Quick to convert number, text string to barcode using C#
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It is an easy job to encode simple barcode data message.
You can directly pass the encoding data message to the barcode property Data.
Here we will create a simple QR Code image file using C#.
Here is the QR Code generated using the above C# codes.
You can directly pass the encoding data message to the barcode property Data.
Here we will create a simple QR Code image file using C#.
- Firstly, create a new QRCode object, which allows you to create a QR Code barcode image with customized barcode settings.
- Set the QR Code encoding data as "QR Code"
- Call method drawBarcode() to create a new QR Code image file using C# code
QRCode barcode = new QRCode(); barcode.Data = "QR Code"; barcode.drawBarcode("C://Output//qrcode-quick-create.png");
Here is the QR Code generated using the above C# codes.
Now let's generate a Code 128 linear barcode in memory using C#.
Here is the Code 128 generated using the above C# codes.
- Create a new Linear object, which allows you to create any 1d/linear barcode type
- Set the barcode data as "ABC-123-abc"
- Set the barcode type as "BarcodeType.CODE128"
- Create a new Stream object, which will contain the Code 128 barcode data
- Call method drawBarcode() to create a new Code 128 barcode and save the barcode to the Stream object
Linear barcode = new Linear(); barcode.Data = "ABC-123-abc"; barcode.Type = BarcodeType.CODE128; Stream barcodeInStream = new MemoryStream(); barcode.drawBarcode(barcodeInStream);
Here is the Code 128 generated using the above C# codes.
Advanced barcode data encoding using C#
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A barcode symbol may encode numbers, plain text (ASCII characters), Unicode text, and industry standard (such as GS1 standard) data message.
The following content explains how to create 2d and linear barcodes with various text string formats encoded in your C# ASP.NET, Windows applications.
The following content explains how to create 2d and linear barcodes with various text string formats encoded in your C# ASP.NET, Windows applications.
How to Print Barcode with ASCII Non-printing Chars using C#?
However some special characters are impossible to
be entered using keyboard to a string directly, such as char 'CR' (Carriage Return).
In C# barcode generator library, it provides an easy solution for encoding these non-printable characters.
Here is an example to encode char 'CR' (Carriage Return) in Code 128 barcode using C#.
Here is an example to encode char 'CR' (Carriage Return) in Code 128 barcode using C#.
- Set property ProcessTilde to true.
- Convert non-printable char to '~ddd' format. Here ddd is the char ASCII Integer code in 3-digit. 'CR' should be converted to '~013'. Click to view all 128 ASCII character values
- Set property Data to '~013'
Here is the C# example source code:
Linear code128 = new Linear(); // encode non printable char '[CR]', between 'a' and 'b' code128.Data = "a~013bc"; // Barcode symbology type. Code 128 supports types: CODE128, CODE128A, CODE128B, CODE128C. code128.Type = BarcodeType.CODE128; code128.ProcessTilde = true;
Note: the non-printable chars will be encoded into barcode modules, but will not be displayed in the barcode text.
How to create barcode with Unicode text encoded using C#?
Instead of encoding ISO 8859-1 standard chars, you may need to encode other character sets, such as Arabic, Cyrillic, Greek, Hebrew.
And our C# Barcode Generator for .NET supports encoding these special characters through Unicode encoding.
The following are examples for encoding Unicode into QR Code, Data Matrix and PDF417.
It is really easly to create 2d barcode with Unicode text encoded using C# Barcode Library. Here we will explain how to generate QR Code with Unicode text
encoded using C# code.
Please note that once the "EncodeUnicodeText" property is true, the library will automatically apply the following settings
It is really easly to create 2d barcode with Unicode text encoded using C# Barcode Library. Here we will explain how to generate QR Code with Unicode text
encoded using C# code.
