How to generate, print barcode image in C# WPF, Windows Application

How to generate, print barcode image label for Windows Application, WPF with free C# barcode example source code

Generate and Draw Linear & 2D Barcodes with best Windows Forms C# barcoding application

• Integrate advanced bar code labels generation functions into a single .NET WinForms DLL
• Written in C#, fully compatible with Visual Studio .NET Windows Forms programs
• Simple to generate & encode barcode images on windows form and WPF with free Visual C# example code
• Able to use C# code to generate GS1 compatible barcodes, including GS1 DataBar, GS1-128, ITF-14, Data Matrix, QR Code, etc
• Using C# class command to save generated bar code pictures in the memory or in image file format
• All encoded linear & 2d barcode images can be read by high resolution printer or thermal printer
• C# source code available with purchase of Developer License

1. C# Barcode Generation - Samples for programmatically generating barcode images using Visual C# in .NET Framework
2. C# Barcode ASP.NET - Samples for dynamically streaming barcodes in C# ASP.NET web applications / web sites
3. C# Barcode Imaging - Samples for creating multiple barcodes and adjust bar code image settings with C# code system
4. C# Barcode Data - Samples for generating GS1 barcode or encode Unicode (text or numbers) in barcode in C# projects

How to Create & Print Barcode in C#.NET desktop applications

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How to Encode & Draw Barcode Label Using C# Source Code

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1. Add .NET WinForms Barcode Library DLL to your Windows C# project reference.
2. Use OnBarcode.Barcode as the namespace and copy the following C# demo code your C#.NET class panel. Let's take Data Matrix as an example.

   // Create a .NET WinForms Data Matrix object
   DataMatrix datamatrix = new DataMatrix();

   // Set Data Matrix encoded data
   datamatrix.Data = ".NET WinForms C# Data Matrix";

   // Set Data Matrix data mode
   datamatrix.DataMode = DataMatrixDataMode.Auto;

   // Set Data Matrix barcode image size
   datamatrix.X = 3;
   datamatrix.LeftMargin = 6;
   datamatrix.RightMargin = 6;
   datamatrix.TopMargin = 6;
   datamatrix.BottomMargin = 6;

   // Print Data Matrix to gif image file and save it to C:\
   datamatrix.ImageFormat = System.Drawing.Imaging.ImageFormat.Gif;
   datamatrix.drawBarcode("C://winfroms-csharp-datamatrix.gif");

C#.NET Barcode Generation Tutorials for Supported Barcodes

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Barcode SDK for C#.NET - Barcode Image Generation

• Visual C# Linear Barcode Images:

Codabar	Code 11	Code 2 of 5 (Industrial 2 of 5)	Code 39	Code 93
Code 128	EAN-8	EAN-13	GS1-128 (UCC/EAN128)	GS1 DataBar (RSS)
Identcode	Intelligent Mail(OneCode)	Interleaved 2 of 5	ISBN	ISSN
ITF-14	Leitcode	MSI Plessey	PLANET	POSTNET
RM4SCC	UPC-A	UPC-E

• Visual C# 2D Barcode Images: Data Matrix, PDF417, QR Code, Micro PDF417, Micro QR Code

How to encode, generate non-printable chars (such as 'CR') in barcode images using c# .net winforms

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1. Set property ProcessTilde to true.
2. Convert non-printable char to '~ddd' format. Here ddd is the char ASCII Integer code. 'CR' should be converted to '~013'.
3. Set property Data to '~013'

How to encode, print GS1 data in barcodes using c# .net winforms

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1. EAN/UPC: UPC-A, UPC-E, EAN-13, and EAN-8 barcodes, and the two- and five-digit add-on symbols
2. ITF-14
3. GS1-128 (EAN-128)
4. GS1 DataBar
5. Composite Component symbols do not exist in isolation. The primary identification number is always encoded in the linear symbol and supplementary GS1 Application Identifier element strings are encoded in the two-dimensional (2D) component where they take up less space
6. Data Matrix
7. GS1 QR Code

How to encode, print non-English chars (such as Thai, Korean) in barcode images using c# .net winforms

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Prerequisites

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1. Visual Studio 2022
2. .NET 6.0 SDK
3. OnBarcode.Barcode.Common.dll

Tutorial: Create a new WinForm .NET Core app with barcode generator enabled using C#

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1. Create new WinForms Core desktop app

Start Visual Studio 2022 and select "Create a new project".

Select "Windows Forms App" in the dialog, and then press "Next" button.

Create a new project with name "OnBarcodeGeneratorWinFormsDotNetCoreDemo".



