QR Code FAQ in C#.NET Barcode Control SDK/DLL

C# barcode generator & library DLL generates QR Code images using C# class method to draw QR Code dynamically as images in C#.NET projects such as C# Windows applications, C# ASP.NET, C# Crystal Report, C# RDLC local report, C# reporting Service, C# control applications and C# class library. The generated QR Code is able to apply arabic text, url, company logo, and other numeric or special characters using C# coding. Please see detail guide of generating QR Code image in C#.NET.

This article has a thorough introduction of QR Code property settings under the multiple development environments using C# programming from the following aspects:

QR Code is capable of encoding various types of data, such as arabic text, url, company logo, byte, Kanji, etc.

QR Code is capable of encoding "Numeric", "Alphanumeric", "Byte" and "Kanji" characters. For easy and fast encoding of QR Code in C# class, Terrek has designed "Auto" data mode. Programmers may change the QR Code data mode through QRCodeDataMode property.

QR Code C#.NET Sample Code: qrcode.QRCodeDataMode=QRCodeDataMode.Auto;

QR Code is presented as square shape; the whole image size is changed from Version 1 to Version 40. Programmers may change QR Code version through QRCodeVersion.

QR Code C#.NET Sample Code:qrcode.QRCodeVersion=QRCodeVersion.V10;

QR Code has 4 error correction levels that are all applied in barcode generator DLL library for Terrek: L (7%), M (15%), Q (25%), and H (30%). The highest corretion level is, the lower capacity of QR Code. Programmers may change this error correction level through QRCodeECL property.

QR Code C#.NET Sample Code: qrcode.QRCodeECL=QRCodeECL.H;

QR Code is capable of encoding different types of data, such as Kanji, Byte, Alphanumeric, etc. To switch the different data in QR Code, users need to apply the ECI function. The default is 3 that means to encode ASCII characters. Developers may change the ECI function by QRCodeECI property.

QR Code C#.NET Sample Code: qrcode.QRCodeECI=3;

QR Code is able to create QR Code that is compatible with GS1 standard by applying the FNC1 function.

QR Code C#.NET Sample Code: qrcode.FNC1= FNC1.First;

QR Code is capable of encoding special characters by applying the Tilde function. To encode special characters in QR Code, just set the Tilde to true.

QR Code C#.NET Sample Code: qrcode.Tilde= True;

QR Code module size is changed by BarWidth; it is according with QR Code version to change the whole QR Code image size.

QR Code C#.NET Sample Code: qrcode.BarWidth = 2;

Set the margin size can enhance the readability of QR Code image with barcode scanners. The margin size is related to top, bottom, left and right.

QR Code C#.NET Sample Code:
qrcode. MarginL = 10;
qrcode. MarginR = 10;
qrcode. MarginT = 10;
qrcode. MarginB = 10;

QR Code generated in C#.NET project with barcode control DLL library can be displayed as Gif, Tiff, Bmp, Png, Jpeg and other image formats. Programmers may change the format using BarcodeFormat property.

QR Code C#.NET Sample Code:
qrcode.BarcodeFormat = System.Drawing.Imaging.ImageFormat.Png;
qrcode.drawBarcode("C:\\qrcode.png");

DPI (Dots per inch) is used commonly as the measure of printing resolution. The resolution of image generated by QR Code generator could be managed with DPI.

QR Code C#.NET Sample Code: qrcode.DotsPerInch = 72;

QR Code position may be influenced by two factors, one is barcode alignment, and the other is rotation. Programmers may set the position by Rotation and BarAlign respectively.

QR Code C#.NET Sample Code:
qrcode.BarAlign = BarAlign.Center;
qrcode.Rotation = Rotation.Degree0;

It is able to change barcode colors with barcode control library DLL using C#.NET class. Both background color and foreground color are easy to be changed by manipulating ImageColor and BarColor respectively.

QR Code C#.NET Sample Code:
qrcode. ImageColor = Color.White;
qrcode. BarColor = Color.Black;

Using C#.NET to create QR Code barcode images, developers are entitled to create, embed QR Code barcode images in various development environments. And the following projects can be adopted to fulfill your .NET projects.