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Hi, Andrew. sorry to bother you.

if i changed the YValue by drag the point on series(http://support.scichart.com/index.php?/Knowledgebase/Article/View/17239/32/custom-chartmodifiers—part-5—select-and-drag-a-data-point), i want to set data repository dirty. how to notify the viewmodel, by even, or binding. could you tell me the better( rational, even best ) way?

sorry, i’m a newer to WPF.

many thanks

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