A common question that routinely comes up is how to share data between forms.
I have outlined two common ways to pass data between forms, among many others. I have used a public property on the output form to accept a value and update the display. I also have a method accepting parameters from the input form, to update the display.
On the first form there are three textboxes tbFirstName, tbLastName, and tbSample with a Submit button to redirect to the output form. I have the same layout on the output form to display the passed values.