VB.NET StartsWith() – Code Sample

VB.NET StartsWith Example – Code Sample Syntax

Abstract: – Illustrates using .

 *** 1. Download Source Code *** 

VB.NET Syntax StringManipulation StartsWith download Download Source Code for All VB Console Examples in One Project – source code for hundreds of VB.NET console examples neatly organized in a single project.

 *** 2. StartsWith Syntax *** 


Purpose:
Returns a Boolean value that indicates if the string starts with the specified string.


Syntax:
stringtoexamine.StartsWith(stringMatch)

Parameters Description
stringtoexamine Required – string input that you want to
examine to see if it starts with stringMatch
stringMatch Required – string to compare to start of
stringtoexamine.

Result Data Type Description
boolean Returns a Boolean value that indicates if the string
starts with the specified string.


 *** 3. StartsWith – Quick Example *** 

Dim strStartsWithExample As String = “This is a test string”
Console.WriteLine(strStartsWithExample.StartsWith(“This”)) ‘Returns True

 *** 4. StartsWith – Full Example *** 

StartsWith Example Output Screenshot


VB.NET Syntax StringManipulation StartsWith screenshot


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

Public Class clsStartsWith
 
    Public Sub Main()
 
        '****************************************************************************************
        ' Purpose: Returns a Boolean value that indicates if the string starts with the specified string. 
        '
        ' Syntax: 	stringtoexamine.StartsWith(stringMatch)
        '
        ' Parameter1: stringtoexamine - Required - string input that you want to 
        ' examine to see if it starts with stringMatch
        '
        ' Parameter2: stringMatch - Required - string to compare to start of
        ' stringtoexamine. 
        '
        ' Result: boolean -  Returns a Boolean value that indicates if the string 
        ' starts with the specified string.
        '
        ' Quick Example:     Dim strStartsWithExample As String = "This is a test string"
        ' Console.WriteLine(strStartsWithExample.StartsWith("This")) 'Returns True
        '
        '****************************************************************************************
 
        '****************************************************************************************
        ' Example #1: StartsWith(string)
        ' Returns a Boolean value that indicates if the string starts with the specified string. 
        '****************************************************************************************
 
        Console.WriteLine("Example #1: stringtoexamine.StartsWith(string) ")
 
        Dim strStartsWithExample As String = "This is a test string"
 
        Console.WriteLine(strStartsWithExample.StartsWith("This")) '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 myclsStartsWith As New clsStartsWith
        myclsStartsWith.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 StartsWith

  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 clsStartsWith to StringManipulation folder
    • Right-click StringManipulation folder;
    • add new item;
    • Select class
    • Class name could be clsStartsWith
  5. Click on Visual Basic in code in step 1 above to copy code into clsStartsWith.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