StrConv() Example Syntax VB.NET ASP.NET | StrConv() | Source Code

Posted by on Sunday, March 6, 2011 · Leave a Comment 

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StrConv Example Syntax VB.NET ASP.NET | StrConv | Source Code

Summary: – Illustrates using with in VB.NET ASP.NET.


 *** 1. Download Source Code *** 

VB.NET Syntax StringManipulation StrConv download Download Source Code for All VB ASP.NET Examples in One Project – source code for hundreds of VB.NET ASP.NET examples neatly organized in a single project. Check back often to download the latest version of the project with even more code samples.


 *** 2. StrConv Syntax *** 


Purpose:
returns string converted as specified


Syntax:
StrConv(string1,conversion,LocalId)

ParametersDescription
string1Required. String expression to be converted.
conversionRequired. VbStrConv member. The enumeration
value specifying the type of conversion to perform.
Enumeration(member) Description()
VbStrConv.None() Performs no conversion
VbStrConv.LinguisticCasing() Uses linguistic rules for casing, rather than File System
(default). Valid with VbStrConv.UpperCase and VbStrConv.LowerCase only.
VbStrConv.Uppercase() Converts the string to uppercase characters.
VbStrConv.Lowercase() Converts the string to lowercase characters.
VbStrConv.ProperCase() Converts the first letter of every word in string to uppercase.
VbStrConv.Wide* Converts narrow (half-width) characters in the string to wide
(full-width) characters.
VbStrConv.Narrow* Converts wide (full-width) characters in the string to narrow
(half-width) characters.
VbStrConv.Katakana** Converts Hiragana characters in the string to Katakana characters.
VbStrConv.Hiragana** Converts Katakana characters in the string to Hiragana characters.
VbStrConv.SimplifiedChinese* Converts Traditional Chinese characters to Simplified Chinese.
VbStrConv.TraditionalChinese* Converts Simplified Chinese characters to Traditional Chinese.
* – Chinese locales only
** – Japanese locales only
LocalIdOptional. The LocaleID value, if different from the system LocaleID value.
(The system LocaleID value is the default.)

Result Data TypeDescription
stringConverted string expression



 *** 3. StrConv – Quick Example *** 

Dim strString1 As String = "Hello"
TextBox1.Text = StrConv(strString1, VbStrConv.Lowercase) 'Returns hello


 *** 4. StrConv – Full Example *** 

StrConv Example Output Screenshot


VB.NET Syntax StringManipulation StrConv screenshot


Step 1: Click on Visual Basic to Cut-n-paste code into StrConv.aspx.vb
 Visual Basic |  copy code |? 
Imports System
Imports System.IO
Imports System.Data
 
' This example is from http://idealprogrammer.com
' It shows how you can use StrConv syntax in VB.NET ASP.NET
 
'****************************************************************************************
' Purpose: returns string converted as specified
'
' Syntax: 	StrConv(string1,conversion,LocalId)
'
' Parameter1: string1 - Required. String expression to be converted.
'
' Parameter2: conversion - Required. VbStrConv member. The enumeration 
' value specifying the type of conversion to perform.
' Enumeration(member)         Description()
' VbStrConv.None()            Performs no conversion
' VbStrConv.LinguisticCasing() Uses linguistic rules for casing, rather than File System 
' (default). Valid with VbStrConv.UpperCase and VbStrConv.LowerCase only.
' VbStrConv.Uppercase()       Converts the string to uppercase characters.
' VbStrConv.Lowercase()       Converts the string to lowercase characters.
' VbStrConv.ProperCase()      Converts the first letter of every word in string to uppercase.
' VbStrConv.Wide*              Converts narrow (half-width) characters in the string to wide
'  (full-width) characters.
' VbStrConv.Narrow*            Converts wide (full-width) characters in the string to narrow 
' (half-width) characters.
' VbStrConv.Katakana**          Converts Hiragana characters in the string to Katakana characters.
' VbStrConv.Hiragana**          Converts Katakana characters in the string to Hiragana characters.
' VbStrConv.SimplifiedChinese* Converts Traditional Chinese characters to Simplified Chinese.
' VbStrConv.TraditionalChinese* Converts Simplified Chinese characters to Traditional Chinese.
' * - Chinese locales only
' ** - Japanese locales only
'
' Parameter3: LocalId - Optional. The LocaleID value, if different from the system LocaleID value. 
' (The system LocaleID value is the default.)
'
' Result: string - Converted string expression
'
' Quick Example:     Dim strString1 As String = "Hello"
' TextBox1.Text = StrConv(strString1, VbStrConv.Lowercase) 'Returns hello
'
'****************************************************************************************
 
 
 
Partial Class _StrConv
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        Label1.Text = "Example #1: 	StrConv(string1,conversion,LocalId) "
 
        Dim strString1 As String = "Hello"
 
        TextBox1.Text = Microsoft.VisualBasic.StrConv(strString1, VbStrConv.Lowercase) 'Returns hello
 
 
 
 
    End Sub
End Class

 
 Step 2: Click on XML to Cut-n-paste code into StrConv.aspx
 XML |  copy code |? 
< %@ Page Language="VB" AutoEventWireup="false" CodeFile="StrConv.aspx.vb" Inherits="_StrConv" %>
 
< !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>
        <h1><asp:label ID="Label1" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox1" runat="server"></asp:textbox><br />
          <h1><asp:label ID="Label2" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox2" runat="server"></asp:textbox><br />
          <h1><asp:label ID="Label3" runat="server" Text="Label"></asp:label> </h1>
         <asp:textbox ID="TextBox3" runat="server"></asp:textbox><br />
 
 
 
    </div>
    </form>
</body>
</html>
 
 

 
 Prerequistes:
  1. Install Visual Web Developer 2010
  2. Install SQL Server Express
  3. Download Northwind and Pubs Databases
  4. Attach Northwind Database to Databases in Sql Express
  5. 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:
 VB.NET ASP.NET Syntax StringManipulation StrConv
  1. Use Visual Web Developer 2010
  2. 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.
  3. Add New folder named "StringManipulation"
    • Right-click project name in solution explorer;
    • add new folder;
    • name of folder could be: StringManipulation
  4. Add Web Form Named StrConv to StringManipulation folder
    • Right-click StringManipulation folder;
    • add new item;
    • Select Web Form
    • Check place code behind in separate file
    • Web Form name could be StrConv
  5. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind StrConv.aspx.vb
  6. Click on XML in step 2 above to copy code into web form StrConv.aspx
  7. Right-click on StrConv.aspx in solution explorer and select view in browser
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