Question: I am trying to complete Chapter 9 exercise 9 in C# Programming: From Problem Analysis to Program Design. I have both first name and last

I am trying to complete Chapter 9 exercise 9 in C# Programming: From Problem Analysis to Program Design. I have both first name and last name textboxes, an account number textbox, and an initial balance textbox. I need to make error messages when the user doesnt enter their info, but can't figure out the if statements that i need to use. What would you suggest? Thanks

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