Parsing a tree in C #

Question

I have a tree [textual] like this:

+---step-1
|   +---step_2
|   |   +---step3
|   |   \---step4
|   +---step_2.1
|   \---step_2.2
+---step1.2

Tree2

+---step-1
|   \---step_2
|   |   +---step3
|   |   \---step4
+---step1.2

This is just a small example: a tree can be deeper and have more children, etc.

Now I am doing this:

for (int i = 0; i < cmdOutList.Count; i++)
{
    string s = cmdOutList[i];
    String value = Regex.Match(s, @"(?<=\---).*").Value;
    value = value.Replace("\r", "");
    if (s[1].ToString() == "-")
    {
        DirectoryNode p = new DirectoryNode { Name = value };
        //p.AddChild(f);
        directoryList.Add(p);
    }
    else
    {
        DirectoryNode f = new DirectoryNode { Name = value };
        directoryList[i - 1].AddChild(f);
        directoryList.Add(f);
    }
}

But this does not handle "step_2.1" and "step_2.2"

I think that I am doing it completely wrong, maybe someone can help me with this.

EDIT :

Here is a class DirectoryNodeto make this clearer.

public class DirectoryNode
{
    public DirectoryNode()
    {
        this.Children = new List<DirectoryNode>();
    }
    public DirectoryNode ParentObject { get; set; }
    public string Name;
    public List<DirectoryNode> Children { get; set; }

    public void AddChild(DirectoryNode child)
    {
        child.ParentObject = this;
        this.Children.Add(child);
    }
}

Answer 1

If your text is so simple (simple +---or \---that is preceded by a series |), then the regex may be more than you need (and that you turn off).

DirectoryNode currentParent = null;
DirectoryNode current = null;
int lastStartIndex = 0;

foreach(string temp in cmdOutList)
{
    string line = temp;

    int startIndex = Math.Max(line.IndexOf("+"), line.IndexOf(@"\");

    line = line.Substring(startIndex);

    if(startIndex > lastStartIndex) 
    {
        currentParent = current;
    }
    else if(startIndex < lastStartIndex)
    {
        for(int i = 0; i < (lastStartIndex - startIndex) / 4; i++)
        {
            if(currentParent == null) break;

            currentParent = currentParent.ParentObject;
        }
    }

    lastStartIndex = startIndex;

    current = new DirectoryNode() { Name = line.Substring(4) };

    if(currentParent != null)
    {
        currentParent.AddChild(current);
    }
    else
    {
        directoryList.Add(current);
    }
}

Answer 2

Regex , (, , ) , . : , , , - , +---, \--- ..

: " , " , ".

- , , , , . (, , , , 2.0).

, , , \ , regex.