- Create a new QRCode object (Data Matrix, PDF-417 are also working)
- Set EncodeUnicodeText property to true
- Set the Data property with the Unicode text message, such as
- Utilize drawBarcode() method to print QR Code to an image file or create QRCode in memory
QRCode barcode = new QRCode(); barcode.EncodeUnicodeText = true; barcode.Data = "Unicode text message here"; barcode.drawBarcode("C://Output//qrcode-unicode-sample.png");
Please note that once the "EncodeUnicodeText" property is true, the library will automatically apply the following settings
- "ProcessTilde" will be changed to true
- "DataMode" will be changed to "QRCodeDataMode.Byte" for QR Code. For Data Matrix, the value will be "DataMatrixDataMode.Base256". For PDF-417, the value will be "PDF417DataMode.Byte"
The C# barcode library will use UTF8 encode for Unicode text during 2d barcodes generation. If you want to apply other text encode, you can try the following code
Here are the available options for TextEncoding enum
barcode.UnicodeEncoding = TextEncoding.UTF8;
- UTF8 (default encode)
- UTF7
- UTF32
- Unicode
- BigEndianUnicode
Create QR Code with binary data from Unicode text converted
You can also convert the Unicode text to binary data using UTF8 encodes in C#, and create QR Code with binary data using C#. Here are the details.
To encode Unicode text, you need process the Unicode characters first.
To encode Unicode text, you need process the Unicode characters first.
- Convert unicode text to byte array using UTF8 encoding or others
- Convert eacy byte value to three digits text with char '~' in the beginning
- Append all converted byte text into one single String object
You can use one of the following encoding to convert Unicode characters to byte array
- System.Text.Encoding.UTF8 (by default)
- System.Text.Encoding.UTF7
- System.Text.Encoding.UTF32
- System.Text.Encoding.Unicode
- System.Text.Encoding.BigEndianUnicode
Please note that your barcode reader software or scanner device must use the same encode to decode the barcode data.
Most mobile barcode scanner softwares are using UTF8 encode.
After the Unicode characters processed, you can easily generate barcode with Unicode characters encoded in C#.
After the Unicode characters processed, you can easily generate barcode with Unicode characters encoded in C#.
- Set the property Data with processed Unicode bytes string object
- Enable property ProcessTilde to true
- Set barcode data encode mode as Byte mode
QR Code with Unicode chacters in C#
QRCode barcode = new QRCode(); // It may encode any Unicode characters after converting them to bytes in UTF-8 encode. // And then, use Byte encodation to encode these byte data. String message = "สวัสดี"; byte[] bytes = Encoding.UTF8.GetBytes(message); StringBuilder sb = new StringBuilder(); foreach (byte b in bytes) sb.Append("~" + b.ToString().PadLeft(3, '0')); barcode.Data = sb.ToString(); barcode.ProcessTilde = true; barcode.DataMode = QRCodeDataMode.Byte; barcode.drawBarcode("C://Output//qrcode-unicode-sample.png");
Data Matrix with Unicode chacters in C#
DataMatrix barcode = new DataMatrix(); // It may encode any Unicode characters after converting them to bytes in UTF-8 encode. // And then, use Base256 encodation to encode these byte data. String message = "สวัสดี"; byte[] bytes = Encoding.UTF8.GetBytes(message); StringBuilder sb = new StringBuilder(); foreach (byte b in bytes) sb.Append("~" + b.ToString().PadLeft(3, '0')); barcode.Data = sb.ToString(); barcode.ProcessTilde = true; barcode.DataMode = DataMatrixDataMode.Base256; barcode.drawBarcode("C://Output//csharp-datamatrix-unicode.png");
PDF-417 with Unicode chacters in C#
PDF417 barcode = new PDF417(); // It may encode any Unicode characters after converting them to bytes in UTF-8 encode. // And then, use Byte mode to encode these byte data. String message = "早上好"; byte[] bytes = Encoding.UTF8.GetBytes(message); StringBuilder sb = new StringBuilder(); foreach (byte b in bytes) sb.Append("~" + b.ToString().PadLeft(3, '0')); barcode.Data = sb.ToString(); barcode.ProcessTilde = true; barcode.DataMode = PDF417DataMode.Byte; barcode.drawBarcode("C://Output//OnBarcode.com//csharp-pdf417-unicode-text.png");
How to encode binary (byte array) data into barcode using C# code?
Most of 2d barcode symbologies such as QR Code, Data Matrix, PDF-417 do support byte array data encoding. Using C# barcode library, you can
easily create barcodes with byte array data encoded in your C# program.
- Set the barcode data mode to byte
- Enable property ProcessTilde to true. Now the C# barcode library can process byte array data
- Convert each byte to '~ddd' format. For example, a byte '80' will be converted to '~080'.
