Enhanced Student Poll Application?

I'm reviewing a midterm visual basic exam question that I got didn't code correctly and I cannot figure out what I'm doing wrong.

The problem is:"Figure 7.4 contains an array of survey responses that is hard-coded (1-5) into the program. Suppose we wish to process survey results that are stored in a file. First, create an application that enables the user to write survey responses to a file. Use StreamWriter to create a file called SurveyResponses.txt and write each response on a separate line. Modify the code in fig. 7.4 to read the survey responses from SurveyResponses.txt by using StreamReader. THe program should continue to read responses until it reaches the end of file. The results should be output to a text box."

Note:the output of figure 7.4 is as follows and the frequency is incremented when a user submits a response.

Rating Frequency
1
2
3
4
5

My issue is that I use StreamReader and StreamWriter to allow the user to select a location to save the file and to open the file. I believe VB must automatically create a file and automatically open it, which I cannot figure out how to do it.