修改了一些Xaml, 始终提示
Compiler error(s) encountered processing expression "deviceA.B".
Type ‘DeviceA‘ is not defined.
查看错误信息指向的 Line，并没有发现异常。
和编译成功的Xaml比较后发现需要添加Refence.
修改前：
<mmtas:UsingSequencesap2010:WorkflowViewState.IdRef="UsingSequence_1">
修改后：
<mmtas:UsingSequencesap2010:WorkflowViewState.IdRef="UsingSequence_1"
mva:VisualBasic.Settings="Assembly references and imported namespaces serialized as XML namespaces">
(Xaml) Type 'DeviceA' is not defined.
原文：http://www.cnblogs.com/fdyang/p/5347441.html