- Set property Data with the converted bytes combined in string
- Generate barcode with the bytes data encoded
QRCode barcode = new QRCode(); String message = "abc"; byte[] bytes = Encoding.UTF8.GetBytes(message); StringBuilder sb = new StringBuilder(); foreach (byte b in bytes) sb.Append("~" + b.ToString().PadLeft(3, '0')); barcode.DataMode = QRCodeDataMode.Byte; barcode.ProcessTilde = true; barcode.Data = sb.ToString(); barcode.drawBarcode("C://Output//qrcode-data-in-bytes.png");
How to create barcode with add-on symbol using C#?
A two-digit or five-digit add-on symbol may be used in specific applications to accompany an EAN/UPC, ISBN, ISSN barcode.
The add-on symbol is positioned following the right Quiet Zone of the main barcode symbol.
The add-on symbol does not have an explicit check digit.
List of barcode symbols supporting two-digit or five-digit add-on symbol.
The add-on symbol does not have an explicit check digit.
List of barcode symbols supporting two-digit or five-digit add-on symbol.
- EAN-8
- EAN-13
- UPC-A
- UPC-E
- ISBN
- ISSN
OnBarcode barcode library supports barcode add-on symbols with the following properties.
The C# source code below explains how to create an EAN-13 barcode with two digits add-on. Here the add-on symbol height is 60% of the main symbol, and the space between two symbol is 30 pixels.
- Type. Barcode type for add-on barcode.
- SupData. Add-on data message. 2 or 5 digits.
- SupHeight. Add-on symbol height, % of the main symbol. The default is 0.8f (80% of the main symbol height).
- SubSpace. The space between tha main symbol and add-on symbol. The default is 15 pixel. The maximum space shall be 12X (property X is the bar module width).
The C# source code below explains how to create an EAN-13 barcode with two digits add-on. Here the add-on symbol height is 60% of the main symbol, and the space between two symbol is 30 pixels.
Linear barcode = new Linear(); barcode.Type = BarcodeType.EAN13_2; barcode.Data = "012345678912"; // 12 or 13 digits barcode.SupData = "01"; barcode.SupHeight = 0.6f; barcode.SupSpace = 30; barcode.drawBarcode("C://Output//barcode-sample-ean13-2-digit.png");
How to split a large data file into multiple barcodes in C#
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PDF417, Data Matrix, QR Code provide a mechanism for the data in a file to be split into blocks and be represented in more
than one barcode symbol.
In PDF417, it is named Macro PDF417. In Data Matrix and QR Code, it is called Structure Append.
Each barocde symbol shall contain additional control information to enable the original data file to be properly reconstructed, irrespective of the sequence in which the individual barcode symbols are scanned and decoded.
2D barcodes Data Matrix, PDF-417, QR Code support above feature. Check each barcode symbology guide page for details.
In PDF417, it is named Macro PDF417. In Data Matrix and QR Code, it is called Structure Append.
Each barocde symbol shall contain additional control information to enable the original data file to be properly reconstructed, irrespective of the sequence in which the individual barcode symbols are scanned and decoded.
2D barcodes Data Matrix, PDF-417, QR Code support above feature. Check each barcode symbology guide page for details.
C# Barcode Generation Guide for Linear & 2D Barcode Types
Top.NET Barcode Component for C# - Barcodes Generation
- C# Linear Barcodes Generation:
- C# 2D Barcodes Generation: Data Matrix, PDF417, QR Code, Micro PDF417, Micro QR Code
Summary
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Now you have learned how to install, upgrade C# Barcode Generator library in your .NET applications.
.NET developers can easily generate readable barcode images in various .NET framework projects,
like C#.NET Windows Forms, ASP.NET C# Web Service, C#.NET Crystal Reports and RDLC Reports applications.
More than twenty linear & 2d barcodes are supported by this mature C#.NET barcode generator tool.
If you are looking for complete guides to create barcodes in C# server side or in WinForms, navigate to pages below:
If you are looking for complete guides to create barcodes in C# server side or in WinForms, navigate to pages below:
- Tutorial for C# Barcode Generation - Generating batch barcode (linear & bidimensional) images in .NET projects using C#
- Tutorial for C# Barcode ASP.NET Generation - Streaming & creating barcodes in ASP.NET web applications (html) in C#
- Tutorial for C# Barcode WinForms Generation - Downloading barcode dll to encrypt barcode graphics in Windows Forms using C#
- Tutorial for C# Barcode Imaging Setting - Creating & printing barcodes and adjust image settings in Visual Studio using C#
