解析不规则csv文件文件帮助类

public class SplitHelper
{
    /// <summary>
    /// 拓展分割
    /// </summary>
    /// <param name="StrOneCsv">传入csv字符串</param>
    /// <returns></returns>
    public string[] ExpandSplit(string StrOneCsv)
    {
        StrOneCsv += ",";
        ArrayList arrayList = new ArrayList();
        string textCsv = "";
        bool flagone = false;
        for (int i = 0; i < StrOneCsv.Length; i++)
        {
            char Chars = StrOneCsv[i];
            bool flagTow = Chars == ',';
            if (flagTow)
            {
                bool flagThree = !flagone;
                if (flagThree)
                {
                    bool flagFour = textCsv == "\"";
                    if (flagFour)
                    {
                        textCsv = "";
                    }
                    arrayList.Add(textCsv);
                    textCsv = "";
                }
                else
                {
                    textCsv += Chars.ToString();
                }
            }
            else
            {
                bool flagFive = Chars == '"';
                if (flagFive)
                {
                    bool flagSix = i + 1 < StrOneCsv.Length && StrOneCsv[i + 1] == '"';
                    if (flagSix)
                    {
                        string ArgCsix = textCsv;
                        char CharTow = StrOneCsv[i];
                        textCsv = ArgCsix + CharTow.ToString();
                    }
                    else
                    {
                        bool Seven = flagone && StrOneCsv[i + 1] != ',';
                        if (Seven)
                        {
                            string ArgOenTow = textCsv;
                            string ArgOenZero = "\"";
                            char CharThree = StrOneCsv[i];
                            textCsv = ArgOenTow + ArgOenZero + CharThree.ToString();
                        }
                        else
                        {
                            flagone = !flagone;
                        }
                    }
                }
                else
                {
                    textCsv += Chars.ToString();
                }
            }
        }
        return (string[])arrayList.ToArray(typeof(string));
    }
}