public Form1(IEnumerable <FileInfo> files)
{
InitializeComponent();
var parentList = new Dictionary <string, FileTreeNode>();
var rootNodes = new List <FileTreeNode>();
foreach (var file in files)
{
var node = new FileTreeNode(file, true);
var rootNode = AddParentsOfNode(parentList, file.Directory, node);
if (rootNode != null)
{
rootNodes.Add(rootNode);
}
}
foreach (var node in rootNodes)
{
MergeNodes(node);
}
fileTree.Nodes.AddRange(rootNodes.ToArray());
}
private FileTreeNode AddParentsOfNode(IDictionary <string, FileTreeNode> parentList, DirectoryInfo nodeDir, FileTreeNode node)
{
if (nodeDir == null)
{
return(node);
}
var parentDidNotExist = false;
if (!parentList.TryGetValue(nodeDir.FullName, out FileTreeNode parentNode))
{
parentNode = new FileTreeNode(nodeDir);
parentList[nodeDir.FullName] = parentNode;
parentDidNotExist = true;
}
parentNode.Nodes.Add(node);
if (parentDidNotExist)
{
return(AddParentsOfNode(parentList, nodeDir.Parent, parentNode));
}
return(null);
}
