Hi all:
After I use the optional "Retarget to windows 8.1" to update my app for windows 8.1,I found I can't build my project and I got that message:
C:\Program Files (x86)\MSBuild\Microsoft\WindowsXaml\v12.0\8.1\Microsoft.Windows.UI.Xaml.Common.targets(327,9): Xaml internal error WMC9999:An item with the same key has already been added.
My Visual Studio version is 2013 update 2.
How could I resolve this problem ?
I am very worried!
thx!
别紧张,我不是什么好人。。。