Question

I want to add two strings to a string[] list without using a string array. I used a string array named str but I want to add d.Name and d.AvailableFreeSpace directly to list. Is there a way to do this?

public static List<string[]> GetReadyDrives()
{
    DriveInfo[] drives = DriveInfo.GetDrives();
    List<DriveInfo> readyDrives = new List<DriveInfo>();
    List<string[]> parsedReadyDrives = new List<string[]>();

    for (int i = 0; i < drives.Length; i++)
    {
        if (drives[i].IsReady)
        {
             readyDrives.Add(drives[i]);
        }
    }
    foreach (DriveInfo d in readyDrives)
    {
        string[] str=new string[2];
        str[0] = d.Name;
        str[1] = d.AvailableFreeSpace.ToString();
        parsedReadyDrives.Add(str);
    }
    return parsedReadyDrives;
}

Answer 1

public static List<string[]> GetReadyDrives()
{
    return DriveInfo.GetDrives()
        .Where(d => d.IsReady)
        .Select(d => new[] { d.Name, d.AvailableFreeSpace.ToString() })
        .ToList();
}

…but, to be honest, you’d be better off doing this:

class ReadyDriveInfo
{
    public string Name { get; set; }
    public string AvailableFreeSpace { get; set; }
}

public static List<ReadyDriveInfo> GetReadyDrives()
{
    return DriveInfo.GetDrives()
        .Where(d => d.IsReady)
        .Select(d => new ReadyDriveInfo
            {
                Name = d.Name,
                AvailableFreeSpace = d.AvailableFreeSpace.ToString()
            })
        .ToList();
}

… but, even there, why do you want the free space as a string?