匿名用户同时需要读和写的权限

好的，你可以修改以下代码，配置匿名用户同时拥有读写权限：

using (ServerManager serverManager = new ServerManager())
{
    Site site = serverManager.Sites.Add("FTP Site", "ftp", "*:21:", @"C:\inetpub\ftproot");
    site.ServerAutoStart = true;
    site.ApplicationDefaults.EnabledProtocols = "ftp";
 
    Configuration config = serverManager.GetApplicationHostConfiguration();
    ConfigurationSection authorizationSection = config.GetSection("system.ftpServer/security/authorization", "FTP Site");
    ConfigurationElementCollection authorizationCollection = authorizationSection.GetCollection();
 
    ConfigurationElement addElement = authorizationCollection.CreateElement("add");
    addElement["accessType"] = @"Allow";
    addElement["users"] = @"*";
    addElement["permissions"] = @"Read,Write";
    authorizationCollection.Add(addElement);
 
    serverManager.CommitChanges();
}

这段代码与之前的代码几乎相同，只是在授权配置中，将权限从"Read"修改为"Read,Write"。这样匿名用户就可以同时拥有读写权限了。