楼主
你好，
建议使用一些开源或者免费的Barcode Scanner APIs
来完成，例如：
http://www.nuget.org/packages/ZXing.Net/0.12.0
首先稳定性比自己写的要强一些。另外如果想自己实现也是可以的，Windows Phone
平台下，建议参考Nokia
官网上的这篇文章：
http://developer.nokia.com/community/wiki/Generating_and_scanning_barcodes_using_ZXing_on_Windows_Phone
谢谢！
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