VB.NET Code 128 Generator Introduction
Top
Code 128, also known as ANSI/AIM 128, ANSI/AIM Code 128, USS Code 128, Uniform Symbology Specification Code 128, is a very capable linear barcode of excellent density, high reliability.
Using VB.NET Code 128 Generator to create Code 128 barcodes in VB.NET program is a simple and easy job.VB.NET Code 128 Generator control is easy to install with a single .NET Barcode generation control. It is easy to generate Code 128 barcodes in VB.NET class with detailed VB.NET Code 128 settings document and complete demo for Code 128 generation in VB.NET provided in this article.
Code 128 Generators
OnBarcode provides several Code 128 Generator components and software, including Code 128 Generator for C#, Code 128 Generator, Code 128 Generator for .NET, Code 128 Generator for Java, Code 128 Generator for ASP.NET.
How to create, print Code 128 barcode in VB.NET?
Top
Here we will generate a Code 128 linear (1D) barcode, a high-density alphanumeric symbology, for Windows Forms and WPF desktop applications.
The vb.net example below initializes a linear barcode generator, sets the barcode type to Code 128, assigns the encoding data, and exports the finished barcode as a PNG image file.
The vb.net example below initializes a linear barcode generator, sets the barcode type to Code 128, assigns the encoding data, and exports the finished barcode as a PNG image file.
Dim barcode = New Linear() barcode.Type = BarcodeType.CODE128 barcode.Data = "Code 128" barcode.drawBarcode("C://Output//vb-net-code128-how-to-create.png")
How to create, customize Code 128 barcode with specified dimension size in VB.NET?
Top
The following vb.net code demonstrates how to print a custom-sized Code 128 linear (1D) barcode for Windows Forms and WPF desktop applications.
Apply the fixed width and height dimensions in pixels using property
Apply the fixed width and height dimensions in pixels using property
BarcodeWidth and BarcodeHeight.
Dim barcode = New Linear() barcode.Type = BarcodeType.CODE128 barcode.Data = "Code 128" barcode.BarcodeWidth = 300 barcode.BarcodeHeight = 200 barcode.drawBarcode("C://Output//vb-net-code128-size.png")
Remove Code 128 minimum quiet zones
The following VB.NET code snippet generates a Code 128 linear (1D) barcode without mandatory quiet zones for VB.NET Windows Forms and WPF desktop applications.
- Disables the automatic minimum quiet zone (blank margin) around the Code 128 barcode in the rendering process. This setting removes the standard blank border required by symbology specifications.
Note: Disabling quiet zones may cause Code 128 barcodes scanning failures in production environments. Quiet zones are required by Code 128 barcode standards.
Dim barcode = New Linear() barcode.Type = BarcodeType.CODE128 barcode.Data = "Code 128" barcode.BarcodeWidth = 300 barcode.BarcodeHeight = 200 barcode.IsMinQuietZoneApplied = False barcode.drawBarcode("C://Output//vb-net-code128-size-no-quiet-zone.png")
How to print, customize Code 128 barcode in VB.NET?
TopCustomize Code 128 printed text label
Here we will explain how to generate and print a Code 128 linear (1D) barcode with fully customized human-readable text using VB.NET.
The following VB.NET source code will configure Code 128 barcode text margin and font style, then exports the styled Code 128 barcode as a PNG image file.
The following VB.NET source code will configure Code 128 barcode text margin and font style, then exports the styled Code 128 barcode as a PNG image file.
- Use propery
TextMarginto set a vertical margin of 30 pixels between the Code 128 barcode bars and the human-readable text below it. - Use propery
TextFontto create and assign a custom OCR-B font with size 18 and bold style for the barcode's human-readable text.
OCR-B is the GS1 industry-standard recommended font for barcode text, ensuring optimal readability in VBs.NET desktop applications.
Dim barcode = New Linear() barcode.Type = BarcodeType.CODE128 barcode.Data = "Code 128" barcode.TextMargin = 30 barcode.TextFont = New Font("ocr-b", 18, FontStyle.Bold) barcode.drawBarcode("C://Output//vb-net-code128-text.png")
Hide Code 128 barcode text label
Set property
ShowText to false to hide Code 128 barcode text label in the image.
barcode.ShowText = False
Customize Code 128 barcode colors in VB.NET
Here we will generate a customized Code 128 barcode with custom foreground, background, and text colors for Windows Forms and WPF desktop applications.
Colored Code 128 image generated in visual basic class
Colored Code 128 image printed on VB.NET Windows Forms
- Use propery
ForeColorto set the foreground color (barcode bars) to red, overriding the default black color for the barcode modules. - Use propery
BackColorto configure the background color of the entire barcode area to light blue for visual enhancement. The background color fills the whitespace and margins around the Code 128 barcode. - Use propery
TextColorto define the color of the human-readable text below the barcode as red to match the barcode bars.
Dim barcode = New Linear() barcode.Type = BarcodeType.CODE128 barcode.Data = "Code 128" barcode.ForeColor = Color.Red barcode.BackColor = Color.LightBlue barcode.TextColor = Color.Red barcode.drawBarcode("C://Output//vb-net-code128-barcode-color.png")
Colored Code 128 image generated in visual basic class
Colored Code 128 image printed on VB.NET Windows Forms
Common Asked Questions
What is the barcode Code 128 text code?
Code 128 barcode is a high-density 1d barcode symbology, which encodes digits, letters, control characters, and full ASCII 128 characters.
Using VB.NET barcode generator library, you can easily encode, create, customize and print Code 128 barcode images in
com.onbarcode.barcode.Code128 class in
Visual Basic .NET class library, console, WinForms, WPF windows applications.
What is Code 128 barcode used for?
Code 128 barcode is a common linear barcode type used in:
- Food and non-food industries
- Shipping and packing industry
- Health, public sector and government bodies
What is the check digit for code 128?
Code 128 barcode contains a mandatory check digit (checksum) character, which is based on module 103 (mod 103).
Using VB.NET barcode library API, the generator software will automatically calculate the check character and insert into the Code 128 barcode in VB.NET projects.
What is Code 128 barcode maximum length?
The Code 128 ISO standard does not define the maximum number of characters in a single Code 128 barcode.
However some Code 128 standards will provide the limits. GS1-128 has limits the maximum length of Code 128 data to 48 characters.
Using VB.NET Barcode library, you will encode and generate ISO standard Code 128 and application approved Code 128 barcodes, such as GS1-128 in Visual Basic .NET class library, console, WinForms, WPF windows applications.
However some Code 128 standards will provide the limits. GS1-128 has limits the maximum length of Code 128 data to 48 characters.
Using VB.NET Barcode library, you will encode and generate ISO standard Code 128 and application approved Code 128 barcodes, such as GS1-128 in Visual Basic .NET class library, console, WinForms, WPF windows applications.
How to scan, read Code 128 barcodes?
You can download and install OnBarcode free Code 128 barcode scanner software, or use barcode scanner device, or 3rd party apps installed on phone to read and scan the Code 128 barcodes.
OnBarcode provides VB.NET Barcode Reader library to scan, read Code 128 and other 2d, 1d barcodes in VB.NET application.
Also you can use the OnBarcode free Code 128 barcode scanner software to decode
Code 128 barcode images.
Is Code 128 barcode better than Code 39?
Both Code 128 and Code 39 are popular linear barcode symbologies.
Code 128 is more compact than Code 39, supporting more data to be encoded in a smaller space.
VB.NET Barcode library allows VB.NET developers to encoding and printing both Code 128 and Code 39 in Visual Basic .NET class library, console, WinForms, WPF windows applications.