Guide Overview
It's easy to use BC.NetBarcodeGenerator.Qrcode library to generate and save QR Code barcode symbologies in your .NET/C#/VB.NET Class, Console Application, .NET Windows Forms, and ASP.NET web projects. Please firstly download and get the free trial library of BC.NetBarcodeGenerator.Qrcode. And the only thing for integration is to add your project reference to the library dll.
PLEASE NOTE, BC.NetBarcodeGenerator.Qrcode package only supports 2d barcode QR Code symbologies generation for .NET applications. To generate all 2d and linear/1d barcode symbologies, you should use BC.NetBarcodeGenerator.All SDK.
On this page, we provide C# and VB.NET Class coding examples of how to use BC.NetBarcodeGenerator.Qrcode library to generate 2d barcode QR Code to a local raster image file and Bitmap object. In addition, you can also output QR Code barcodes to Stream, Graphics, and HttpResponse in .NET applications.
In addition to QR Code generation in .NET/C#/VB.NET Class, you can also generate QR Code in .NET Windows Forms, ASP.NET Web Forms, and IIS applications in other ways. Please click to see details. Moreover, ASP.NET web project and .NET Windows Forms project demos are included in our free trial package. Please download a free trial to see more.
How to Generate QR Code in .NET Class
1. This section shows how to generate and save QR Code to a local raster image file on your disk in ASP.NET C# and VB.NET Class. Jpg, Jpeg, Tiff, Png, Bmp, and Gif formats are supported. Please firstly add your ASP.NET project reference to BC.NetBarcodeGeneratorTrial.Qrcode.dll.
How to in C# Class
using System;
using System.Drawing;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using BC.AspNetBarcodeGeneratorTrial.Qrcode;
namespace BCAspNetBarcodeGeneratorDemo
{
public partial class _Default : Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Qrcode barcode = new Qrcode();
barcode.SetData = "WWW.BARCODEBC.COM";
barcode.SetUOM = UnitofMeasurement.Pixel;
barcode.SetRotation = Rotation.RotateDown;
barcode.SetDPI = 96;
barcode.ApplyTilde = true;
barcode.AutoSize = false;
barcode.SetModuleSize = 3;
barcode.SetModuleColor = System.Drawing.Color.DeepPink;
barcode.SetEncodingMode = QrcodeEncodingMode.Automatic;
barcode.ApplyStructuredAppend = false;
barcode.SetECI = 3;
barcode.SetECL = QrcodeECL.LevelL;
barcode.SetFNC1 = QrcodeFNC1.None;
barcode.SetQrcodeVersion = QrcodeVersion.Version1;
barcode.StructuredAppendCount = 0;
barcode.StructuredAppendIndex = 0;
barcode.SetLeftSpace = 5;
barcode.SetRightSpace = 5;
barcode.SetTopSpace = 5;
barcode.SetBottomSpace = 5;
barcode.SetWidth = 80;
barcode.SetHeight = 80;
barcode.GenerateBarcode("F://test.png");
//In addition to String, you can also output barcode to a Bitmap object, Stream object, Graphics object, HttpResponse object or byte array.
}
}
}
How to in VB.NET Class
Imports System
Imports System.Drawing
Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports BC.AspNetBarcodeGeneratorTrial.Qrcode
Public Partial Class _Default
Inherits Page
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
End Sub
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim barcode As Qrcode = New Qrcode()
barcode.SetData = "WWW.BARCODEBC.COM"
barcode.SetUOM = UnitofMeasurement.Pixel
barcode.SetRotation = Rotation.RotateDown
barcode.SetDPI = 96
barcode.ApplyTilde = True
barcode.AutoSize = False
barcode.SetModuleSize = 3
barcode.SetModuleColor = System.Drawing.Color.DeepPink
barcode.SetEncodingMode = QrcodeEncodingMode.Automatic
barcode.ApplyStructuredAppend = False
barcode.SetECI = 3
barcode.SetECL = QrcodeECL.LevelL
barcode.SetFNC1 = QrcodeFNC1.None
barcode.SetQrcodeVersion = QrcodeVersion.Version1
barcode.StructuredAppendCount = 0
barcode.StructuredAppendIndex = 0
barcode.SetLeftSpace = 5
barcode.SetRightSpace = 5
barcode.SetTopSpace = 5
barcode.SetBottomSpace = 5
barcode.SetWidth = 80
barcode.SetHeight = 80
barcode.GenerateBarcode("F://test.png")
‘In addition to String, you can also output barcode to a Bitmap object, Stream object, Graphics object, HttpResponse object or byte array.
