Bytescout BarCode SDK provides both web image control and non-visual class to generate barcode as images (which can be saved as a stream or a file)

The following sample code below shows how to generate barcode image in PNG image format and output as a file attachment to the visitor from ASP.NET code:

ASP.NET (Visual Basic code)



Imports System.Drawing.Imaging

Imports Bytescout.BarCode

Partial Class _Default

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

' Create new barcode

Dim barcode As New Barcode()

' Set symbology

barcode.Symbology = SymbologyType.Code39

' Set value

barcode.Value = "Sample"

' Clear http output

Response.Clear()

' Set the content type to PNG

Response.ContentType = "image/png"

' Add content type header

Response.AddHeader("Content-Type", "image/png")

' Set the content disposition

Response.AddHeader("Content-Disposition", "inline;filename=result.png")

' Save image to output stream

barcode.SaveImage(Response.OutputStream, ImageFormat.Png)

' End response

Response.End()

End Sub

End Class

ASP.NET (C# code)



using System;

using System.Data;

using System.Drawing.Imaging;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using Bytescout.BarCode;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

// Create new barcode

Barcode barcode = new Barcode();

// Set symbology

barcode.Symbology = SymbologyType.Code39;

// Set value

barcode.Value = "Sample";

// Clear http output

Response.Clear();

// Set the content type to PNG

Response.ContentType = "image/png";

// Add content type header

Response.AddHeader("Content-Type", "image/png");

// Set the content disposition

Response.AddHeader("Content-Disposition", "inline;filename=result.png");

// Save image to output stream

barcode.SaveImage(Response.OutputStream, ImageFormat.Png);

// End response

Response.End();

}

}