VB.NET StringBuilder Source Code Example

"I tried to learn .NET by taking boot camp classes that cost me $6,000. After taking the classes, I discovered tons of free (and very cheap) videos on the internet created by experts in the field. I found the videos to be much better than the classrooms. The videos were presented by Microsoft presenters that knew the material backwards and forwards, and they were much cheaper and better than the classroom teachers. I have spent the last three years organizing and hunting down the videos for my own use and decided that all could benefit by sharing what I found." - Wade Harvey

Click Here for Free 24 hour pass to lynda.com.
I AM VERY EXCITED ABOUT THIS AMAZING NEW DISCOVERY
Over 40,000 Top-Notch Video Tutorials (or 3,452 hours) on Lynda.com
I had stumbled across Lynda.com many times before, but never stopped to try it out. I recently took the plunge and started using Lynda.com to help me improve my javascript skills (See Javascript Essential Training 2007 by Dori Smith). It has revolutionized my understanding of the language! I love the fact that the exercise files allow you to follow along in real time with what the instructor is saying. Learning by doing is an extremely powerful technique. I have to give the site an A+ for both quality and content.

I am planning on using Lynda Videos to help me improve in:

1. HTML
2. CSS
3. Classic ASP
4. .NET (included in ASP section)
5. AJAX
6. Silverlight (in Microsoft Section)
7. SharePoint (in Microsoft Section)
8. Web Design
9. Blogging
10. SEO
11. and much more

You can learn more about Lynda.com by watching the 5-minute video at About Lynda.com. If you are only focusing on .NET, you are missing out on the "big picture" and on many of the underlying fundamentals! To be an Ideal Programmer, you need to have the largest knowledge base possible.

Looking for premium .NET Training Videos? The best premium .NET Videos that I have found are at Learn Visual Studio. Those videos are only about 50 cents per hour, as compared to $25 per hour that other sites charge!

LearnVisualStudio is currently having a 25% off sale ($50 savings) and giving away a free membership to TrainingSpot ($60 value) when LVS Lifetime Membership is purchased.

  
  

Limited Time Offer: Free Lifetime Membership to Progress Monitor ($24.95 value) when you purchase any membership at Learn Visual Studio, Lynda Videos or any hosting account at DiscountASP - just forward order confirmation to harvey007@sbcglobal.net

VB.NET StringBuilder Source Code Example

Purpose: – Illustrates using StringBuilder and StringBuilder Methods.

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 2008 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 "Language-Basics"
   • Right-click project name in solution explorer;
   • add new folder;
   • name of folder could be: Language-Basics
4. Add Class Named clsStringFormatDateTime to Language-Basics folder
   • Right-click Language-Basics folder;
   • add new item;
   • Select class
   • Class name could be clsStringBuilder
5. Click on copy code in code below to copy code into clsStringBuilder.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 clsStringBuilder.vb

 Visual Basic | 
 copy code |
?
 
001
002
Imports System.Text
003
Imports System
004
 
005
Public Class clsStringBuilder
006
 
007
    Public Sub Main()
008
 
009
        '****************************************************************************************
010
        ' Example #1: StringBuilder Append(string) - most common way stringbuilder is used
011
        ' Adds the specified string or string representation of the specified value to the end 
012
        ' of the string
013
        '****************************************************************************************
014
 
015
        Console.WriteLine("Example #1: Simple StringBuilder Append(string) ")
016
        Dim sb As New StringBuilder
017
        sb.Append("First Line")
018
        sb.Append(vbCrLf)
019
        sb.Append("Second Line")
020
 
021
        Console.WriteLine(sb.ToString())
022
 
023
        'write blank line to make output easier to read
024
        Console.WriteLine()
025
 
026
        'Append(string, startIndex, count)
027
        '****************************************************************************************
028
        ' Example #2: StringBuilder Append(string, startIndex, count) 
029
        ' Adds a substring of the specified string, starting with the specified
030
        ' position and having the specified length, to the end of the string
031
        '****************************************************************************************
032
 
