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

Posted by on Saturday, March 5, 2011 · Leave a Comment 

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

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

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


Purpose:
Returns the length of the string – including leading and trailing spaces


Syntax:
string.Length

Parameters Description
string Required – String of which you want to know the length

Result Data Type Description
integer Returns the number of characters in a string.


 *** 3. Length – Quick Example *** 
Dim strLengthExample As String = ” ABC “
TextBox1.Text = strLengthExample.Length ‘ returns 13; spaces are counted

 *** 4. Length – Full Example *** 

Length Example Output Screenshot


VB.NET Syntax StringManipulation Length screenshot


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

Imports System
Imports System.IO
Imports System.Data
 
 
 
 
' This example is from http://idealprogrammer.com
' It shows how you can use Length syntax in VB.NET ASP.NET
'****************************************************************************************
' Purpose:  Returns the length of the string - including leading and trailing spaces
'
' Syntax: 	string.Length
'
' Parameter1: string - Required - String of which you want to know the length
'
' Result: integer - Returns the number of characters in a string. 
'
' Quick Example:    Dim strLengthExample As String = "     ABC     "
' TextBox1.Text = strLengthExample.Length ' returns 13; spaces are counted
'
'****************************************************************************************
 
Partial Class _Length
    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: Length  "
 
        Dim strLengthExample As String = "     ABC     "
 
        TextBox1.Text = strLengthExample.Length ' returns 13
 
 
    End Sub
End Class

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

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

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