Cannot declare a class instance to be assigned to as an out parameter of library function

Question

My VB.NET script needs to use a library written in C#, specifically the Connect() method that has an out parameter that is a class. The VB.NET code calling the library method looks like this:

Dim devInfo As DeviceInfoType
myDevice.Connect(ChannelType.DEV_CHANNEL, 0, devInfo)

How the declaration looks like in the C# library:

// `ChannelType` is just an enum.
void Connect(ChannelType channel, UInt16 connectMode, out DeviceInfoType devInfo);

public class DeviceInfoType
{
    public GetIdType GetId { get; set; }
}

When I call myDevice.Connect() the computer waits a few seconds then an error is thrown (so I assume the device is being connected to, and once a connection is made the method tries to assign device info to the out parameter):

Object not set to instance of object

I can call other methods of myDevice just fine, so I assume it's something to do with the DeviceInfoType parameter. The author of the C# library told me that a C# user would have to call Connect() like this, but of course there is no out keywoard in VB.NET:

myDevice.Connect(ChannelType.DEV_CHANNEL, 0x00, out devInfo);

I also tried declaring devInfo like this, but still get the same error:

Dim devInfo As DeviceInfoType = Nothing
Dim devInfo As New DeviceInfoType

Answer 1

Turns out it was the library function that was doing something that caused the Object not set to instance of object exception. It happens because the 0x00 argument is not in the valid range; once I passed a value in the valid range there were no problems.