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Code 128 Barcode for .NET, ASP.NET

It is also known as ANSI/AIM 128, ANSI/AIM Code 128, USS Code 128, Uniform Symbology Specification Code 128, Code 128 Code Set A, Code 128 Code Set B, Code 128 Code Set C, Code 128A, Code 128B, Code 128C

Quick Navigate
  1. Barcode Introduction
  2. Encoding Data Scope
  3. How to Generate Barcode Image in IIS without Visual Studio .NET?
  4. How to Generate Barcode Image through Web Controller in ASP.NET?
  5. How to Generate Barcode Image through Windows Controller in .NET?
  6. How to Generate Barcode Image in .NET class?
  7. How to Save Barcode Image?
  8. Barcode Property Settings
For trial version only, we will randomly print message BarcodeLib.com or Trial on the generated barcode image.
1. Barcode Introduction
Code 128 is a very effective, high-density symbology which permits the encoding of alphanumeric data. The symbology includes a checksum digit for verification, and the bar code may also be verified character-by-character verifying the parity of each data byte. This symbology has been widely implemented in many applications where a relatively large amount of data must be encoded in a relatively small amount of space. It's specific structure also allows numeric data to be encoded at, effectively, double-density.
Code 128 Code Sets
Code 128 Special characters
The last seven characters of Code Sets A and B (character values 96 - 102) and the last three characters of Code Set C (character values 100 - 102) are special non-data characters with no ASCII character equivalents, which have particular significance to the bar code reading device.

Sample of a Code 128 Barcode
2. Encoding Data Scope
Code 128 Barcode for .NET, ASP.NET supports:
3. How to Generate Barcode Image in IIS without Visual Studio .NET?
  1. Copy folder barcode from your downloaded package, to your IIS folder, e.g. C:\Inetpub.
  2. Create a new virtual directory, named barcode.
  3. Restart IIS.
  4. Test your installation, goto http://YourDomain:port/barcode/linear.aspx?Type=CODE128&Data=12345678
  5. To create barcode image in your ASP.NET application, you can pass the url to IMG tag src value. For example, <img src="http://YourDomain:port/barcode/linear.aspx?Type=CODE128&Data=12345678" />
4. How to Generate Barcode Image through Web Controller ASP.NET?
  1. Integrate Barcode Controller to your ASP.NET project.
    1. Copy BarcodeLib.Barcode.dll to the folder bin of your web application the barcodes are needed for.
    2. Copy linear.aspx file to your web application.
  2. Add barcode library to your Visual Studio Toolbox.
    1. Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
    2. Right click Toolbox, click menu Choose Items...
    3. Goto .NET Framework Components tab.
    4. Check component LinearWebForm, and its namespace is BarcodeLib.Barcode.Linear
    5. If no component found, click Browse... button and select BarcodeLib.Barcode.dll file.
  3. Now you can see the component displayed on Toolbox. You can drag LinearWebForm on your aspx page, change barcode setting through properties window.
5. How to Generate Barcode Image through Windows Controller in .NET?
  1. Add Reference BarcodeLib.Barcode.dll to your project. Do not copy the dll to the bin directory, Visual Studio will do so, during project compilation time.
    1. In your .NET windows project, right click mouse over Refereces in your Solution Explorer window. Then click menu "Add Reference ...".
    2. Add BarcodeLib.Barcode.dll to your project.
  2. Add barcode library to your Visual Studio Toolbox.
    1. Open Toolbox in Visual Studio. Click menu View, and check submenu Toolbox.
    2. Right click Toolbox, click menu Choose Items...
    3. Goto .NET Framework Components tab.
    4. Check component LinearWinForm, and its namespace is BarcodeLib.Barcode.Linear
    5. If no component found, click Browse... button and select BarcodeLib.Barcode.dll file.
  3. Now you can see the component displayed on Toolbox. You can drag LinearWinForm on your form, change barcode setting through properties widnow.
6. How to Generate Barcode Image in .NET class?
  1. Add Reference BarcodeLib.Barcode.dll to your .NET project (ASP.NET website, Forms, any .NET project)
    In your .NET class.
    BarcodeLib.Barcode.Linear.Linear barcode = BarcodeLib.Barcode.Linear.Linear();
    barcode.Data = "your barcode data";
    // other barcode settings.
                            
    // save barcode image into your system
    barcode.drawBarcode("c:/barcode.gif");

* Please set properties UOB and Resolution, before you set any image size related properties like barWidth, margin.
7. How to Save Barcode Image?
In Windows Controller, just call method SaveAsImage(string filename). e.g. SaveAsImage("C:\barcode.gif");
8. Barcode Property Settings