mTECH 270

Visual Basic offers a rich assortment of built-in functions. The on-line help utility
will give you information on any or all of these functions and their use. Some
examples are:


Function                      Value Returned
Abs                              Absolute value of a number
Asc                              ASCII or ANSI code of a character
Chr                              Character corresponding to a given ASCII or ANSI code
Cos                              Cosine of an angle
Date                             Current date as a text string
Format                         Date or number converted to a text string
Left                              Selected left side of a text string
Len                              Number of characters in a text string
Mid                             Selected portion of a text string
Now                           Current time and date
Right                           Selected right end of a text string
Rnd                            Random number
Sin                             Sine of an angle
Sqr                            Square root of a number
Str                            Number converted to a text string
Time                         Current time as a text string
Timer                        Number of seconds elapsed since midnight
Val                            Numeric value of a given text string

ARITHETIC OPERATORS
 
Operator     Operation
^                   Exponentiation
* /                 Multiplication and division
\                    Integer division (truncates)
 %                 Mod Modulus
+ -                Addition and subutraction



CONCERTINATION

To concatentate two strings, use the & symbol or the + symbol: e.g
lblTime.Caption = "The current time is" & Format(Now, “hh:mm”)
txtSample.Text = "Hook this “ + “to this”


 COMPARISON OPERATORS

Operator        Comparison
>                     Greater than
<                     Less than
>=                   Greater than or equal to
<=                   Less than or equal to
=                     Equal to
<>                   Not equal to


LOGICAL OPERATORS

Operator          Operation
Not                   Logical not
And                  Logical and
Or                    Logical or
 

USE

<select name="select1"> 

 <option value="1">1</option> 

 <option value="2">2</option> 

 <option value="3">3</option> 

</select>

THIS IS THE CHECKBOX 

<input type="checkbox" id="checkboxA"> click to disable<br>
<input type="text" id="textbox_A"> 
<input type="text" id="textbox_B">

THIS IS THE JAVASCRIPT

<script type="text/javascript"> 
function disablefields(){ 
if (document.getElementById('checkboxA').checked == 1){ 
document.getElementById('textbox_A').disabled='disabled'; 
document.getElementById('textbox_A').value='disabled';
document.getElementById('textbox_B').disabled='disabled'; 
document.getElementById('textbox_B').value='disabled';
}else{ 
document.getElementById('textbox_A').disabled=''; 
document.getElementById('textbox_A').value='Allowed'; 
document.getElementById('textbox_B').disabled=''; 
document.getElementById('textbox_B').value='Allowed'; 
} 
} 
</script> 

STEPS

• Go to your Blog Dashboard
• Select Layout
• Click on Add Widget

• from the window that appears select Link List

• Input your Menu Details

• click on save

STEPS

Goto http://www.kingstheme.com.  Select Template and click on Blog  to download blog them

• Go to your blog Dashboard
• Select Template
• Click on Backup and Restore

•  Dowload full Template to Backup your Blog

• Click on Browse

• select your theme and click on ok

THIS IS THE PROPERTY SETTINGS FOR CONTROLS
Form1:
BorderStyle 1-Fixed Single
Caption Savings Account
Name frmSavings
Label1:
Caption Monthly Deposit
Label2:
Caption Yearly Interest
Label3:
Caption Number of Months
Label4:
Caption Final Balance
Text1:
Text [Blank]
Name txtDeposit
Text2:
Text [Blank]
Name txtInterest
Text3:
Text [Blank]
Name txtMonths
Text4:
Text [Blank]
Name txtFinal
Command1:
Caption &Calculate
Name cmdCalculate
Command2:
Caption E&xit
Name cmdExit

BELOW IS THE CODE

Dim Deposit As Single
Dim Interest As Single
Dim Months As Single
Dim Final As Single

Private Sub cmdCalculate_Click ()
Dim IntRate As Single

Deposit = Val(txtDeposit.Text)
Interest = Val(txtInterest.Text)
IntRate = Interest / 1200
Months = Val(txtMonths.Text)

Final = Deposit * ((1 + IntRate) ^ Months - 1) / IntRate
txtFinal.Text = Format(Final, "#####0.00")
End Sub

STEPS

1. Draw the user interface
2. assign properties to control
3. attach code to controls

Some Features of Visual Basic

• Full set of objects - you 'draw' the application

•  Lots of icons and pictures for your use

• Response to mouse and keyboard actions

•  Clipboard and printer access

•  Full array of mathematical, string handling, and graphics functions

• Can handle fixed and dynamic variable and control arrays

•  Sequential and random access file support

• Useful debugger and error-handling facilities

•  Powerful database access tools

• ActiveX support

• Package & Deployment Wizard makes distributing your applications

What is Visual Basic?

Visual Basic is a tool that allows you to develop Windows (GUI - Graphic User
Interface) applications. The applications have a familiar appearance to the
user.


Visual Basic is event-driven, meaning code remains idle until called upon to
respond to some event (button pressing, menu selection, ...). Visual Basic is
governed by an event processor. Nothing happens until an event is detected.
Once an event is detected, the code corresponding to that event (event
procedure) is executed. Program control is then returned to the event processor.

WHAT IS PHP

PHP stands for Hypertext Preprocesor. PHP is a server side scripting language that is embedded in HTML.

USES OF PHP

• PHP can handle forms, i.e. gather data from files, save data to a file, thru email you can send data, return data to the user.

• You add, delete, modify elements within your database thru PHP.

• Access cookies variables and set cookies.

• Using PHP, you can restrict users to access some pages of your website.

• It can encrypt data.