1. How to Work with Numeric and String Data
Murach, Chapter 4, Part III, pp
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2. Two Data Types Value types : variables Reference types: variables
Store their own data
Are supported by a structure
Reference types: variables
Do not store their own data
Store a reference to a memory location
Two different string variables can reference the same string location.
Supported by a class (object created from class)
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5. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

6. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

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10. Other ways to convert data types
ToString method
Parse method
Shared methods of the Convert class
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11. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

12. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

13. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

14. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

15. Murach’s Visual Basic 2008, C4
© 2008, Mike Murach & Associates, Inc.

16. Other methods to convert numbers to formatted strings
The ToString method with formatting codes
The Format method of the String class
Pp. 126 and 127
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17. Other chapter topics Variable Scope (on test)
Enumeration (not on test) – defines a set of related constants.
Nullable types (not on test) – useful for databases
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18. Optional practice
Exercise 4-1
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