how to show the data from 2 tables on selectedindexedchanged event

What language and tables are you using?
Although some members out here have IMHO reached the stage of mild divinity, perhaps they can. But I still cannot look over your shoulder.
So if you want an answer to your question please explain your problem in as much detail as you can.
Welcome to DaniWeb btw. :)

This is not a software development issue. It is language/system specific. Please provide the OS and languages you are using, and then please move it to the appropriate forum.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.