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.NET EAN-8 Barcode Introduction
EAN-8 is also known as European Article Number 8, EAN-8 Supplement 5/Five-digit Add-On, EAN-8 Supplement 2/Two-digit Add-On, EAN-8+5, EAN-8+2, EAN8, EAN8+5, EAN13+2, UPC-8, GTIN-8, GS1-8, EAN/UCC-8.
An EAN-8 is a barcode and is derived from the longer European Article Number (EAN-13) code. It was introduced mainly to use on small packages where an EAN-13 barcode would be impractical; for example on cigarettes, pencils even though not used very common and chewing gum packets.
EAN-8 is a shortened version of the EAN-13 code. It includes a 2 or 3 digit country code, 4 or 5 data digits (depending on the length of the country code), and a checksum digit. The primary purpose of the EAN-8 is to be used on small packages, so the code must use as little space as possible.
EAN-8 codes are most common in the UK, and as such many UK-based companies use blocks of EAN-8 codes for own-brand products which are only sold in their stores. These are formatted as 1xxx xxxx.
Sample of an EAN-8 Barcode
EAN-8 Encoding Data Scope
EAN8 Barcode for .NET, ASP.NET supports:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
How to Generate EAN-8 Barcode Image in IIS without Visual Studio .NET?
Under downloaded trial package, copy barcode folder to your IIS folder, e.g. C:\Inetpub.
Create a new virtual directory in IIS, named barcode, and link to the above "barcode" folder.
Restart IIS.
To test your installation, open your web browser and navigate to: http://YourDomain:port/barcode/linear.aspx?Type=14&Data=1234567
To create barcode image in your aspx or html page, you need pass the url to IMG tag src value. For example: <img src="http://YourDomain:port/barcode/linear.aspx?Type=14&Data=1234567" /> Using this method, it will not generate any barcode images in your IIS server side.
How to Generate EAN-8 Barcode Image through ASP.NET Web Form Control?
Install .NET Barcode Controller to your ASP.NET project.
Add Reference BarcodeLib.Barcode.ASP.NET.dll to your project. Do not copy the dll to the bin directory, Visual Studio will do so, during project compilation time.
Add barcode library to your Visual Studio Toolbox.
Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
Right click Toolbox, click menu Choose Items...
Goto .NET Framework Components tab.
If no BarcodeLib component found, click Browse... button and select BarcodeLib.Barcode.ASP.NET.dll file.
Then sort "Namespace" column, you will find 4 components from BarcodeLib.Barcode.
Check component LinearASPNET, and its namespace is BarcodeLib.Barcode.
Click "OK" button, you will find four components under "General": LinearASPNET.
Go to "barcode" folder in the trial package, copy file "linear.aspx" to the same folder as your aspx page, which will generate barcodes.
You can drag LinearASPNET on your aspx page in design view, change barcode setting through properties window.
Run the project, you will find barcode images generated in your aspx pages.
How to Generate EAN-8 Barcode Image through .NET Windows Form Control in C# or VB.NET?
Add Reference BarcodeLib.Barcode.WinFroms.dll to your project. Do not copy the dll to the bin directory, Visual Studio will do so, during project compilation time.
In your .NET windows project, right click mouse over Refereces in your Solution Explorer window. Then click menu "Add Reference ...".
Add BarcodeLib.Barcode.WinFroms.dll to your project.
Add barcode library to your Visual Studio Toolbox.
Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
Right click Toolbox, click menu Choose Items...
Goto .NET Framework Components tab.
If no BarcodeLib component found, click Browse... button and select BarcodeLib.Barcode.WinFroms.dll file.
Then sort "Namespace" column, you will find 4 components from BarcodeLib.Barcode.
Check component LinearWinForm, and its namespace is BarcodeLib.Barcode.
Click "OK" button, you will find the control under "Common Controls": LinearWinForm.
Now you can see the component displayed on Toolbox. You can drag LinearWinForm on your form, change barcode setting through properties widnow.
How to Generate EAN-8 Barcode Image in .NET class?
Add Reference BarcodeLib.Barcode.ASP.NET.dll or BarcodeLib.Barcode.WinFroms.dll to your .NET project (ASP.NET website, Forms, any .NET project). In your .NET class:
BarcodeLib.Barcode.Linear barcode = new BarcodeLib.Barcode.Linear(); barcode.Type = BarcodeType.EAN8;
// generate barcode and output to Bitmap object Bitmap barcodeInBitmap = barcode.drawBarcode();
// generate barcode and output to HttpResponse object HttpResponse response = ...; barcode.drawBarcode(response);
// generate barcode and output to Stream object Stream stream = ...; barcode.drawBarcode(stream);
Above code written in C# 2005
How to Save EAN-8 Barcode Image using .NET Barcode Generator Windows Control?
