = dt.NewRow();
	 for (i = 0; i < split.Length; i++)
	 {
	 dr[i] = split[i];
	 }
	 dt.Rows.Add(dr);
	 }
	 }
	 return dt;
	 }
	 }
	}

试试其它关键字

　CSV文件　　　　CSV　

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