csv分割字符串，注意双引号的处理

string[] SplitLine(string line)
{
string[] infos = line.Split(new char[] { ',' });

infos = RServerUtility.MergeDoubleQuotesToOne(infos);

return infos;

}

public static string[] MergeDoubleQuotesToOne(string[] orgs)
{
List<string> mergeStrings = new List<string>();
if (orgs == null || orgs.Length <= 0)
{
return mergeStrings.ToArray();
}

int count = orgs.Length;
for (int i = 0; i < count; i++)
{
    if (orgs[i].Length > 0 && orgs[i].TrimStart()[0] == '"')
    {
        orgs[i] = orgs[i].TrimStart();

        if (orgs[i].TrimEnd()[orgs[i].TrimEnd().Length - 1] == '"')
        {
            orgs[i] = orgs[i].TrimEnd();
            if (!string.IsNullOrEmpty(orgs[i]) && orgs[i].Length != 1)
            {
                orgs[i] = orgs[i].Remove(0, 1);
                orgs[i] = orgs[i].Length > 0 ? orgs[i].Remove(orgs[i].Length - 1, 1) : orgs[i];
                mergeStrings.Add(orgs[i]);
                continue;
            }
        }

        while (true)
        {
            if (i < orgs.Length)
            {
                orgs[i] = orgs[i] + "," + orgs[i + 1];

                for (int k = i + 1; k < orgs.Length - 1; k++)
                {
                    orgs[k] = orgs[k + 1];
                }

                count--;
                if (count <= i)
                {
                    break;
                }

                if (orgs[i][orgs[i].Length - 1] == '"')
                {
                    orgs[i] = orgs[i].TrimEnd();
                    orgs[i] = orgs[i].Remove(0, 1);
                    orgs[i] = orgs[i].Length > 0 ? orgs[i].Remove(orgs[i].Length - 1, 1) : orgs[i];
                    mergeStrings.Add(orgs[i]);
                    break;
                }
            }
        }
    }
    else
    {
        mergeStrings.Add(orgs[i]);
    }
}
return mergeStrings.ToArray();

}