LabVIEW
offline map integration along with ploting the trajectory with the given lat and long
Not really, sorry. I haven't used them myself. I did in the past something else based on an ActiveX interface for another component but that is not actively maintained anymore and ActiveX is a legacy solution nowadays. Also it was not based on OSM at all and it was for a commercial client project, so couldn't post the code either.
Using .Net is a rather complex topic and not really a LabVIEW specific problem. Typically for .Net development you would typically rather go with C# and the Visual Studio Code environment nowadays. It's not that it can't be accessed with LabVIEW but LabVIEW never tried to teach users to program .Net, since its usage is more complicated than using LabVIEW native libraries and tools. But LabVIEW is not a CIS type application and while it has been used in the past for such things by individual users, NI never wanted to go into the realms of CIS themselves as it was not their expertise area and the market is not really big enough to try to build an entire support infrastructure for it in LabVIEW.
You would first need to learn about using .Net in general. LabVIEW resources won't teach you that. Once you know how .Net works you can start to access .Net components from within LabVIEW. Sorry for these bad news, but there simply is not an easy shortcut here.
