This walkthrough illustrates how easily you can use Barcode Professional SDK for .NET in ASP.NET Web Applications. During the course of this walkthrough, you will accomplish the following activities:
Neodynamic Barcode Professional SDK for .NET
Microsoft .NET Framework 3.5 (ASP.NET 3.5) or greater
Microsoft Visual Studio 2008
Microsoft Visual Web Developer 2008 Express Edition (VWD)
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Barcode Professional SDK in ASP.NET</title>
<style type="text/css">
.newStyle1 {
font-family: arial, Helvetica, sans-serif;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<div class="newStyle1">
<h3>Barcode Professional SDK in ASP.NET</h3>
<br />
Enter Value to Encode:
<br />
<asp:TextBox ID="TextBox1" runat="server" Width="264px">
</asp:TextBox><asp:Button ID="Button1" runat="server" Text="Barcode Now!"
onclick="Button1_Click" />
<br />
<br />
<asp:Image ID="Image1" runat="server" Visible="false" />
</div>
</form>
</body>
</html>
If (Me.TextBox1.Text.Length > 0) Then
Me.Image1.ImageUrl = "~/BarcodeGen.ashx?code=" + Me.TextBox1.Text
Me.Image1.Visible = True
End If
if (this.TextBox1.Text.Length > 0)
{
this.Image1.ImageUrl = "~/BarcodeGen.ashx?code=" + this.TextBox1.Text;
this.Image1.Visible = true;
}
<%@ WebHandler Language="VB" Class="BarcodeGen" %>
Imports System
Imports System.Web
Imports Neodynamic.SDK
Public Class BarcodeGen : Implements IHttpHandler
Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
'Get value to encode from querystring
Dim valueToEncode As String = context.Request("code")
'Create BarcodeProfessional object
Dim bc As New BarcodeProfessional()
'Set barcode standard
bc.Symbology = Symbology.Code128
'Set value to encode
bc.Code = valueToEncode
'Generate barcode
context.Response.ContentType = "image/gif"
context.Response.BinaryWrite(bc.GetBarcodeImage(System.Drawing.Imaging.ImageFormat.Gif))
End Sub
Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
Get
Return False
End Get
End Property
End Class
<%@ WebHandler Language="C#" Class="BarcodeGen" %>
using System;
using System.Web;
using Neodynamic.SDK;
public class BarcodeGen : IHttpHandler {
public void ProcessRequest (HttpContext context) {
//Get value to encode from querystring
string valueToEncode = context.Request["code"];
//Create BarcodeProfessional object
BarcodeProfessional bc = new BarcodeProfessional();
//Set barcode standard
bc.Symbology = Symbology.Code128;
//Set value to encode
bc.Code = valueToEncode;
//Generate barcode
context.Response.ContentType = "image/gif";
context.Response.BinaryWrite(bc.GetBarcodeImage(System.Drawing.Imaging.ImageFormat.Gif));
}
public bool IsReusable {
get {
return false;
}
}
} 
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