Zxing的“Codabar”条形码生成器在Xamarin.ios中失败

我想同时显示二维码和Codabar码。

这是我的密码。

var qrcodeWriter = new ZXing.Mobile.BarcodeWriter {
    Format = ZXing.BarcodeFormat.QR_CODE,
    Options = new ZXing.Common.EncodingOptions {
        Width = 400,
        Height = 400,
       Margin = 1
    }
};
var qrcode = qrcodeWriter.Write (order.order_number);
imageQR.Image = qrcode;

var barcodeWriter = new ZXing.Mobile.BarcodeWriter {
    Format = ZXing.BarcodeFormat.CODABAR,
    Options = new ZXing.Common.EncodingOptions {
        Width = 400,
        Height = 80,
        Margin = 1
    }
};
var barcode = barcodeWriter.Write (order.order_number);
imageBar.Image = barcode;

二维码成功,但codabar在barcodeWriter失败。写入函数。

请帮帮我。

错误代码:

ex{System.ArgumentException:无法编码:ZXing.OneD.CodaBarWriter.encode(System.String co}System.ArugmentException

调用堆栈:

MasterBee.HistoryDetailViewController。ViewDidLoad()位于/Volumes/Untitled/MsterBee_TEMP/MasterBee/ViewControllers/HistoryDetailViewController中。cs:69

UIKit.UI应用程序。中的UIApplicationMain() UIKit.UI应用程序。/Users/builder/data/lanes/3339/39ebb778/source/maccore/src/UIKit/UIApplication.cs:79中的Main(string[]args,System.IntPtr主体,System.IentPtr委托)

UIKit.UI应用程序。/Users/builder/data/lanes/3339/39ebb778/source/maccore/src/UIKit/UIApplication.cs:63中的Main(string[]args,string principalClassName,string delegateClassName)

MasterBee.应用程序。/Volumes/Untitled/MsterBee_TEMP/MasterBee/Main.cs:15中的Main(string[]args)