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C# Format Syntax Example - ASPNET CSharp String Method - Sample

Description: Here is a Format Example that illustrates the C# Syntax in ASP.NET.

Example Webform Code:

< %@ Page Language="C#" AutoEventWireup="true" CodeFile="Format.aspx.cs" Inherits="StringManipulation_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:label ID="Label2" runat="server" Text="Label"></asp:label><br />
        <asp:label ID="Label3" runat="server" Text="Label"></asp:label><br />
        <asp:label ID="Label4" runat="server" Text="Label"></asp:label><br />
    </div>
    </form>
</body>
</html>

Example Code Behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
// This example is from http://idealprogrammer.com
// It shows how you can use Format syntax in C-Sharp ASP.NET
//****************************************************************************************
// 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.
//
//****************************************************************************************
 
 
public partial class StringManipulation_Format : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Label1.Text = "Example #1: 	Format(Expression,style) $#,##0;;\\Z\\e\\r\\o";
 
        string strStyle = "$#,##0;;\\Z\\e\\r\\o";
 
 
 
        // Return 
        Label2.Text = Microsoft.VisualBasic.Strings.Format(1, strStyle); //Returns $1
        Label3.Text = Microsoft.VisualBasic.Strings.Format(-1, strStyle); //Returns -$1
        Label4.Text = Microsoft.VisualBasic.Strings.Format(0, strStyle); //Returns Zero
 
    }
}

Example Connection String: