Constructors cannot accept arguments in the same way as other methods.

To make a property read-only, you must omit the get accessor for the property.

A class is not an object; it is a description of an object.

Assume that a class has a field named count. A method in the same class has a local variable named count. If the method executes the statement count = 10; the value 10 will be assigned to the count field, not the local variable.

When you create an object from a class you use a reference variable to reference that object.

The set accessor is executed any time that a property is read.

When a class contains a method that uses the public access modifier, the method can be called from outside the class.

If you call a method that has a reference parameter, you must also write the keyword ref before the argument.

In the following statement, the value of the number variable will be left justified within a field that is 30 spaces wide.string message = String.Format(“{0,-30}”, number);

When you call a string object’s Split method, the method extracts tokens from the string and returns them as integers.