I have tried to install QrCode.net nugget package for an UWP application, but it writes the error for me:
using System.Drawing;
using System.Drawing.Imaging;
using System.Windows.Forms;
are not not exists.
Does anyone know any nugget package for UWP application that helps me to create and show a QR code that generated from a string? (UWP/C#)
Does anyone know any nugget package for UWP application that helps me to create and show a QR code that generated from a string? (UWP/C#)
Since you are developing an UWP app, you can use the Zxing.Net.Mobile package. After installed this package, to generate a barcode, you can refer to the following example:
<Image x:Name="qrcodeImg" Stretch="None" />
code behind:
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var write = new BarcodeWriter();
write.Format = ZXing.BarcodeFormat.QR_CODE;
var wb = write.Write("BarCode Content");
this.qrcodeImg.Source = wb;
}
Cannot implicitly convert type 'byte[]' to 'Windows.UI.Xaml.Media.ImageSource'
System.Drawing is not available in UWP (anymore?), the library is not updated and some of the code requires System.Drawing.Bitmap to be available.This is how you do using the MVVM pattern (based on Grace Feng's approach)
XAML
<Image Source="{Binding QRImage, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
Viewmodel
// Property
public WriteableBitmap QRImage { get; set; }
// Function to call
private void SetQR()
{
var options = new QrCodeEncodingOptions()
{
DisableECI = true,
CharacterSet = "UTF-8",
Width = 1000,
Height = 1000
};
BarcodeWriter writer = new BarcodeWriter();
writer.Format = BarcodeFormat.QR_CODE;
writer.Options = options;
QRImage= writer.Write(SelectedEvent.GetQrString());
}
Another option is to use QRCoder. Some example setup from the github.
QRCodeGenerator qrGenerator = new QRCodeGenerator();
QRCodeData qrCodeData = qrGenerator.CreateQrCode("The text which should be encoded.", QRCodeGenerator.ECCLevel.Q);
QRCode qrCode = new QRCode(qrCodeData);
Bitmap qrCodeImage = qrCode.GetGraphic(20);
