silverlight 3 designing error

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XML

<UserControl.Resources>
    <ResourceDictionary x:Key="Collection" >("error in this line")
      <ResourceDictionary.MergedDictionaries>
         <ResourceDictionary x:Name="dict" Source="/Resources.xaml"/>
      </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</UserControl.Resources>

the error is

the "key" attribute can only be used on an element that is contained in "IDictionary".

Posted 24-Jan-10 21:14pm

Niki Jain

Updated 25-Jan-10 2:06am

Chris Maunder772.9K

v2

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AspDotNetDev · Accepted Answer · 2010-01-25T02:19:00

The problem is that you are using a merged dictionary in place of your typical resources. In this case, you can only have one child element (what you are calling "Collection") of the UserControl.Resources tag. This is because you are basically saying "rather than define the dictionary here, I am going to define which other dictionaries to combine into a dictionary". Remove the x:Key from the line with the error, and you will be fine.