QR Code Image Setting User Manual in VB.NET
VB.NET QR Code Generator is an easy-to-use barcode generating component, simply integrated into the target VB.NET project without any requirement for adding additional DLLs. It supports to be used in various VB.NET development environments such as VB.NET Winforms, VB.NET Web Forms, SSRS and Crystal Report.
With VB.NET QR Code Generator, a lot of image related properties are provided, such as image format, resolution, text color, rotation and other image setting options. Users may easily to set QR Code images to meet their needs in VB.NET applications. Here is a complete tutorial for setting QR Code image using VB.NET. More information, please go to:
QR Code Image Related Properties
Error Correction Levels
Image property ECL is provided by Barcode Generator for .NET Ultimate for users to set error correction level of QR Code (L, M, H, Q), which defines data recovery capacity.
Structure Append
Image property StrutureAppend is provided by Barcode Generator for .NET Ultimate to users to connect several QR-Code symbols (up to 16 symbols) for encoding larger quantities of data.
Barcode Resolution
Image property Resolution is provided by Barcode Generator for .NET Ultimate for users to describe QR Code barcode resolution in dots per inch.
Barcode Rotation
Image property Rotate is provided by Barcode Generator for .NET Ultimate for users to change the rotated angle of QR Code barcode into 0, 90, 180 and 270 degrees.
Image Formats
Image property ImageFormat is provided by Barcode Generator for .NET Ultimate for users to draw and save QR Code barcode into dynamic image file formats, such as Png, Jpeg/Jpg, Gif, Tiff, Bmp, etc.
VB.NET Graphic Objects
VB.NET Graphic Objects
Customize QR Code Barcode Images in VB.NET
Make sure that your have installed those programs before you specify QR Code image in VB.NET:
- Microsoft .NET Framework 2.0/3.0/4.0
- Microsoft Visual Studio .NET (any version)
- Barcode Generator for .NET Ultimate installed
Customize QR Code Barcode Images in .NET Project Using VB.NET Class
Copy those following code onto your VB.NET projects:
Dim barcode As BusinessRefinery.Barcode.QRCode =
New BusinessRefinery.Barcode.QRCode()
barcode.Code = "0123456789"
barcode.drawBarcode2ImageFile("c:/qr-code-vb-net.gif")
Change QR Code Resolution in DPI
In Barcode Generator for .NET Ultimate, the default value of Resolution is 72 dpi.
Copy those following code to change your resolution:
Select QR Code Error Correction Level
In Barcode Generator for .NET Ultimate, the default value of ECL is QRCodeECL.L.
Copy those following code to change QR Code error correction level:
barcode.ECL = QRCodeECL.H
Adjust QR Code Barcode Quiet Margin
In Barcode Generator for .NET Ultimate, the default value of BottomMargin, TopMargin , LeftMargin and RightMargin are 0 respectively.
Copy those following code to change your quiet margin size:
barcode.BottomMargin = 7
barcode.TopMargin = 7
barcode.LeftMargin = 5
barcode.RightMargin = 5
Change QR Code Image Rotation
In Barcode Generator for .NET Ultimate, the default value of Rotate is Rotate.Rotate0.
Copy those following code to change your image rotation angle:
barcode.Rotate = Rotate.Rotate180
Generate Mutilpe QR Code barcode with Structure Append
In Barcode Generator for .NET Ultimate, the default value of StructureAppend is false. And SymbolCount, SymbolIndex and Parity default value are 0 respectively.
Copy those following code to make multiple QR Code barcodes:
barcode.StructureAppend = true
barcode.SymbolCount = 3
barcode.SymbolIndex = 0
barcode. = 10
barcode.SymbolCount = 3
barcode.SymbolIndex = 1
barcode.Parity = 10
barcode.SymbolCount = 3
barcode.SymbolIndex = 2
barcode.Parity = 10
Save QR Code in Multiple Image Formats
In Barcode Generator for .NET Ultimate, the default value of is gif.
Copy those following code to change your image format:
barcode.Format = ImageFormat.Png;
barcode.drawBarcode2ImageFile("c:/qr-code-vb-net.png")
Users may change image format into gif, png, tiff, jpeg, png; or save it as VB.NET graphic objects:
Public Sub drawBarcode2Stream(ByVal fileStream As System.IO.Stream)
Public Sub drawBarcodeOnGraphics(ByVal graphics As
System.Drawing.Graphics)
Public Function drawBarcodeAsBytes() As Byte()
Public Function drawBarcodeOnBitmap() As System.Drawing.Bitmap
