Write a program in Visual Basic that asks the user to enter a positive integer value for n, and then calculates and displays the sum of the first n integers using a for loop. The program should also include appropriate validation to ensure that the user enters a valid integer value for n. The output should be displayed in a MessageBox or console window, depending on your preference. Your code should be properly formatted, commented, and indented for readability.
This prompt doesn't seem malicious.