Move userform TextBox entries to cells on a sheet

My question is simple. I have a CommandButton on a worksheet named 'Workup' that, when clicked, presents a userform with 15 textboxes (TextBox1 through TextBox15). I have CommandButton1 on the userform also. When I click CommandButton1, I want the value in the textboxes to be placed in cell A1 thru A15 on the sheet named 'Invoice". I think it's just a repeat of the same line of code for each of the 15 TextBoxes. Once the cells on the sheet 'Invoice' are populated, I want to print the sheet 'Invoice' on the default printer. Then, return to the original sheet named 'Workup' and close the userform. The reason I'm using a userform is because the CommandButton does several other things also. Thanks in advance.