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VB.NET

Chapter 1

 

•An Introduction to Computers and Visual Basic.NET

Outline and Objectives

•Introduction to Computers

•Using Windows

•Files and Folders

•An Introduction to Visual Basic.NET

•Biographical History of Computing

Introduction to Computers

•Personal computer

•Generally, a computer that is operated by one person at a time

Computer uses in Society

•Banking – customer transactions

•Airlines – reservations system

•NASA – control satellites

•Internet – email, research, shopping

Programs Students Will Create in This Text

•Create and manage a list of friends' addresses and phone numbers

•Calculate loan payments and amortization

•Computations to support other course work

Communicating with the Computer

•Machine language – low level, 0 and 1, hard for humans to understand

•VB.NET – high level, understood by humans, consists of instructions such as Click, If, Do

Computers and Complicated Tasks

•Tasks are broken down into instructions that can be expressed by a computer language

•A program is a sequence of instructions

•Programs can be only a few instructions or millions of lines of instructions

Servers

•A server can be almost any computer

•A server provides resources to other computers

•Files

•Internet

•Printers

All Programs Have in Common:

•Take data and manipulate it to produce a result

•Input – Process – Output

•Input – from files, the keyboard, or other input device

•Output – to the monitor, printer, file, or other output device

Hardware and Software

•Hardware – the physical components of a computer

•Keyboard

•Disk drive

•Monitor

•Software – The instructions that tell the computer what to do

Programmer and User

•Programmer – the person who solves the problem and writes the instructions for the computer

•User – any person who uses the program written by the programmer

Problem Solving

•Developing the solution to a problem

•Algorithm – a step by step series of instructions to solve a problem

Types of Problems in this Text

•Business computations

•Managing records

•Managing lists

•And more

VB.NET

•BASIC developed at Dartmouth in the early 1960s

•Visual Basic created by Microsoft in 1991

•VB.NET similar to Visual Basic, but more powerful

Internet

•A connection of thousands of networks around the world – each network has

•A computer and one or more routers

•Router is a device or computer connected to two or more networks

•All use TCP/IP

World Wide Web vs. Internet

•World Wide Web is a collection of information stored on servers throughout the Internet known as Web servers.

•HTTP – HyperText Transfer Protocol enabled researchers to share data – creating a "web" of information

•Internet is used to access documents on the World Wide Web

Mouse Actions:

•Pointing

•Hovering

•Clicking

•Double-Clicking

•Dragging

Windows and Its Little Windows

•Title Bar

•Active window

Using the Notepad

•Reviewing Notepad to learn more about Windows application

•Notepad is an item in the Accessories menu

•Notepad can be used to create simple data files

Parts of the Window

•Restore button

•Vertical scroll bar

•Horizontal scroll bar

•Menu bar

1.3 Files & Folders:

•Disk is a permanent storage.

•A disk can store thousands of files.

•A disk drive is identified by a letter.

•To organize your files you have to store them in different folders (directories).

Using Windows Explorer

•Start | Run | type in Explorer

•Folder pane on left

•Detail pane on right

To Display File Extensions

•Alt/T/O

•Click View

•Uncheck "Hide file extensions for known file types"

•Click OK

To Create a New Folder

•Highlight the folder that is to contain the new folder

•File | New | Folder

•Type in a name for the new folder and press Enter

To Rename a Folder or File

•Right click on the folder or file

•Click on Rename

•Type in a new name (or alter the current name) and press Enter

To Delete a Folder or File

•Right click on the folder

•Click on Delete

•Click on Yes

To Copy a Folder or File

•Right click on the folder file

•Click on copy

•Open the folder where the copy is to be placed

•Right click on the second folder

•Click on Paste

To Move a Folder or File

•Right click on the folder or file

•Click on Cut

•Open the folder where the copy is to be moved

•Click on the second folder with the right mouse button

•Click on Paste

Chapter 1 - VB.NET by Schneider