下面的示例显示了如何做到这一点。它首先创建一些目录和文件，然后通过Directory.Delete（topPath，true）；：

    static void Main(string[] args)
    {
        string topPath = @"C:\NewDirectory";
        string subPath = @"C:\NewDirectory\NewSubDirectory";

        try
        {
            Directory.CreateDirectory(subPath);

            using (StreamWriter writer = File.CreateText(subPath + @"\example.txt"))
            {
                writer.WriteLine("content added");
            }

            Directory.Delete(topPath, true);

            bool directoryExists = Directory.Exists(topPath);

            Console.WriteLine("top-level directory exists: " + directoryExists);
        }
        catch (Exception e)
        {
            Console.WriteLine("The process failed: {0}", e.Message);
        }
    }

它取自https://msdn.microsoft.com/en-us/library/fxeahc5f（v=vs.110）.aspx。

在我的情况下

var PhotoFile = _context.Records.Where(x => id_or_ids.Contains(x.Id)).Select(x => x.Photo).ToList();

            System.IO.DirectoryInfo di = new DirectoryInfo("wwwroot/uploads");

            foreach (FileInfo file in di.GetFiles())
            {
                if (PhotoFile.IndexOf(file.Name) != -1)
                {
                    file.Delete();
                }
            }

private void ClearFolder(string FolderName)
{
    DirectoryInfo dir = new DirectoryInfo(FolderName);

    foreach(FileInfo fi in dir.GetFiles())
    {
        try
        {
            fi.Delete();
        }
        catch(Exception) { } // Ignore all exceptions
    }

    foreach(DirectoryInfo di in dir.GetDirectories())
    {
        ClearFolder(di.FullName);
        try
        {
            di.Delete();
        }
        catch(Exception) { } // Ignore all exceptions
    }
}

如果您知道没有子文件夹，那么像这样的操作可能是最简单的：

    Array.ForEach(Directory.GetFiles(folderName), File.Delete);

最简单的方法：

Directory.Delete(path,true);  
Directory.CreateDirectory(path);

请注意，这可能会删除文件夹上的某些权限。

在Windows 7中，如果您刚刚使用Windows资源管理器手动创建了它，则目录结构与以下类似：

C:
  \AAA
    \BBB
      \CCC
        \DDD

运行原始问题中建议的代码来清理目录C:\AAA，当尝试删除BBB时，行di.Delete（true）总是失败，并出现IOException“目录不是空的”。这可能是由于Windows资源管理器中的某种延迟/缓存。

以下代码对我来说工作可靠：

static void Main(string[] args)
{
    DirectoryInfo di = new DirectoryInfo(@"c:\aaa");
    CleanDirectory(di);
}

private static void CleanDirectory(DirectoryInfo di)
{
    if (di == null)
        return;

    foreach (FileSystemInfo fsEntry in di.GetFileSystemInfos())
    {
        CleanDirectory(fsEntry as DirectoryInfo);
        fsEntry.Delete();
    }
    WaitForDirectoryToBecomeEmpty(di);
}

private static void WaitForDirectoryToBecomeEmpty(DirectoryInfo di)
{
    for (int i = 0; i < 5; i++)
    {
        if (di.GetFileSystemInfos().Length == 0)
            return;
        Console.WriteLine(di.FullName + i);
        Thread.Sleep(50 * i);
    }
}

这将显示我们如何删除文件夹并使用文本框进行检查

using System.IO;
namespace delete_the_folder
{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void Deletebt_Click(object sender, EventArgs e)
    {
        //the  first you should write the folder place
        if (Pathfolder.Text=="")
        {
            MessageBox.Show("ples write the path of the folder");
            Pathfolder.Select();
            //return;
        }

        FileAttributes attr = File.GetAttributes(@Pathfolder.Text);

        if (attr.HasFlag(FileAttributes.Directory))
            MessageBox.Show("Its a directory");
        else
            MessageBox.Show("Its a file");

        string path = Pathfolder.Text;
        FileInfo myfileinf = new FileInfo(path);
        myfileinf.Delete();

    }


}

}