End Sub
End Class
2. These .NET Class coding examples show how to load an image and generate QR Code barcode symbology on it in .NET WinForms application. Please firstly add your .NET WinForms project reference to BC.NetBarcodeGeneratorTrial.Qrcode.dll. All barcodes properties reference is provided here.
How to in C# Class
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using BC.NetWinBarcodeGeneratorTrial.Qrcode;
namespace BCNetWinBarcodeGeneratorDemo
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Qrcode barcode = new Qrcode();
barcode.SetData = "WWW.BARCODEBC.COM";
barcode.SetUOM = UnitofMeasurement.Pixel;
barcode.SetRotation = Rotation.RotateDown;
barcode.SetDPI = 96;
barcode.ApplyTilde = true;
barcode.AutoSize = false;
barcode.SetModuleSize = 3;
barcode.SetModuleColor = System.Drawing.Color.DeepPink;
barcode.SetEncodingMode = QrcodeEncodingMode.Automatic;
barcode.ApplyStructuredAppend = false;
barcode.SetECI = 3;
barcode.SetECL = QrcodeECL.LevelL;
barcode.SetFNC1 = QrcodeFNC1.None;
barcode.SetQrcodeVersion = QrcodeVersion.Version1;
barcode.StructuredAppendCount = 0;
barcode.StructuredAppendIndex = 0;
barcode.SetLeftSpace = 5;
barcode.SetRightSpace = 5;
barcode.SetTopSpace = 5;
barcode.SetBottomSpace = 5;
barcode.SetWidth = 80;
barcode.SetHeight = 80;
barcode.SetImageFormat = System.Drawing.Imaging.ImageFormat.Png;
Image image = barcode.GenerateBarcode();
pictureBox1.Image = image;
//In addition to Bitmap object, you can also output barcode to a String, Stream object, Graphics object or byte array.
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
How to in VB.NET Class
Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Linq
Imports System.Text
Imports System.Windows.Forms
Imports BC.NetWinBarcodeGeneratorTrial.Qrcode
Public Class BCbarcodeWinGeneratorDemo
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim barcode As Qrcode = New Qrcode()
barcode.SetData = "WWW.BARCODEBC.COM"
barcode.SetUOM = UnitofMeasurement.Pixel
barcode.SetRotation = Rotation.RotateDown
barcode.SetDPI = 96
barcode.ApplyTilde = True
barcode.AutoSize = False
barcode.SetModuleSize = 3
barcode.SetModuleColor = System.Drawing.Color.DeepPink
barcode.SetEncodingMode = QrcodeEncodingMode.Automatic
barcode.ApplyStructuredAppend = False
barcode.SetECI = 3
barcode.SetECL = QrcodeECL.LevelL
barcode.SetFNC1 = QrcodeFNC1.None
barcode.SetQrcodeVersion = QrcodeVersion.Version1
barcode.StructuredAppendCount = 0
barcode.StructuredAppendIndex = 0
barcode.SetLeftSpace = 5
barcode.SetRightSpace = 5
barcode.SetTopSpace = 5
barcode.SetBottomSpace = 5
barcode.SetWidth = 80
barcode.SetHeight = 80
barcode.SetImageFormat = System.Drawing.Imaging.ImageFormat.Png
Dim image As Image = barcode.GenerateBarcode()
pictureBox1.Image = image
‘In addition to Bitmap object, you can also output barcode to a String, Stream object, Graphics object or byte array.
End Sub
End Class