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

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

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

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


 *** 1. Download Source Code *** 

VB.NET Syntax StringManipulation Format 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. Format Syntax *** 


Purpose:
returns a formatted string


Syntax:
Format(Expession,style)

ParametersDescription
Expressionrequired. object. any valid expression
styleoptional. string. A valid named or user-defined format String expression.
See source code for all of the styles.

Result Data TypeDescription
stringreturns formatted string



 *** 3. Format – Quick Example *** 

Dim strStyle As String = "$#,##0;;\Z\e\r\o"
TextBox1.Text = Format(1, strStyle) 'Returns $1
TextBox2.Text = Format(-1, strStyle) 'Returns -$1
TextBox3.Text = Format(0, strStyle) 'Returns Zero


 *** 4. Format – Full Example *** 

Format Example Output Screenshot


VB.NET Syntax StringManipulation Format screenshot


Step 1: Click on Visual Basic to Cut-n-paste code into Format.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 Format syntax in VB.NET ASP.NET
'****************************************************************************************
' Purpose:  returns a formatted string
'
' Syntax: 	Format(Expession,style)
'
' Parameter1: Expression - required. object. any valid expression 
'
' Parameter2: style - optional. string.  A valid named or user-defined format String expression.
' See source code for all of the styles.
'
' Result: string - returns formatted string
'
' *********************************************************
'
' Quick Example:   Dim strStyle As String = "$#,##0;;\Z\e\r\o"
'  TextBox1.Text = Format(1, strStyle) 'Returns $1
'  TextBox2.Text = Format(-1, strStyle) 'Returns -$1
'  TextBox3.Text = Format(0, strStyle) 'Returns Zero
'
'****************************************************************************************
' Example #1: 	Format(Expession,style) - returns a formatted string 
' expression - required. object. any valid expression
' style - optional. string.  A valid named or user-defined format String expression.
'
'Different Formats for Different Numeric Values
' A user-defined format expression for numbers can have from one to three sections 
' separated by semicolons. If the Style argument of the Format function contains one
' of the predefined numeric formats, only one section is allowed.
'
' Condition              Result
' One section only       The format expression applies to all values.
' Two(sections)          The first section applies to positive values and zeros; 
'                        the second applies to negative values.
' Three(sections)        The first section applies to positive values, the second 
'                        applies to negative values, and the third applies to zeros.
'
'****************************************************************************************
Partial Class _Format
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim strStyle As String = "$#,##0;;\Z\e\r\o"
        Label1.Text = "Example #1: 	Format(Expression,style) $#,##0;;\Z\e\r\o <br /> Format(1, strStyle)"
        TextBox1.Text = Microsoft.VisualBasic.Format(1, strStyle) 'Returns $1
        Label2.Text = "Example #2: 	Format(Expression,style) $#,##0;;\Z\e\r\o <br /> Format(-1, strStyle)"
        TextBox2.Text = Microsoft.VisualBasic.Format(-1, strStyle) 'Returns -$1
        Label3.Text = "Example #3: 	Format(Expression,style) $#,##0;;\Z\e\r\o <br /> Format(0, strStyle)"
        TextBox3.Text = Microsoft.VisualBasic.Format(0, strStyle) 'Returns Zero
    End Sub
End Class

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