033
        Console.WriteLine("Example #2: StringBuilder Append(string, startIndex, count)")
034
        Dim sb2 As New StringBuilder
035
        sb2.Append("The dog and cat ")
036
        sb2.Append("love to fight and play", 0, 13) 'take love to fight and add to end of prev string
037
        Console.WriteLine(sb2.ToString())
038
 
039
        'write blank line to make output easier to read
040
        Console.WriteLine()
041
 
042
        'Insert(index, string[, count])
043
        '****************************************************************************************
044
        ' Example #3: StringBuilder Insert(index, string[, count]) 
045
        ' Inserts the specified string or a string representation of the specified
046
        ' value at the specified position in the string the specified number of 
047
        ' times. If the count is ommitted, a single copy of the string is inserted.
048
        '****************************************************************************************
049
 
050
        Console.WriteLine("Example #3: Insert(index, string[, count])")
051
        Dim sb3 As New StringBuilder
052
 
053
        sb3.Append("This is the initial sentence")
054
        sb3.Insert(20, "and modified ", 2)
055
        Console.WriteLine(sb3.ToString())
056
 
057
        'write blank line to make output easier to read
058
        Console.WriteLine()
059
 
060
        'Remove(startIndex,count)
061
        '****************************************************************************************
062
        ' Example #4: StringBuilder Remove(startIndex,count) 
063
        ' Removes the specified number of characters from the string starting at
064
        ' the specified position
065
        '****************************************************************************************
066
 
067
        Console.WriteLine("Example #4: StringBuilder Remove(startIndex,count)")
068
        Dim sb4 As New StringBuilder
069
 
070
        sb4.Append("This is the initial sentence")
071
        sb4.Remove(20, 8)
072
        Console.WriteLine(sb4.ToString())
073
 
074
        'write blank line to make output easier to read
075
        Console.WriteLine()
076
 
077
        'Replace(oldString,newString [,startIndex][,count])
078
        '****************************************************************************************
079
        ' Example #5: StringBuilder Replace(oldString,newString [,startIndex][,count])
080
        ' Replaces all occurences of the old string with the new string starting
081
        ' at the specified position and continuing for the specified number of characters.
082
        ' If you omit startIndex, it starts at beginning
083
        ' If you omit count, it does entire string
084
        '****************************************************************************************
085
 
086
        Console.WriteLine("Example #5: StringBuilder Replace(oldString,newString [,startIndex][,count])")
087
        Dim sb5 As New StringBuilder
088
 
089
        sb5.Append("This is the initial sentence")
090
        sb5.Replace("initial", "new")
091
        Console.WriteLine(sb5.ToString())
092
 
093
        'write blank line to make output easier to read
094
        Console.WriteLine()
095
 
096
 
097
 
098
 
099
 
100
 
101
 
102
        'Prevent console from closing before you press enter
103
        Console.ReadLine()
104
 
105
    End Sub
106
 
107
 
108
End Class
109
 
110

 Visual Basic | 
 copy code |
?
 
01
02
Module Module1
03
 
04
    Sub Main()
05
        '***** Language-Basics *************
06
 
07
        Dim myStringBuilder As New clsStringBuilder
08
        myStringBuilder.Main()
09
 
10
 
11
    End Sub
12
 
13
End Module
14
 
15

Related posts:

1. C# StringBuilder Source Code Example C# StringBuilder Source Code Example...
2. VB.NET ASP.NET StringBuilder Source Code Example VB.NET ASP.NET StringBuilder Source Code Example...
3. C# ASP.NET StringBuilder Source Code Example C# ASP.NET StringBuilder Source Code Example...
4. VB.NET String – String VB.NET VB.NET String - String VB.NET ...
5. C# String Examples – String Examples C# C# String Examples - String Examples C#...

Related posts brought to you by Yet Another Related Posts Plugin.