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.NET Barcode Generator in C# > C#.NET Windows Control Library Project Template Barcode Generation > Generate Code 39 using Windows Control Library Project Template in C#
.NET Barcode Generator, create Code 39 in C#.NET
Create Code 39 images using C# Windows Control Library Project Template
.NET Code 39 Generator
When to create our own control to print Code 39
You are going to be in need of your own control to generate Code 39 barcode image when:
How to create our own control that prints Code 39In Visual Studio, Project Template called Window Control Library is brought in by Microsoft to create user-defined control. The template adds essential reference and project files to the control automatically.
Window Control Library provides a means for you to extend .NET Code 39 Generator Control or combine the control with other controls. Both ways implement quick enhancement of .NET Code 39 Generator Control functionality in an easy way.
The extended control or composite control created by using .NET Code 39 Generator Control as a base control automatically inherits the complete set of functionality of .NET Code 39 Generator Control. You can have your own selection of functionality created using by typing default
Code 39Code 39 is a discrete barcode symbology. It is known as USD-3, Code 3 of 9, Alpha 39, Type 39 as well. Developed by Dr. David Allais and Ray Stevens of Intermec in 1974, code 39 was initially designed as the pattern which had two wide bars and one wide space in each character, and thus 40 possible characters could be obtained. If one of these characters was set aside as a start and stop pattern, then there would be only 39 characters left, which explained the origin of the name Code 39. Afterwards, Code 39 was standardized as ANSI MH10.8 M-1983 and MIL-STD-1189.
CharacteristicsCode 39 has several features that make it outstanding. Firstly, 43 characters are defined by Code 39. It includes all the letters from A through Z, numeric digits from 0 to 9, and a great number of special characters such as -, $, /, +, %, etc. Additionally, the character '*' is used for both start and stop delimiters. Nine elements which have five bars and four spaces are contained in each character. Thirdly, Three of the nine elements in each character are wide (binary value 1), and six elements are narrow (binary value 0). The ratio of width between narrow and wide can be gained between 1:2 and 1:3.
AdvantagesAs for Code 39, plenty of advantages can be noted. One advantage of Code 39 is that since generating a check digit is not necessary, then it can easily be integrated into existing printing system by adding a barcode font to the system or printer and then printing the raw data in that font. Apparently, a check digit is not included in the barcode itself, whereas, it can be considered self-checking on the grounds that a single incorrectly interpreted bar is not able to produce another valid character. It is possible that the most severe obstacle of Code 39 is its low data density which means that it requires more space to encode data in Code 39 than in Code 128. It can be seen that small goods cannot be labeled with a Code 39 based barcode. Nevertheless, Code 39 is still widely used and can be decoded with literally any barcode reader.
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