In Windows Controller, just call method SaveAsImage(string filename). e.g. SaveAsImage("C:\barcode.gif");
EAN-8 Barcode Property Settings
Set the Type property to BarcodeType.EAN8 or BarcodeType.EAN8_2 or BarcodeType.EAN8_5. Web Stream URL Parameter: Type. Value: 14 (EAN8), 15 (EAN8_2), 16 (EAN8_5). Sample: &Type=14
Set the Data property with the value to encode. Type is string. User should only provide 7 digits, and DO NOT include last digit checksum character. Web Stream URL Parameter: Data.
Valid Data Scope:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9
Valid Data Format: 7 digits. There are totally 8 digits in EAN-8 barcode, first 7 digits are barcode value, and last digit is the checksum digit, which is generated by barcode library automatically.
Sample: barcode.Data = "1234567"
Set the SData property with the supplement value to encode. Type is string. Provide 2 digits for barcode type EAN8_2, and provide 5 digits for type EAN8_5. Sample for BarcodeType.EAN8_2: barcode.SData = "12". Sample for BarcodeType.EAN8_5: barcode.SData = "12345". Web Stream URL Parameter: SData.
Set the SSeparation property, the space between main barcode image and the supplement barcode image. Type is float. Default is 12. Web Stream URL Parameter: SSeparation.
AddCheckSum property is not applied here. Barcode Library will always add a check character in the last digit (modulo 10).
Barcode Size Settings.
Set property UOM (Unit of Measure) for properties BarWidth, BarHeight, LeftMargin and TopMargin. Valid values are UnitOfMeasure.Pixel (0), UnitOfMeasure.CM (1), UnitOfMeasure.Inch (2). Default is UnitOfMeasure.Pixel (0). Web Stream URL Parameter: UOM. Valid values are: 0, 1, 2.
Set the ImageWidth and ImageHeight properties. Both types are float. BarWidth default is 0 pixel. BarHeight default is 0 pixel. Web Stream URL Parameter: ImageWidth and ImageHeight.
Set the BarWidth (for bar cell width) and BarHeight (for bar cell height) properties. Both types are float. BarWidth default is 1 pixel. BarHeight default is 80 pixel. Web Stream URL Parameter: BarWidth and BarHeight.
Set the LeftMargin, RightMargin, TopMargin and BottomMargin properties. Types are all float. Default are 10. Web Stream URL Parameter: LeftMargin, RightMargin, TopMargin, BottomMargin.
Set the ResizeImage property to "true" and our component will resize the barcode image if manual setting is invalid. Type is bool. Default is false. Web Stream URL Parameter: ResizeImage.
Set the Resolution property (Value is expressed in DPI - Dots per inch). Type is int. Default is 96 dpi. Web Stream URL Parameter: Resolution.
Set text style in barcode image.
Set the ShowText properties. If ShowText is True, barcode data will be displayed with the barcode. Type is bool. Default is True. Web Stream URL Parameter: ShowText. Valid values are: "true", and "false".
Set the TextFont property. The font used to display text in barcode image. Type is System.Drawing.Font. Default is new Font("Arial", 9f, FontStyle.Regular). Web Stream URL Parameter: TextFont. Value format: [font name]|[font size]|[font style]. Sample Values: "Arial|12|Bold,Underline"
Set Color Related properties.
Set the BackgroundColor property. Barcode background color can be changed. Type is System.Drawing.Color. Default is BackgroundColor = Color.White. Web Stream URL Parameter: BackgroundColor.
Set the BarColor property. Barcode bars color can be changed. Type is System.Drawing.Color. Default is BarColor = Color.Black. Web Stream URL Parameter: BarColor.
Set the TextFontColor property. Barcode human-readable data text color can be changed. Type is System.Drawing.Color. Default is TextFontColor = Color.Black. Web Stream URL Parameter: TextFontColor.
Set the ImageFormat property for barcode image type.
Type is System.Drawing.Imaging.ImageFormat. Default value is ImageFormat.Png. Web Stream URL Parameter: ImageFormat. Valid values are: gif, jpeg, png, bmp, tiff.
Set Rotate property, if you want to rotate barcode image. Valid values are as below. Default Value is 0 (RotateOrientation.BottomFacingDown). Web Stream URL Parameter: Rotate. Valid values are: 0, 1, 2, 3.
