What have you tried? I can only provide links, or code snippets to fix the code of the people asking the question, but I don't always provide code. And even if I did, I'm not sure if it helped because I'm not sure you will understand. I suggest you start reading this
] tutorial. It includes basic code snippets on how to add, update, and delete records on your database using Winforms and VB.Net. MSDN
] has also good articles regarding the topic. If you need more resources, you can always visit Google
] and be amazed at the abundance of information that you can get.