C# CSV 文件转换成DataTable

{
            DataTable dt = new DataTable();
            FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            StreamReader sr = new StreamReader(fs, Encoding.Default);
            //记录每次读取的一行记录
            string strLine = "";
            //记录每行记录中的各字段内容
            string[] aryLine;
            //标示列数
            int columnCount = 0;
            //标示是否是读取的第一行
            bool IsFirst = true;
            bool IsTotalResult = false;
            //逐行读取CSV中的数据
            while ((strLine = sr.ReadLine()) != null)
            {
                if (strLine == "" || strLine.Replace(",","").IsEmpty())
                {
                    continue;
                }
                aryLine = strLine.Replace(" ","").Split(',');
                if (strLine.Contains("Header_Data"))
                {
                    IsTotalResult = true;
                    continue;
                }
                if (IsTotalResult)
                {
                    if (strLine.Contains("Component_Data"))
                    {
                        string totalReuslt = dt.Rows[0]["Result"].ToString();
                        strSN = dt.Rows[0]["BarCode"].ToString();
                        if (totalReuslt.Contains('F'))
                        {
                            IsTotalResult = false;
                            dt = new DataTable();
                            IsFirst = true;
                            continue;
                        }
                        else
                        {
                            sr.Close();
                            fs.Close();
                            return true;
                        }
                    }
                    if (IsFirst == true)
                    {
                        IsFirst = false;
                        columnCount = aryLine.Length;
                        //创建列
                        for (int i = 0; i < columnCount; i++)
                        {
                            DataColumn dc = new DataColumn(aryLine[i].Trim());
                            dt.Columns.Add(dc);
                        }
                    }
                    else
                    {
                        DataRow dr = dt.NewRow();
                        for (int j = 0; j < columnCount; j++)
                        {
                            dr[j] = aryLine[j].Trim();
                        }
                        dt.Rows.Add(dr);
                    }
                    continue;
                }
                if (IsFirst == true)
                {
                    IsFirst = false;
                    columnCount = aryLine.Length;
                    //创建列
                    for (int i = 0; i < columnCount; i++)
                    {
                        DataColumn dc = new DataColumn(aryLine[i].Trim());
                        dt.Columns.Add(dc);
                    }
                }
                else
                {
                    DataRow dr = dt.NewRow();
                    for (int j = 0; j < columnCount; j++)
                    {
                        dr[j] = aryLine[j].Trim();
                    }
                    dt.Rows.Add(dr);
                }
            }
            sr.Close();
            fs.Close();
}