error in vs 2019 ??

[mostakim hamza]

Hello everyone
I'm so sorry I'm ask in this forum many times I'm very sorry :'(

anyway my question in this time for this video :

https://www.youtube.com/watch?v=gB51Tla5pPI

Why he can do it but I'm get this error ??

https://i.postimg.cc/Xv79VGYc/1-1.png

https://i.postimg.cc/QC5T6cfs/1-2.png

in here all files the project on zip :

https://1drv.ms/u/s!AqPOyLnFsNTOglN9h9_jBgi-rqHZ?e=ELLwWN

@seeplus bro don't help me you was helped me many times thank you so much .... any other guy can help me please <3

[seeplus]

That code is C++/cli (using windows forms)! so I have no idea as I don't use C++/cli :)

[mostakim hamza]

@seeplus

No problem bro you help me many times Thank you so much <3 <3 <3

[mostakim hamza]

I found solution last comment on video =D


https://i.postimg.cc/8cy4wCTL/Capture.png