Question

我是编程新手。我被给了一个虚拟会议站点。现在我需要修改网站。

当用户登录会议站点时，它必须检测他的系统是否在他的系统中安装了特定的软件（该软件用于进行视频呼叫。它使用ActiveX对象）。

哪种方法可以检测系统中已安装软件的存在？（坦率地说，我甚至不知道哪种语言最适合这个目的）

Answer 1

由于您无法访问系统，因此无法真正检测到此情况。您的Web应用程序应该只是尝试创建该ActiveX的实例，并在用户失败时向用户显示消息。

Answer 2

    public static bool IsApplictionInstalled(string p_name)
{
    string keyName;

    // search in: CurrentUser
    keyName = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
    if (ExistsInSubKey(Registry.CurrentUser, keyName, "DisplayName", p_name) == true)
    {
        return true;
    }

    // search in: LocalMachine_32
    keyName = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
    if (ExistsInSubKey(Registry.LocalMachine, keyName, "DisplayName", p_name) == true)
    {
        return true;
    }

    // search in: LocalMachine_64
    keyName = @"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall";
    if (ExistsInSubKey(Registry.LocalMachine, keyName, "DisplayName", p_name) == true)
    {
        return true;
    }

    return false;
}

private static bool ExistsInSubKey(RegistryKey p_root, string p_subKeyName, string p_attributeName, string p_name)
{
    RegistryKey subkey;
    string displayName;

    using (RegistryKey key = p_root.OpenSubKey(p_subKeyName))
    {
        if (key != null)
        {
            foreach (string kn in key.GetSubKeyNames())
            {
                using (subkey = key.OpenSubKey(kn))
                {
                    displayName = subkey.GetValue(p_attributeName) as string;
                    if (p_name.Equals(displayName, StringComparison.OrdinalIgnoreCase) == true)
                    {
                        return true;
                    }
                }
            }
        }
    }
    return false;
}

Answer 3

谢谢大家。但我在C＃中使用了这个程序。我创建了这个类库，在网页中加载了dll并使用了IsApplicationInstalled方法。

public static bool IsApplicationInstalled(string p_name)
{
string displayName;
RegistryKey key;

// search in: CurrentUser
key = Registry.CurrentUser.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall");
foreach (String keyName in key.GetSubKeyNames())
{
    RegistryKey subkey = key.OpenSubKey(keyName);
    displayName = subkey.GetValue("DisplayName") as string;
    if (p_name.Equals(displayName, StringComparison.OrdinalIgnoreCase) == true)
    {
        return true;
    }
}

// search in: LocalMachine_32
key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall");
foreach (String keyName in key.GetSubKeyNames())
{
    RegistryKey subkey = key.OpenSubKey(keyName);
    displayName = subkey.GetValue("DisplayName") as string;
    if (p_name.Equals(displayName, StringComparison.OrdinalIgnoreCase) == true)
    {
        return true;
    }
}

// search in: LocalMachine_64
key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall");
foreach (String keyName in key.GetSubKeyNames())
{
    RegistryKey subkey = key.OpenSubKey(keyName);
    displayName = subkey.GetValue("DisplayName") as string;
    if (p_name.Equals(displayName, StringComparison.OrdinalIgnoreCase) == true)
    {
        return true;
    }
}
// NOT FOUND
return false;

}

如何检测Windows中是否安装了特定的软件？

3 个答案: