VB.NET ASP.NET String Examples – String Examples ASP.NET VB.NET
Get 5 Hours of FREE PREMIUM Videos:
LearnVisualStudio.NET Free Preview
“ I am a lifetime member of LearnVisualStudio.net and a Premium Plus member of dotNetVideos.net.
LearnVisualStudio.net is awesome because it grows in value each year as more videos are added.
dotNetVideos.net is also great because it focuses a lot on MS Certifications and practical interview questions.
”
- Wade Harvey (IdealProgrammer.com)
LearnVisualStudio Premium Videos
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |
dotNetVideos Premium Video Catalog
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  |  |
 |  |  |  | |
Premium (Not Free) Video Tutorials
Free Video Tutorials & Free Tools
VB.NET ASP.NET String Examples – String Examples ASP.NET VB.NET
Purpose: – Illustrates using String Properties and String Methods in VB.NET ASP.NET.
Prerequistes:
- Install Visual Web Developer 2008
- Install SQL Server Express
- Download Northwind and Pubs Databases
- Attach Northwind Database to Databases in Sql Express
- Attach pubs Database to Databases in Sql Express
Notes:
- You can build your own library of syntax examples by using same web site over and over and just add new web forms to it.
Instructions:
- Use Visual Web Developer 2008
- Create new web site;
- Click File/New Web Site
- Select ASP.NET Website Template
- Select Visual Basic for Language
- name of Web Site could be VBNET_ASPNET_Syntax.
- Add New folder named "LanguageBasics"
- Right-click project name in solution explorer;
- add new folder;
- name of folder could be: LanguageBasics
- Add Web Form Named String to LanguageBasics folder
- Right-click LanguageBasics folder;
- add new item;
- Select Web Form
- Check place code behind in separate file
- Web Form name could be String
- Click on copy code in code below to copy code into web form String.aspx
- Click on copy code in second set of code below to copy code into code-behind String.aspx.vb
- Right-click on String.aspx in solution explorer and select view in browser
Step 1: Click on Copy Code to Cut-n-paste code into String.aspx
| XML | | copy code | | ? |
< %@ Page Language="VB" AutoEventWireup="false" CodeFile="String.aspx.vb" Inherits="LanguageBasics_String" %> |
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
<html xmlns="http://www.w3.org/1999/xhtml"> |
<head runat="server"> |
<title></title> |
</head> |
<body> |
<form id="form1" runat="server"> |
<div> |
<asp :Label ID="Label1a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label1" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label2a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label2" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label3a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label3" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label4a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label4" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label5a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label5" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label6a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label6" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label7a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label7" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label8a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label8" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label9a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label9" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label10a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label10" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label11a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label11" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label12a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label12" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label13a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label13" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label14a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label14" runat="server" Text="Label"></asp><br /><br /> |
<asp :Label ID="Label15a" runat="server" Text="Label"></asp><br /> |
<asp :Label ID="Label15" runat="server" Text="Label"></asp><br /><br /> |
</div> |
</form> |
</body> |
</html> |
Step 2: Click on Copy Code to Cut-n-paste code into String.aspx.vb
| Visual Basic | | copy code | | ? |
Partial Class LanguageBasics_String |
Inherits System.Web.UI.Page |
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load |
'**************************************************************************************** |
' Example #1: StartsWith(string) |
' Example #2: EndsWith(string) |
' Example #3: IndexOf(string[, startIndex][,count]) |
' Example #4: LastIndexOf(string[, startIndex][,count]) |
' Example #5: Insert(startIndex, string) |
' Example #6: PadLeft(totalWidth [, paddingCharacter]) |
' Example #7: PadRight(totalWidth [, paddingCharacter]) |
' Example #8: Remove(startIndex, count) |
' Example #9: Replace(oldString, newString) |
' Example #10: Substring(startIndex[, length]) |
' Example #11: ToLower |
' Example #12: ToUpper |
' Example #13: Trim |
' Example #14: Length |
' Example #15: Chars(index) |
'**************************************************************************************** |
'**************************************************************************************** |
' Example #1: StartsWith(string) |
' Returns a Boolean value that indicates if the string starts with the specified string. |
'**************************************************************************************** |
Label1a.Text = "Example #1: StartsWith(string) " |
Dim strStartsWithExample As String = "This is a test string" |
Label1.Text = strStartsWithExample.StartsWith("This") 'Returns True |
'**************************************************************************************** |
' Example #2: EndsWith(string) |
' Returns a Boolean value that indicates if the string ends with the specified string. |
'**************************************************************************************** |
Label2a.Text = "Example #2: EndsWith(string) " |
Dim strEndsWithExample As String = "This is a test string" |
Label2.Text = strEndsWithExample.EndsWith("string") 'Returns True |
'**************************************************************************************** |
' Example #3: IndexOf(string[, startIndex][,count]) |
' Returns an integer that represents the position of the first occurrence of the |
' specified number of characters. If you specify startIndex, that specifies |
' where to start looking. If you specify count, that specifies how many characters to |
' to search past start. If the string is not found, this method returns -1 |
'**************************************************************************************** |
Label3a.Text = "Example #3: IndexOf(string[, startIndex][,count]) " |
Dim strIndexOfExample As String = "This is a test string" |
Label3.Text = strIndexOfExample.IndexOf("is") 'Returns 2 |
'**************************************************************************************** |
' Example #4: LastIndexOf(string[, startIndex][,count]) |
' Returns an integer that represents the position of the last occurrence of the |
' specified number of characters. If you specify startIndex, that specifies |
' where to start looking. If you specify count, that specifies how many characters to |
' to search past start. If the string is not found, this method returns -1 |
'**************************************************************************************** |
Label4a.Text = "Example #4: LastIndexOf(string[, startIndex][,count]) " |
Dim strLastIndexOfExample As String = "This is a test string" |
Label4.Text = strLastIndexOfExample.LastIndexOf("is") 'Returns 5 |
'**************************************************************************************** |
' Example #5: Insert(startIndex, string) |
' Returns a string with the specified string inserted beginning at the specified position. |
'**************************************************************************************** |
Label5a.Text = "Example #5: Insert(startIndex, string) " |
Dim strInsertExample As String = "This is a test string" |
Dim intIndex As Integer = 0 |
' First find position of word test |
intIndex = strInsertExample.IndexOf("test") |
' Insert "simple" before "test" |
Label5.Text = strInsertExample.Insert(intIndex, "simple ") |
'**************************************************************************************** |
' Example #6: PadLeft(totalWidth [, paddingCharacter]) |
' Returns a string that is right-aligned and padded on left with character specified. |
' If no padddingCharacter is specified, space is used. totalWidth is total width of column |
' This allows you to create a nice straight column even though lengths of text vary. |
'**************************************************************************************** |
Label6a.Text = "Example #6: PadLeft(totalWidth [, paddingCharacter]) " |
Dim strPadLeftExampleA As String = "This is a test string" |
' PadLeft "simple" before "test" |
Label6.Text = strPadLeftExampleA.PadLeft(35) |
'**************************************************************************************** |
' Example #7: PadRight(totalWidth [, paddingCharacter]) |
' Returns a string that is left-aligned and padded on right with character specified. |
' If no padddingCharacter is specified, space is used. totalWidth is total width of column |
' This allows you to create a nice straight column even though lengths of text vary. |
'**************************************************************************************** |
Label7a.Text = "Example #7: PadRight(totalWidth [, paddingCharacter]) " |
Dim strPadRightExampleA As String = "This is a test string" |
' PadRight "simple" before "test" |
Label7.Text = strPadRightExampleA.PadRight(35) + "next column starts here" |
'**************************************************************************************** |
