Generating Barcode Code-128 in .NET is one of the functions in OnBarcode's .NET Barcode Generators, which supports creating & printing Code-128 and 30+ other linear & 2D bar codes for C#, VB.NET & ASP.NET applications.

OnBarcode develops several .NET Barcode Generation components for different .NET development environments:

Barcode Generation in ASP.NET - Creating barcodes in ASP.NET Web applications
Barcode Generation in Windows Forms - Printing barcodes in C#, VB.NET Windows Forms applications
Barcode Generation in Reporting Service - Drawing barcodes in Microsoft Reporting Service 2005 & 2008

 

.NET Code 128 Generator - Barcode Code-128 Introduction

Code 128 is a very high-density barcode symbology. (A special version of it called GS1-128 is used extensively world wide in shipping and packaging industries.) It is used for alphanumeric or numeric-only barcodes.

 

.NET Code 128 Generation - Code-128 Valid Data Scope

.NET Code 128 Generator encodes:

• all 128 characters of ASCII
  
  
• values 128-255 in accordance with ISO 8859-1. There are referred to as extended ASCII.

 

Generating barcode Code-128 in C# Class example (C# Source Code to Create Code-128 barcodes)

	        Linear code128 = new Linear();
	        code128.Type = BarcodeType.CODE128;
	        code128.Data = "0123456789";
	        code128.X = 1;
	        code128.Y = 60;
	        
	        // Generate Code-128 and encode barcode to gif format
	        code128.Format = ImageFormat.Gif;
	        code128.drawBarcode("c#-code128.gif");
	        
	        // Print Code-39 128 C# Bitmap object
	        Bitmap code128Bitmap = code128.drawBarcode();

Generating barcode Code-128 in VB.NET Class example

	        Dim code128 As OnBarcode.Barcode.Linear
	        code128 = New OnBarcode.Barcode.Linear()
	        code128.Type = OnBarcode.Barcode.BarcodeType.CODE128
	        code128.Data = "0123456789"
	        code128.X = 1
	        code128.Y = 60
	        
	        // Generate Code-128 and encode barcode to png format
	        code128.Format = ImageFormat.Png
	        code128.drawBarcode("vbnet-code128.png")
	        
	        // Print Code-128 to vb.net Bitmap object
	        Dim code128Bitmap As Bitmap
	        code128Bitmap = code128.drawBarcode();

 

• Under demo package, copy barcode folder and its contents to your IIS, and create a new virtual directory.
  
  
• Restart IIS, navigate to http://YourDomain:Port/barcode/linear.aspx?DATA=0123456789&TYPE=7
  
  
• To create barcode Code 128 image in html or aspx pages, you can insert a image tag (img) into your page.
  For example, <img src="http://YourDomain:Port/barcode/linear.aspx?DATA=0123456789&TYPE=7" />
  
  

 

Creating barcode Code-128 in C# Class example

	        Linear code128 = new Linear();
	        code128.Type = BarcodeType.CODE128;
	        code128.Data = "0123456789";
	        code128.ShowText = true;
	        
	        // Create Code-128 and encode barcode to Jpeg format
	        code128.Format = ImageFormat.Jpeg;
	        code128.drawBarcode("C://csharp-code128.jpg");

Creating barcode Code-128 in VB.NET Class example

        	Dim code128 As OnBarcode.Barcode.Linear
        	code128 = New OnBarcode.Barcode.Linear()
        	code128.Type = OnBarcode.Barcode.BarcodeType.CODE128
        	code128.Data = "0123456789"
        	code128.ShowText = true
        	
        	// Create Code-128 and encode barcode to Jpeg format
	        code128.Format = ImageFormat.Jpeg
	        code128.drawBarcode("C://vbnet-code128.jpg")

 

To draw & print barcode Code-128 to C# objects:

        	public void drawBarcode(Graphics graphics);

        	public void drawBarcode(string filename);

        	public Bitmap drawBarcode();

        	public void drawBarcode(Stream fileStream);

To draw & print barcode Code-128 to VB.NET objects:

        	Public Sub drawBarcode(ByRef graphics As Graphics)

