Faster Smarter Beginning Programming

Example: Reporting Crocodiles

To illustrate in a practical way how code and Windows form controls inter- act, this exercise develops a simple data-entry program that reports crocodile sightings. Figure 10-5 shows the finished result.

Figure 10-5. This form accepts reports of crocodile sightings and appends each report to a file.

For simplicity, the output file format is comma separated value (CSV). This is a plain text file format that meets these specifications:

• Each line in the file contains one record.

• Each record contains the same combination of fields (although not, of course, the same field values).

• Within each line, commas separate each field ...