c# - ValidationSummary does not exist in WPF? -

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i'm trying style wpf datagrid. copied control template here, resource dictionary. can't compile, because says,

"validationsummary not exist in xml namespace"

i have presentationcore , presentationframework assemblies referenced in project.

i think might need "system.windows.controls.data.input.dll" can't find it.

i think part of silverlight toolkit. cannot use in wpf. have find wpf counter part same class.


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