Help vb.net or C#

[AgentBayabas04]

how do i extend connection in another form what i use to do that then when i generate voucher in 1000 voucher or 500 quantity
how to avoid already generated code to avoid stoping generating please help what should i do

[AgentBayabas04]

i want that the generator to bypass the error to continue generating and not stopping

[CyberryCJ]

You can create a script that will check if voucher code already created.