VB.NET Left() – Code Sample Syntax Example

VB.NET Left() – Code Sample Syntax Example

Purpose: – Illustrates using VB.NET Left() Code Example.
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 “StringManipulation”
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: StringManipulation
4. Add Class Named clsLeft to StringManipulation folder
   • Right-click StringManipulation folder;
   • add new item;
   • Select class
   • Class name could be clsLeft
5. Click on copy code in code below to copy code into clsLeft.vb
6. Click on copy code in second set of code below to copy code into Module1.vb
7. Click green arrow or press F5 to run program

Step 1: Use Copy Code to Cut-n-paste code into clsLeft.vb

Public Class clsLeft
 
    Public Sub Main()
 
 
        '****************************************************************************************
        ' Purpose: Returns a string containing a specified number of characters from the left
        ' side of a string.
        '
        ' Syntax: 	Left(str As String, Length As Integer) As String
        '
        ' str - Required - String expression from which characters will be returned.
        ' Length - Required - Specifies number of characters to return.
        '****************************************************************************************
 
        Console.WriteLine("Example #1: 	Left(str As String, Length As Integer) As String") 
 
        Console.WriteLine(Left("Ideal Programmer", 5)) ' Returns Ideal
 
 
        '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: Use View Plain to Cut-n-paste code into Module1.vb

Module Module1
 
    Sub Main()
 
 
        Dim myclsLeft As New clsLeft
        myclsLeft.Main()
 
 
 
    End Sub
 
End Module