/// <summary>
/// 非递归遍历文件夹
/// </summary>
public class UnRecursionDirectoryReader
{
public event UnRecursionRead OnUnRecursionItemRead;
public event UnRecursionRead OnUnRecursionDequeue;
public event UnRecursionRead OnUnRecursionEnqueue;
public void Read(string Path)
{
string P_Path = Path;
Queue<string> source = new Queue<string>();
bool IsHasChild = true;//是否有子文件夹
while (IsHasChild)
{
string[] Directorys = System.IO.Directory.GetDirectories(P_Path);
string[] Files = System.IO.Directory.GetFiles(P_Path);
foreach (string dir in Directorys)
{
source.Enqueue(dir); //入队列,开始访问文件夹
if (OnUnRecursionEnqueue != null) OnUnRecursionEnqueue(dir, P_Path);
}
foreach (string file in Files)
{
if (OnUnRecursionItemRead != null) OnUnRecursionItemRead(file, P_Path); //访问文件 }
if (source.Count > 0)
{
string OldPath = P_Path;
P_Path = source.Dequeue();//出队列,更换文件夹
if (OnUnRecursionDequeue != null) OnUnRecursionDequeue(P_Path, OldPath);
}
else
{
IsHasChild = false;
}
}
}
}
demo:
TreeNode TargetNode = null; //指向treeview的结点
Queue<TreeNode> TreeQueue = new Queue<TreeNode>(); //临时存放
private void read()
{
CYS.UnRecursionDirectoryReader TreeReader = new CYS.UnRecursionDirectoryReader();
TreeReader.OnUnRecursionDequeue+=new CYS.UnRecursionRead(TreeReader_OnUnRecursionDequeue);
TreeReader.OnUnRecursionEnqueue+=new CYS.UnRecursionRead(TreeReader_OnUnRecursionEnqueue);
TreeReader.OnUnRecursionItemRead+=new CYS.UnRecursionRead(TreeReader_OnUnRecursionItemRead);
TreeReader.Read(AppRoot);
}
private void TreeReader_OnUnRecursionItemRead(string DireName, string Parent)
{
TargetNode.Nodes.Add(System.IO.Path.GetFileName(DireName));
}
private void TreeReader_OnUnRecursionDequeue(string DireName, string Parent)
{
TargetNode = TreeQueue.Dequeue();
}
private void TreeReader_OnUnRecursionEnqueue(string DireName, string Parent)
{
TreeNode Node = new TreeNode(System.IO.Path.GetFileName(DireName));
TargetNode.Nodes.Add(Node);
TreeQueue.Enqueue(Node);
}
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