I want to make simple Yes/No choiced MessageBox, but I think it is nonsense to design a form for that. I thought I could use MessageBox, add buttons, etc. to accomplish this
@Mikael Svenson's answer is correct. I just wanted to add a small addition to it:
The Messagebox icon can also be included has an additional property like below:
DialogResult dialogResult = MessageBox.Show("Sure", "Please Confirm Your Action", MessageBoxButtons.YesNo, MessageBoxIcon.Question);