Generate Code 128 Barcode with specified
Width and Height in C#
Step by step C# tutorial to create Code 128 barcode with target dimension size in C# apps
Using Free C# source code to generate Code 128 image labels for ASP.NET Web & Windows Applications
In this C# tutorial, you will learn how to generate
Code 128 barcode with your target image width and height in .NET ASP.NET, Windows applications.
- Quick to create and customize Code 128 dimension width, height
- Learn abount Code 128 symbol structure
- Code 128 dimension size calculation
How to create Code 128 barcodes using C#
Quick to generate Code 128 with specified size using C#
Here we will show you how to generate a Code 128 barcode with target width and height in C# project.
- Create an object of Linear, which supports all 1d barcode symbol generation, including Code 128, Code 39, EAN/UPC.
- Set Code 128 data message to property Data, and Set barcode type Type to BarcodeType.CODE128
- Here we will create Code 128 image in 250 pixels in width and 120 pixels in height through property BarcodeWidth and BarcodeHeight
- Call method drawBarcode() to generate Code 128 and print to an image file with specified image width and height
Linear barcode = new Linear();
barcode.Data = "Code-128";
barcode.Type = BarcodeType.CODE128;
barcode.BarcodeWidth = 250;
barcode.BarcodeHeight = 130;
barcode.drawBarcode("C://Output//code128-size-customization-sample.png");
Code 128 Symbol Structure
- W : the width of Code 128.
- C : the number of start, special, symbol check and stop characters plus the number of the
data characters not included in D (i.e. C=3 + special char +not double-density data char)
- X : the width of a module bar; Xmin=1 pixel
- Q : the width of the quiet zone; Qmin=10X
- D : the number of numeric data characters encoded in double density (Code Set C)
Setting Code 128 Barcode Size in C#
Basic information you should know
Code 128 barcode width, W (measured in pixel), including quiet zones, can be computed from the expression below:
W = 11X (C + D/2) + 2Q + 2X
Three Situations for Setting Code 128 Barcode Size in C#
Setting Code 128 barcode size in C# Code 128 Generator may have three situations:
Situation 1:
If you want to create a Code 128 with a minimum X, please do as below:
- Set the minimum value of X.
- Set the AutoResize option to be false.
- Customize other properties.
Eg1. Set in C# Code 128 generator:
code128.X = 4;
code128.AutoResize = false;
Other properties: default;
The generated Code 128 image is:
Situation 2:
If you want to generate a Code 128 with a fixed barcode image width (W), and try to draw maximum barcode module (X) as possible, please do as follows:
- Set the fixed value of barcode image width (W).
- Set the AutoResize option to be true.
- Customize other properties.
Eg2. Set in C# Code 128 generator:
code128.BarcodeWidth = 300;
code128.BarcodeHeight = 60;
code128.AutoResize = true;
Other properties: default;
The generated Code 128 image is:
In the above Code 128 image, the bar module (X) is 3 pixel, which is the maximum bar module.
Situation 3:
If you want to generate a Code 128 with minimum X and fixed barcode image width (W), please do as below:
- Set the values of minimum X and barcode image width (W).
- Set the AutoResize option to be false.
- Customize other properties.
Eg3. Set in C# Code 128 generator:
code128.X = 2;
code128.BarcodeWidth = 200;
code128.AutoResize = false;
Other properties: default;
The generated Code 128 image is:
Note that, once you have set bar module (X) value, there will be a minimum barcode image width defined by Code 128 ISO specification.
Code128 minimum barcode image width (W min) is:
= 11X (C + 2D/2) + 22X
So if your BarcodeWidth value is less than the minimum barcode width, the barcode generator component will reset BarcodeWidth value to the minimum barcode width value.
For example, you set:
code128.X = 2;
code128.BarcodeWidth = 100;
code128. Data = "1234";
code128.AutoResize = false;
Other properties: default;
Then Code 128 barcode minimum width (W min) is:
=11*2 ( 5 + 4/2 ) + 22*2
= 198 pixel
Now your BarcodeWidth setting is 100 pixel, which is less than the minimum barcode width, the component generated code 128 image will be like this.
If your BarcodeWidth setting is 250 pixel, which is larger than the minimum barcode width (198 pixel), the generated code 128 image will be like below. And extra 51 pixel space has been added to the left and right side of barcode image.
