void BuildTreeRecursive(int parentID, FolderTree parent)
{
parent.id = parentID;
foreach (DataRow folder in dt.AsEnumerable().Where(x => x.Field <int>("PARENT_ID") == parentID))
{
if (parent.children == null)
{
parent.children = new List <FolderTree>();
}
FolderTree child = new FolderTree();
int childID = folder.Field <int>("FolderID");
parent.children.Add(child);
BuildTreeRecursive(childID, child);
}
}
public void BuildTree()
{
dt = new DataTable();
dt.Columns.Add("FolderID", typeof(int));
dt.Columns.Add("PARENT_ID", typeof(int));
dt.Rows.Add(new object[] { 1, 0 });
dt.Rows.Add(new object[] { 2, 0 });
dt.Rows.Add(new object[] { 3, 2 });
dt.Rows.Add(new object[] { 4, 1 });
dt.Rows.Add(new object[] { 5, 0 });
dt.Rows.Add(new object[] { 6, 4 });
dt.Rows.Add(new object[] { 7, 3 });
dt.Rows.Add(new object[] { 8, 0 });
dt.Rows.Add(new object[] { 9, 1 });
dt.Rows.Add(new object[] { 10, 8 });
dt.Rows.Add(new object[] { 11, 0 });
dt.Rows.Add(new object[] { 12, 11 });
dt.Rows.Add(new object[] { 13, 0 });
dt.Rows.Add(new object[] { 14, 0 });
dt.Rows.Add(new object[] { 15, 2 });
root = new FolderTree();
BuildTreeRecursive(0, root);
}
static void Main(string[] args)
{
FolderTree tree = new FolderTree();
tree.BuildTree();
}