根据文件夹 C# Winforms 的内容检查和列出子文件夹

Question

I have a folder called "C:\\Foo\\" and in that folder, there are folders "Bar" , "Bob" , "Bill" and "BAM" . In each folder, there are a buncha files.

I wanna run through all of "C:\\Foo\\" subfolders and return folder names based on their contents or lack thereof:

foreach (folder in folders)
{
    if (folder !contains "someFile.pdf")
    {
        listBox1.Items.Add(folder);
    }

So that listBox1 will fill up with "Bob", "BAM" and "Bill" cuz they don't have someFile.pdf. So then I can see that Bob, BAM and Bill all don't have someFile.pdf in their folders.

I've checked around and I've found code that does similar stuff, but nothing to populate an list of subfolders based on their contents.

Answer 1

You will need to use FileSystemObject to iterate through your folders and files.

string[] files = 
    Directory.GetFiles("C:\Foo\","*", SearchOption.AllDirectories);

Refer to MDSN for details: Directory.GetFiles Method

Or as @BradleyDotNet suggested (Thanks), use EnumerateFiles :

Refer to Docs for details: Directory.EnumerateFiles

string sourceDirectory = @"C:\foo";

    try
    {
        var allFiles
          = Directory.EnumerateFiles(sourceDirectory, "*", SearchOption.AllDirectories);

        foreach (string currentFile in allFiles)
        {
            string fileName = currentFile.Substring(sourceDirectory.Length + 1);
        }
    }
    catch (Exception e)
    {
        Console.WriteLine(e.Message);
    }