C# 5.0 Programmer's Reference

736 ❘ Appendix B Data Types
Casting Arrays
You can cast variables of array types. For example, an array of Student objects is also an array of
Person objects because a Student is a type of Person. The following code demonstrates implicit
and explicit array conversions.
// Make an array of Students.
Student[] students = new Student[10];
// Implicit cast to an array of Persons.
// (A Student is a type of Person.)
Person[] persons = students;
// Explicit cast back to an array of Students.
students = (Student[])persons;
Parsing Values
Data types have parsing methods that convert string values into values of the data type. For example,
the following code parses the text in the TextBox named numValuesTextBox and saves the result in the
integer variable numValues.
int numValues = int.Parse(numValuesTextBox.Text);
The data types also provide TryParse methods that attempt to parse a string and return a boolean
value indicating whether they succeeded.
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