Infralution Support

[Blaine Fields]

In MC++, the inital license presence testing in accomplished with this code:

License* license;
if( !LicenseManager::IsValid( this->GetType(), this, &license ))
{
. . .
}

In VS 2005 using NET Framework 2.0, this code works and if a license is present in the same directory that the program is running, the IsValid() method returns true and the "license" variable is assigned a value otherwise IsValid returns false and "license" remains null.

In VS 2003 using NET Framework 1.1, the code compiles but IsValid ALWAYS returns true and "license" is ALWAYS null, whether a license is present or not.

Any ideas for a workaround for NF 1.1?

[Infralution]

We test ILS under both .NET 1.1 and .NET 2.0. Our own controls which use the licensing system are authored using .NET 1.1. So I don't think it is a framework issue. One thing that will cause IsValid to return true while leaving license null is if you forget to add the LicenseProvider attribute to the class you are licensing.

You should also use __typeof(MyClass)) rather than this->GetType(). this->GetType will return the final type of actual instance. So if someone derives from your class it will return the derived type. Since their derived type is not licensed IsValid will again always return true.

If you are licensing an application (ie not a control/component) then the latest release of ILS (2.2.0) allows a simpler approach where you don't have to use the LicenseManager class eg