VB.NET Language Basics
VB.NET Data Types:
- VB.NET provides a variety of data types to store different kinds of values.
- Data types include Integer, Floating-Point, String, Boolean, Date, Char, Decimal, Object, and Array.
- Each data type has its own range of values and operations that can be performed on it.
- Conversions in VB.NET allow you to convert values from one data type to another.
- Implicit conversions are performed automatically by the compiler when there is no loss of data.
- Explicit conversions require explicit type casting or conversion functions.
- Boxing and unboxing allow conversions between value types and reference types.
- Parse and TryParse methods are used to convert strings to other data types.
VB.NET Access Specifiers:
- Access specifiers control the visibility and accessibility of class members.
- Public allows access to a member from anywhere in the program.
- Private restricts access to a member within the same class or module.
- Protected allows access within the same class or derived classes.
- Friend allows access within the same assembly (project).
- Protected Friend allows access within the same assembly or derived classes.
- WithEvents declares a variable that can handle events.
- ReadOnly specifies that a member can only be read, not modified.
- Shadows hides an inherited member with the same name.
- Shared specifies that a member belongs to the class itself, not an instance.
- Overrides allows a derived class to provide a different implementation of an inherited member.
These concepts are essential in VB.NET programming to define and manipulate data, perform conversions between data types, and control the accessibility of code elements.