VB.NET CByte – Code Sample Syntax Example

VB.NET CByte Example – Code Sample Syntax

Purpose: – Illustrates using VB.NET CByte Code Example.

Purpose:
Converts 0 to 255 unsigned (rounded) into byte data type

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

Public Class clsCByte
 
    Public Sub Main()
 
 
        '****************************************************************************************
        ' Purpose: Converts 0 to 255 unsigned (rounded) into byte data type
        '
        ' Syntax: 	CByte(numeric expression)
        '
        ' Parameter1: numeric expression - 0 to 255
        '
        ' Result: Byte - 0 to 255 unsigned and parameter1 is rounded
        '
        '****************************************************************************************
        ' This example is from http://idealprogrammer.com
 
        Console.WriteLine("Example #1: 	CByte(numeric expression)")
 
 
        Console.WriteLine(CByte(255)) ' Returns 255
 
 
        'write blank line to make output easier to read
        Console.WriteLine()
 
        Console.WriteLine("Example #2: 	CByte(numeric expression)")
 
 
        Console.WriteLine(CByte(1.5)) ' Returns 2
 
        '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 myclsCByte As New clsCByte
        myclsCByte.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:

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 “Functions”
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: Functions
4. Add New subfolder named “ConversionFunctions”
   • Right-click Functions folder in solution explorer;
   • add new folder;
   • name of folder could be: ConversionFunctions
5. Add New subfolder named “TypeConversionFunctions”
   • Right-click ConversionFunctions folder in solution explorer;
   • add new folder;
   • name of folder could be: TypeConversionFunctions
6. Add Class Named clsCByte to TypeConversionFunctions folder
   • Right-click TypeConversionFunctions folder;
   • add new item;
   • Select class
   • Class name could be clsCByte
7. Click on Visual Basic in code in step 1 above to copy code into clsCByte.vb
8. Click on Visual Basic in code in step 2 above to copy code into Module1.vb
9. Click green arrow or press F5 to run program