how to add folder to a listbox in .net?

i have a list box and i want to add a folder/directory to that which is at the specified location 开发者_如何学编程i have used the code

 string path = "E:\\shruti\\MyDir";
 DirectoryItem folder = new DirectoryItem(path);
 lstBurnItems.Items.Add(folder); //add folder to listbox

but its not working fine... what should i do to get success??

Below is an example showing how to add folders within a folder to a ListBox and to add Files within a folder into a ListBox. Sorry, you weren't clear so I gave both.

        string path = @"E:\shruti\MyDir";

        string[] dirs = Directory.GetDirectories(path);

        // For folders in the directory
        foreach(string dir in dirs)
            lstBurnItems.Items.Add(dir);


        // For files in the directory
        string[] dirFiles = Directory.GetFiles(path);

        foreach (string file in dirFiles)
            lstBurnItems.Items.Add(file);