Select .NET 6.0, and then press "Create".

Now, all auto-generated files could be found in the WinForms project solution explorer.

2. Install Barcode Generator Library dll and NuGet Package

Add OnBarcode Barcode Generator C# library for WinForms Core DLL reference "OnBarcode.Barcode.Common.dll".





Right-click "Dependencies" in the Solution Explorer, and select "Manage NuGet Packages".

Select "Browse" and use the search control to find "System.Drawing.Common" from the package source "nugget.org".





Choose the version 6.0.0 or later to install the package.

Check "Packages" in the Solution Explorer to ensure the installation is success.

3. Design the user interface with WinForms controls added

Use Toolbox to add controls to the form "Form1".

Change the property Size of control "Form1" to "720, 480" in the Properties window first.



List of controls to add (total 12 controls)

• A Label with a TextBox for data message
• A Label with a TextBox for barcode width
• A Label with a TextBox for resolution
• A Label with a Button for fore color
• A Label with a Button for back color
• A Button for show barcode result
• A PictureImage

Step 1: add a Label control and TextBox control for data message





Change property Text of control "label1" to "Data Message:" and Location to "15, 33".



Change TextBox control name to "tbData", then set properties Text to "QRCode", Location to "125, 30", and Size to "200, 23".



Step 2: add Label and TextBoxe controls for barcode width and resolution.

Change property Text of control "label2" to "Width (inch):" and Location to "15, 62".



Change TextBox control name to "tbWidth", then set properties Text to "1.0", Location to "125, 59", and Size to "100, 23".



Change property Text of control "label3" to "Resolution (dpi):" and Location to "15, 91".



Change TextBox control name to "tbResolution", then set properties Text to "300", Location to "125, 88", and Size to "100, 23".



Now the Windows Form will be like:



Step 3: add Label and Button controls for fore color and back color.

Change property Text of control "label4" to "Fore Color:" and Location to "15, 121".



Change Button control name to "btForeColor", then set properties Text to "", and Location to "125, 117".



Change property Text of control "label5" to "Back Color:" and Location to "15, 150".



Change Button control name to "btBackColor", then set properties Text to "", and Location to "125, 146".



Form view after step 3.



Step 4: add Button and PictureBox controls for update and preview barcode on the form.

Change Button control name to "btShow", then set properties Text to "Show", and Location to "100, 225".



Change PictureBox control name to "pictureBoxPreview", then set properties Location to "331, 12", and Size to "361, 417".



Below is the final view of the Form.

4. Add behind code to the Form.

using OnBarcode.Barcode;

namespace OnBarcodeGeneratorWinFormsDotNetCoreDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            //  Initial controls
            this.btForeColor.BackColor = Color.Black;
            this.btBackColor.ForeColor = Color.White;
            updatePictureBox();
        }

        private void btForeColor_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                this.btForeColor.BackColor = colorDialog.Color;
                updatePictureBox();
            }
        }

        private void btBackColor_Click(object sender, EventArgs e)
        {
            ColorDialog colorDialog = new ColorDialog();
            if (colorDialog.ShowDialog() == DialogResult.OK)
            {
                this.btBackColor.BackColor = colorDialog.Color;
                updatePictureBox();
            }
        }

        private void btShow_Click(object sender, EventArgs e)
        {
            updatePictureBox();
        }

        private void updatePictureBox()
        {
            try
            {
                QRCode barcode = new QRCode();
                barcode.DataMode = QRCodeDataMode.Auto;
                barcode.Data = this.tbData.Text;
                barcode.AutoResize = true;
                barcode.UOM = UnitOfMeasure.INCH;
                barcode.BarcodeWidth = float.Parse(this.tbWidth.Text);
                barcode.BarcodeHeight = float.Parse(this.tbWidth.Text);
                barcode.Resolution = int.Parse(this.tbResolution.Text);
                barcode.ForeColor = this.btForeColor.BackColor;
                barcode.BackColor = this.btBackColor.BackColor;

                //  Note: Image in PictureBox would ignore resolution in Bitmap.
                this.pictureBoxPreview.Image = barcode.drawBarcode();
            }
            catch { }
        }
    }
}

5. Add Click event to all controls

Select "btForeColor" Button control in the Form and switch to Event tab in the Properties window, and then add Click event "btForeColor_Click".



Select "btBackColor" Button control, and then add Click event "btBackColor_Click".



Select "btShow" Button control, and then add Click event "btShow_Click".

6. It is done. Now press "Ctrl+F5" to run the project.

Screenshot for the Demo application.



Customize barcode settings and refresh the barcode image on the Windows Form.