To delete all the files from the directory.

Suppose you want to delete all the files from the directory then you have to use the following code.

public void deleteFile(string pathDirectory)
    {
        if (Directory.Exists(HttpContext.Current.Server.MapPath(pathDirectory)))
        {
            string[] files = System.IO.Directory.GetFiles(HttpContext.Current.Server.MapPath(pathDirectory));
            foreach (string name in files)
            {
                File.Delete(name);
            }
        }
    }