相关疑难解决方法(0)

我正在枚举使用WMI安装的应用程序，而无论我如何构造它，此块都需要花费较长的时间才能完成。每次在我的环境中花费13秒。有没有更好（更快）的方法来检查程序是否已安装？（我使用iTunes作为示例程序进行检查）

    private static string Timestamp
    {
        get { return DateTime.Now.ToString("HH:mm:ss.ffff"); }
    }

    private static void LoadInstalledPrograms()
    {
        List<string> installedPrograms = new List<string>();
        Console.WriteLine("0 - {0}", Timestamp);
        ManagementObjectSearcher mos = new ManagementObjectSearcher("SELECT * FROM Win32_Product");
        Console.WriteLine("1 - {0}", Timestamp);
        ManagementObjectCollection managementObjectCollection = mos.Get();
        Console.WriteLine("2 - {0}", Timestamp);
        foreach (ManagementObject mo in managementObjectCollection)
        {
            installedPrograms.Add(mo["Name"].ToString());
        }
        Console.WriteLine("3 - {0}", Timestamp);
        Console.WriteLine("Length - {0}", installedPrograms.Count);
    }

选择*从Win32_Product

0 - 08:08:51.3762
1 - 08:08:51.3942
2 - 08:08:51.4012
3 - 08:09:04.8326
Length - 300

SELECT …