VB.NET ASP.NET Chars() Source Code Syntax Example

Posted by on Sunday, February 20, 2011 · Leave a Comment 

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

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

 *** 1. Download Source Code *** 
VB.NET Syntax StringManipulation Chars 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.

 *** 2. Chars Syntax *** 


Purpose:
Gets the character at the specified index – index is 0 based


Syntax:
myString.Chars(index)

Parameters Description
myString string
index valid numeric expression

Result Data Type Description
Char returns the charater at the specified index


 *** 3. Chars – Quick Example *** 
Dim strCharsExample As String = “ABC”
TextBox1.Text = strCharsExample.Chars(1) ‘ Returns B

 *** 4. Chars – Full Example *** 

Chars Example Output Screenshot


VB.NET Syntax StringManipulation Chars screenshot


Step 1: Click on Visual Basic to Cut-n-paste code into Chars.aspx.vb

Imports System
Imports System.IO
Imports System.Data
 
 
' This example is from http://idealprogrammer.com
' It shows how you can use Chars syntax in VB.NET ASP.NET
'****************************************************************************************
' Purpose: Gets the character at the specified index - index is 0 based
'
' Syntax: 	myString.Chars(index)
'
' Parameter1: myString - string
'
' Parameter2: index - valid numeric expression
'
' Result: Char - returns the charater at the specified index
'
' *********************************************************
'
' Quick Example:  Dim strCharsExample As String = "ABC"
' TextBox1.Text = strCharsExample.Chars(1) ' Returns B
'
'****************************************************************************************
 
Partial Class _Chars
    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: strCharsExample.Chars(1)"
        Dim strCharsExample As String = "ABC"
        TextBox1.Text = strCharsExample.Chars(1) ' Returns B
 
    End Sub
 
End Class

Step 2: Click on XML to Cut-n-paste code into Chars.aspx

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="Chars.aspx.vb" Inherits="_Chars" %>
 
< !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 Chars
  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 Chars 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 Chars
  5. Click on Visual Basic in step 1 at the top of this page to copy code into code-behind Chars.aspx.vb
  6. Click on XML in step 2 above to copy code into web form Chars.aspx
  7. Right-click on Chars.aspx in solution explorer and select view in browser

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