' Example #8: Remove(startIndex, count) |
' Returns a string with the specified number of characters removed starting at startIndex. |
' If no Count is specified, the remainder of string is removed |
'**************************************************************************************** |
Label8a.Text = "Example #8: Remove(startIndex, count) " |
Dim strRemoveExample As String = "This is a test string" |
Dim intIndexRemove As Integer = 0 |
' First find position of word test |
intIndexRemove = strRemoveExample.IndexOf("test") |
' Remove rest of string starting with word "test" |
Label8.Text = strRemoveExample.Remove(intIndex) |
'**************************************************************************************** |
' Example #9: Replace(oldString, newString) |
' Returns a string with all occurences of oldString replaced by newString |
'**************************************************************************************** |
Label9a.Text = "Example #9: Replace(oldString, newString) " |
Dim strReplaceExample As String = "This is a test string" |
' Replace "This" with "That" |
Label9.Text = strReplaceExample.Replace("This", "That") |
'**************************************************************************************** |
' Example #10: Substring(startIndex[, length]) |
' Returns the string that starts at the specified position and has the specified |
' length. If the length is not specified, all of the characters to the end are returned. |
'**************************************************************************************** |
Label10a.Text = "Example #10: Substring(startIndex[, length]) " |
Dim strSubstringExample As String = "This is a test string" |
Dim intIndexSubstring As Integer = 0 |
' First find position of word test |
intIndexSubstring = strRemoveExample.IndexOf("test") |
' Get everything starting at "test" to end of string |
Label10.Text = strSubstringExample.Substring(intIndexSubstring) |
'**************************************************************************************** |
' Example #11: ToLower |
' Returns the string in Lowercase |
'**************************************************************************************** |
Label11a.Text = "Example #11: ToLower" |
Dim strToLowerExample As String = "This is a test string" |
' Return Lowercase |
Label11.Text = strToLowerExample.ToLower |
'**************************************************************************************** |
' Example #12: ToUpper |
' Returns the string in Uppercase |
'**************************************************************************************** |
Label12a.Text = "Example #12: ToUpper " |
Dim strToUpperExample As String = "This is a test string" |
' Return Uppercase |
Label12.Text = strToUpperExample.ToUpper |
'**************************************************************************************** |
' Example #13: Trim |
' Returns the string with leading and trailing spaces removed |
'**************************************************************************************** |
Label13a.Text = "Example #13: Trim " |
Dim strTrimExample As String = " ABC " |
' Return Uppercase |
Label13.Text = strTrimExample.Trim.Length |
'**************************************************************************************** |
' Example #14: Length |
' Returns the string with leading and trailing spaces removed |
'**************************************************************************************** |
Label14a.Text = "Example #14: Length " |
Dim strLengthExample As String = " ABC " |
' Return Uppercase |
Label14.Text = strLengthExample.Length |
'**************************************************************************************** |
' Example #15: Chars(index) |
' Gets the character at the specified index |
'**************************************************************************************** |
Label15a.Text = "Example #15: Chars(index) " |
Dim strCharsExample As String = "ABC" |
' Return Uppercase |
Label15.Text = strCharsExample.Chars(1) |
End Sub |
End Class |
Step 3: Click on Copy Code to Cut-n-paste code into web.config right after the appSettings section
| XML | | copy code | | ? |
<connectionstrings> |
<add name="Northwind_ConnectionString" |
connectionString="Server=(local)\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=SSPI" /> |
<add name="Pubs_ConnectionString" |
connectionString="Server=(local)\SQLEXPRESS;Initial Catalog=pubs;Integrated Security=SSPI" /> |
</connectionstrings> |
Related posts:
- C# String Examples – String Examples C# C# String Examples - String Examples C#...
- VB.NET String – String VB.NET VB.NET String - String VB.NET...
- VB.NET ASP.NET StringBuilder Source Code Example VB.NET ASP.NET StringBuilder Source Code Example...
- C# ASP.NET StringBuilder Source Code Example C# ASP.NET StringBuilder Source Code Example...
- VB.NET StringBuilder Source Code Example VB.NET StringBuilder Source Code Example...
Related posts brought to you by Yet Another Related Posts Plugin.
