如何访问目录的任何文件或子目录？

Question

I have a root directory with a path defined as

string MyPath = @"D:/Documents/Reonance Tunneling";

I have a delete method that will delete any selected sub-directory written as follows:

private void BntDeleteFolder_Click(object sender, EventArgs e)
    {
        TreeNode newSelected = TreeView1.SelectedNode;
        string DirectoryName = newSelected.Text;
        DirectoryInfo nodeDirInfo = (DirectoryInfo)newSelected.Tag;

        try
        {
            if (MessageBox.Show("Are you sure you want to delete Folder " + "'" + DirectoryName + "'" + " ?", "Message", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                foreach (FileInfo file in nodeDirInfo.GetFiles())
                {
                    File.Delete(MyPath + "//" + DirectoryName + "//" + item.Text);
                 }                  

                Directory.Delete(MyPath + "//" + DirectoryName + "//");
                newSelected.Remove();
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
    }

However if I try to delete any selected sub-directory of the sub-directory I get the following error: "Could not find part of the path... " or "The directory is not empty." Can anybody tell me how to fix this problem?

Answer 1

You are recreating plenty of ListViewItems that are never used (as Scott Chamberlain pointed out).

You already have a FileInfo instance. Simply use: FileInfo.Delete Method () on file .

and when you are done use nodeDirInfo.Delete() as well. You should probably also check for Subdirectories, not only files.

If you insist on using the static Directory - class, use Directory.Delete(nodeDirInfo.Fullname, recursive: true);

Answer 2

nodeDirInfo可以删除其所有文件和目录（ https://msdn.microsoft.com/zh-cn/library/c66e2tts(v=vs.110).aspx ）

 nodeDirInfo.Delete(true);

Answer 3

If you look at the documentation for the DirectoryInfo.Delete Method , you'll notice that it takes a bool that defines if it should also delete the subdirectories and all files in the directory. This is probably the easiest way to get around the "The directory is not empty" exception.

To avoid the "Directory not found" exception, you can just check for it first:

var fullPath = Path.Combine(MyPath, newSelected.Tag);

if (Directory.Exists(fullPath))
{
    new DirectoryInfo(fullPath).Delete(true);
}