我正在开发一个项目,必须可以通过程序启用/禁用 Windows 7 Embedded 系统的集成 Windows 防火墙。
使用代码:
private static INetFwPolicy2 getCurrPolicy()
{
INetFwPolicy2 fwPolicy2;
Type tNetFwPolicy2 = Type.GetTypeFromProgID("HNetCfg.FwPolicy2");
if (tNetFwPolicy2 != null)
fwPolicy2 = (INetFwPolicy2)Activator.CreateInstance(tNetFwPolicy2);
else
return null;
return fwPolicy2;
}
public static bool GetFirewallStatus()
{
bool result = false;
try
{
INetFwPolicy2 fwPolicy2 = getCurrPolicy();
NET_FW_PROFILE_TYPE2_ fwCurrentProfileTypes;
//read Current Profile Types (only to increase Performace)
//avoids access on CurrentProfileTypes from each Property
fwCurrentProfileTypes = NET_FW_PROFILE_TYPE2_)fwPolicy2.CurrentProfileTypes;
result = (fwPolicy2.get_FirewallEnabled(fwCurrentProfileTypes));
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
return result;
}
public static void SetFirewallStatus(bool newStatus)
{
try
{
NET_FW_PROFILE_TYPE2_ fwCurrentProfileTypes;
INetFwPolicy2 currPolicy = getCurrPolicy();
//read Current Profile Types (only to increase Performace)
//avoids access on CurrentProfileTypes from each Property
fwCurrentProfileTypes = NET_FW_PROFILE_TYPE2_)currPolicy.CurrentProfileTypes;
currPolicy.set_FirewallEnabled(fwCurrentProfileTypes, newStatus);
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
}
发生的情况是,在 currPolicy 对象的每个函数调用中,我都会收到以下消息:
System.ArgumentException:值不在预期范围内。
现在有我的问题:为什么我会收到这个错误,我怎样才能让它工作?
谢谢!