using System;
using System.Data;
using System.IO;
using System.Linq;

namespace ChangkeTec.Utils
{
    public static class CsvHelper
    {
        public static DataTable CsvToDataTable(string csvFileName)
        {
            DataTable dt = new DataTable();
            var lines = File.ReadLines(csvFileName).ToList();
            if (lines.Count < 2)
                throw new Exception("CSV文件无数据！");
            var firstLine = lines[0];
            var columnNames = firstLine.Split(',');
            foreach (var columnName in columnNames)
            {
                var dc = new DataColumn(columnName.Trim('\"'));
                dt.Columns.Add(dc);
            }
            for (var i = 1; i < lines.Count; i++)
            {
                var line = lines[i];
                var datas = line.Split(',');
                var dr = dt.NewRow();
                for (var j = 0; j < datas.Length; j++)
                {
                    dr[j] = datas[j].Trim('\"');
                }
                dt.Rows.Add(dr);
            }
            return dt;
        }
    }
}