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DZone > Mobile Zone > An Error You May Run Into When Using Blend For Windows Phone

An Error You May Run Into When Using Blend For Windows Phone

Caleb Jenkins user avatar by
Caleb Jenkins
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Jun. 14, 12 · Mobile Zone · Interview
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i ran in to this recently and couldn’t find anything online about it.

using mvvm-light for windows phone development and blend. it works fine in visual studio, but every time i open one of my pages in blend i get this error.

blend error: class is already registered. mvvm-light in blend

already registered? i’m using mvvm-light ’s integration with a simple ioc container to manage my dependencies and so it really leaves me wondering what’s going on here. i know that i only registered this class once.. so what gives?

fortunately for me, laurent (the creator of mvvm-light, fellow mvp, and all around blend ninja) is active on twitter and saw my tweet.

image

image

image

image

hmm.. let’s try that…

image

and ta-day!

image

design time data working in blend using mvvm-light!.

special thanks to laurent for knowing exactly what i needed to do. thanks my friend!

Windows Phone

Published at DZone with permission of Caleb Jenkins, DZone MVB. See the original article here.

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