VB.NET StartsWith() – Code Sample
Posted by asp.net videos on Saturday, February 12, 2011 · Leave a Comment
Premium (Not Free) Video Tutorials
Free Video Tutorials & Free Tools
Premium (Not Free) Video Tutorials
Free Video Tutorials & Free Tools
VB.NET StartsWith Example – Code Sample Syntax
Abstract: – Illustrates using VB.NET StartsWith Code Example.
*** 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
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 |
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 |
Module Module1
Sub Main()
Dim myclsStartsWith As New clsStartsWith
myclsStartsWith.Main()
End Sub
End Module
Prerequistes:
- Install Visual Basic (Express or Standard Edition)
- Install SQL Server Express
- Download Northwind and pubs Database
- Attach Northwind Database to Databases in Sql Express
- 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:
- Use Visual Basic 2010 Express or Standard Edition
- Create new project;
- Click File/New Project
- Select Console Application Template
- Select Visual Basic for Language
- name of project could be VBNET_Syntax.
- Add New folder named “StringManipulation”
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: StringManipulation
- Add Class Named clsStartsWith to StringManipulation folder
- Right-click StringManipulation folder;
- add new item;
- Select class
- Class name could be clsStartsWith
- Click on Visual Basic in code in step 1 above to copy code into clsStartsWith.vb
- Click on Visual Basic in code in step 2 above to copy code into Module1.vb
- Click green arrow or press F5 to run program
|