- Create high quality ISSN Png, Gif, Jpeg, Tiff, or Bmp files in .NET projects using VB.NET
- Provide properties X and Y to set the width and height of the module bar
- Draw adjustable supplement barcode
- Support the width setting of surrounding margins
- Support the width and height setting of the whole ISSN image
- Provide cm, inch, and pixel as the unit of measure
- Capable of printing ISSN with minimum X
- Also be capable of drawing maximum X in a fixed ISSN image width
ISSN, is also named as International Standard Serial Number, ISSN+2, ISSN+5, ISSN Supplement 2 (Two-digit Add-On), ISSN Supplement 5 (Five-digit Add-On). More details about ISSN in KA.Barcode Generator for VB.NET: Settig ISSN Image in VB.NET
and ISSN Encoded Data in VB.NET
ISSN VB.NET Generator Related Product Software
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ISSN Size Setting Introduction
The width of ISSN barcode image is influenced by the Parameters in the following table.
||The width of the ISSN image
|Module Bar Width (X)
||The width of the module bar in ISSN
||X ≥ 1 pixel
|Supplement Barcode Space
||The space between the main barcode and the supplement barcode; always measured in pixel
|Left Quiet Zone Width (Q1)
||The space between the left edge of the image and the leftmost bar; Q1= 10 X + Left Margin Width
||Q1 ≥ 10X
|Right Quiet Zone Width (Q2)
||The space between the right edge of the image and the rightmost bar; Q2= 10 X + Right Margin Width
||Q2 ≥ 10X
Supplement note: the quantity of data characters also has an influence over the width of the barcode. See VB.NET ISSN Size Setting - Image Width Setting.
The height of ISSN barcode image is made up by Top Margin width, Bottom Margin width, Bar Height, space between barcode and text, and the height of Text.
|Image Height (H)
||The height of the image
||H ≥ 5mm or 15%W
|Bar Height (Y)
||The height of the bar
|Supplement Barcode Height (sY)
||The height of bars in supplement barcode;
||0 < s < 1
|Top Margin Width
||The height of the top margin
|| ≥ 0
|Bottom Margin Width
||The height of the bottom margin
||The height of the human readable text font
||The space between symbol and text
In the following section, you will see how to make changes to these Parameters in .NET projects using VB.NET.
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How to Use VB.NET ISSN Generator Size Setting Properties
VB.NET ISSN Generator provides VB.NET developers with a full set of properties for ISSN size setting.
Input the following VB Code to use VB.NET ISSN Generator where ISSN bar code image is needed.
Dim issn As KeepAutomation.Barcode.Bean.BarCode
issn = New KeepAutomation.Barcode.Bean.BarCode()
issn.Symbology = KeepAutomation.Barcode.Symbology.ISSN
Input a string value for CodeToEncode, which will be encoded as data in your ISSN. Pay attention to the data encoding instruction for ISSN.
issn.CodeToEncode = "123456789"
Property BarcodeUnit is in control of unit of measure. Before setting the bar width and image size, you should know for sure all the properties in the coming passages are based on the unit of measure. BarcodeUnit defaults as Pixel, and you can change it to cm or inch.
issn.BarcodeUnit = BarcodeUnit.Pixel
Property X (Float; Default: 1) is used in ISSN module bar width setting. Try to set X using VB.NET code as follows:
issn.X = 2
Now, the width of a bar in ISSN has been changed from 1 pixel (as default) to 2 pixel. You can make it even greater if wider bars are in need.
Property Y (Float; Default: 50) sets the bar height of the ISSN.
issn.Y = 40
The width of bars in ISSN has been changed from 50 pixels (as default) to 40 pixels. You can make it even greater or smaller.
SupplementHeight and SupplementSpace
If supplement barcode (also known as add-on symbol) is needed to accompany ISSN, please change the value of Symbology to ISSNSup2 or ISSNSup2, as shown in the following table.
issn.Symbology = KeepAutomation.Barcode.Symbology.ISSNSup2;
issn.Symbology = KeepAutomation.Barcode.Symbology.ISSNSup5;
The height of the supplement barcode is controlled by property SupplementHeight (Float; Default: 0.8).
issn.Y = 40
issn.SupplementHeight = 0.6
if the value of SupplementHeight is 0.6, the height of the supplement barcode is the 0.6 times of Y value, which is 24 pixel in above example.
The space between the main barcode and the supplement barcode is controlled by property Supplementspacee (Float; Default: 15 pixels). Note that the width of the supplement space is always measured by unit pixel.
issn.SupplementSpace = 10
In above example, the actual space between the main barcode and the supplement barcode is 10 pixels.
BarCodeHeight and BarCodeWidth
VB.NET ISSN Generator is also equipped with functional properties BarCodeHeight (Float; Default: 0) and BarCodeWidth (Float; Default: 0) to set the size of the whole ISSN bar code image.
issn.BarCodeHeight = 70
issn.BarCodeWidth = 175
Note: If the setting of image size conflict with the settings in bar width or bar height, you can enable AutoResize to make the generated ISSN compatible with ISSN barcode specification.
TopMargin, BottomMargin, LeftMargin, and RightMargin
ISSN VB.NET Generator will generate a quiet zone at each end of the ISSN symbol automatically. The auto-generated quiet zone is 10X width. You can increase width of quiet zone by increasing the value of properties LeftMargin (Float; Default: 0) and RightMargin (Float; Default: 0). Also, the height of the image can be increased using TopMargin (Float; Default: 0) and BottomMargin (Float; Default: 0).
issn.TopMargin = 10
issn.BottomMargin = 10
issn.LeftMargin = 10
issn.RightMargin = 10
Property TextMargin (Float; Default: 6 pixel) controls the width of space between ISSN bar code and the human readable text below the barcode.
issn.TextMargin = 10