        	Public Sub drawBarcode(ByVal filename As String)

        	Public Function drawBarcode() As Bitmap

        	Public Sub drawBarcode(ByRef fileStream As Stream)

 

1. Add OnBarcode.Barcode.WinForms.dll to .net project reference
   
   
2. Add .NET Barcode to .NET Visual Studio Toolbox
   
   
   1. Right click .NET Visual Studio Toolbox, select menu Choose Items...
      
      
   2. In "Choose Toolbox Items" form, click button "Browse...", and select dll OnBarcode.Barcode.WinForms.dll
      
      
   3. After selection, you will find four items under "Components" section: LinearWinForm, DataMatrixWinForm, PDF417WinForm, and QRCodeWinForm.

 

1. Add OnBarcode.Barcode.ASPNET.dll to asp.net project reference
   
   
2. Add .NET Barcode to .NET Visual Studio Toolbox
   
   
   1. Right click .NET Visual Studio Toolbox, select menu Choose Items...
      
      
   2. In "Choose Toolbox Items" form, click button "Browse...", and select dll OnBarcode.Barcode.ASPNET.dll
      
      
   3. After selection, you will find four items under "Components" section: LinearWebForm, DataMatrixWebForm, PDF417WebForm, and QRCodeWebForm.

 

Category	Class Properties	WebStream Properties	Default	Comments
Basic	Data	DATA	"12345"	value to encode
	Type	TYPE	BarcodeType.CODE128 (7)	linear barcode type, default is Code128. Code-128 type values are: BarcodeType.CODE128 (7), BarcodeType.CODE128A (8), BarcodeType.CODE128B (9), BarcodeType.CODE128C (10),
	AddCheckSum	ADD-CHECK-SUM	true	AddCheckSum property is not applied here. .NET Barcode Library will always add a check character between encoded data and stop character.
Code 128 Special	ProcessTilde	PROCESS-TILDE	false	Set the processTilde property to true, if you want use the tilde character "~" to specify special characters in the input data. Default is false. ~NNN: is used to represent the ASCII character with the value of NNN. NNN is from 000 - 255.
	FNC1	FNC1	FNC1.FNC1_NONE (0)	valid values are: FNC1.FNC1_NONE (0), FNC1.FNC1_1ST_POS (1), FNC1.FNC1_2ND_POS (2)
	ApplicationIndicator	AI	0	-
Size Related	UOM	UOM	UnitOfMeasure.PIXEL (0)	Unit of meature for all size related setting in the library. Valid values: UnitOfMeasure.PIXEL (0), UnitOfMeasure.CM (1), UnitOfMeasure.INCH (2)
	X	X	1	width of barcode module (narrow bar), default is 1 pixel
	Y	Y	60	barcode module height, default is 60 pixel
	BarcodeWidth	BARCODE-WIDTH	0	barcode image width
	BarcodeHeight	BARCODE-HEIGHT	0	barcode image height
	LeftMargin	LEFT-MARGIN	0	image left margin
	RightMargin	RIGHT-MARGIN	0	image right margin
	TopMargin	TOP-MARGIN	0	image top margin
	BottomMargin	BOTTOM-MARGIN	0	image bottom margin
	Resolution	RESOLUTION	72	in DPI
	Rotate	ROTATE	Rotate.Rotate0 (0)	valid values: Rotate.Rotate0 (0), Rotate.Rotate90 (1), Rotate.Rotate180 (2), Rotate.Rotate270 (3)
Text & Color	ShowText	SHOW-TEXT	true	If true, display barcode data text, otherwise do not display.
	ShowCheckSumChar	SHOW-CHECK-SUM-CHAR	true	If true, display the check sum character in the end of data, if there is a check sum.
	TextFont	TEXT-FONT	Arial, Plain, 11	Barcode text font style. default is: new Font("Arial", 9f, FontStyle.Regular); Using website, using: &TEXT-FONT=Arial|9|regular
	TextMargin	TEXT-MARGIN	6	Space between barcode and barcode data text, default is 6 pixel
In WebStream query string, please use int value for Enums, "true" and "false" for bool.