It seems that the Width property of the DataGridTextColumn class can't be set in the XAML file. The change documentation notes that setting it programmatically requires some code changes to support the new DataGridLength data type. However setting it in XAML results in the error "The TypeConverter for "DataGridLength" does not support converting from a string." under Blend.
e.g. <DataGridTextColumn Width="100"/>
Anyone know why or a workaround?
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