VB.NET OptionCompare() – Code Sample Syntax Example

VB.NET OptionCompare Example – Code Sample Syntax

Abstract: – Illustrates using .

 *** 1. Download Source Code *** 

VB.NET Syntax StringManipulation OptionCompare download Download Source Code for All VB Console Examples in One Project

 *** 2. OptionCompare Syntax *** 


Purpose:
Declares the default comparison method to use when comparing string data.


Syntax:
Option Compare { Binary | Text }

Parameters Description
Binary/Text Binary – Optional – compares based on binary representation – case sensitive
Text – Optional – compares based on text representation – case insensitive

Result Data Type Description
comparisons case sensitive if binary is specified; case insensitive if
text is specified. NOTE: Option statement must appear in a file before
any other source code statements


 *** 3. OptionCompare – Quick Example *** 


Console.WriteLine(“A” = “a”) ‘ Returns True when Option Compare Text is specified at top of page

 *** 4. OptionCompare – Full Example *** 

OptionCompare Example Output Screenshot


VB.NET Syntax StringManipulation OptionCompare screenshot


Step 1: Click Visual Basic to Cut-n-paste code into clsOptionCompare.vb

Option Compare Text
Public Class clsOptionCompare
 
    Public Sub Main()
 
 
        '****************************************************************************************
        ' Purpose: Declares the default comparison method to use when comparing string data.
        '
        ' Syntax: 	Option Compare { Binary | Text }
        '
        ' Parameter1: Binary/Text - Binary - Optional - compares based on binary representation - case sensitive
        ' Text - Optional - compares based on text representation - case insensitive
        '
        ' Result: comparisons - case sensitive if binary is specified; case insensitive if 
        ' text is specified. NOTE: Option statement must appear in a file before 
        ' any other source code statements
        '
        ' Quick Example: 
        ' Console.WriteLine("A" = "a") ' Returns True when Option Compare Text is specified at top of page
        '
        '****************************************************************************************
 
        Console.WriteLine("Example #1: 	Option Compare Text")
 
 
        Console.WriteLine("A" = "a") ' Returns True
 
 
        'write blank line to make output easier to read
        Console.WriteLine()
 
 
 
        'Prevent console from closing before you press enter
        Console.ReadLine()
 
    End Sub
 
 
End Class

Step 2: Click Visual Basic to Cut-n-paste code into Module1.vb

Module Module1
 
    Sub Main()
 
 
        Dim myclsOptionCompare As New clsOptionCompare
        myclsOptionCompare.Main()
 
 
 
    End Sub
 
End Module

Prerequistes:

  1. Install Visual Basic (Express or Standard Edition)
  2. Install SQL Server Express
  3. Download Northwind and pubs Database
  4. Attach Northwind Database to Databases in Sql Express
  5. Attach pubs Database to Databases in Sql Express

Notes:

  • Console Application is used to simplify things, but Windows Forms or Web Forms could also be used
  • You can build a library of syntax examples by using same project over and over and just commenting out what you do not want to execute in Module1.vb

Instructions:
VB.NET Syntax StringManipulation OptionCompare

  1. Use Visual Basic 2010 Express or Standard Edition
  2. Create new project;
    • Click File/New Project
    • Select Console Application Template
    • Select Visual Basic for Language
    • name of project could be VBNET_Syntax.
  3. Add New folder named “StringManipulation”
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: StringManipulation
  4. Add Class Named clsOptionCompare to StringManipulation folder
    • Right-click StringManipulation folder;
    • add new item;
    • Select class
    • Class name could be clsOptionCompare
  5. Click on Visual Basic in code in step 1 above to copy code into clsOptionCompare.vb
  6. Click on Visual Basic in code in step 2 above to copy code into Module1.vb
  7. Click green arrow or press F5 to run program