Graph: graph of WPF. Error Plots.Clear)

Hello

I need dynamically add patches to the chart. Code like this,

ObservableCollection dataSource = new ObservableCollection ();

Graph DataSource = dataSource;

public void AddOnePlot (Point [] pointData)

{

Plot = new Plot();

Graph Plots.Add (plot);

dataSource.Add (pointData);

}

But when I call graph. Plots.Clear: the error is "beach action are not supported.". How to erase all the plots in the graph?

Looking forward to your response. Thank you.

The Plots collection on the Graph class derived from NotifyingCollection , which raises a single optimized global event when several items change. On the other hand raises the ObservableCollection .NET separate events for each item in the collection. Measurement Studio controls are supported on both models, but the WPF controls such as ItemsControl do not support aggregation events ("actions range" in the error message).

However, there is a bug in the current version of the Legend control: If you bind the ItemsSource property to a collection rather than a chart, you may encounter this error if a default collection view is created. To avoid this, you can serialize events (as you demonstrated above, removing individual items instead of compensation), or you can use the NotifyCollectionChangedSimplifier to adapt the collection for the model "a separate event for each item:

xmlns:ni="http://schemas.ni.com/controls/2009/xaml/presentation"

    xmlns:niPrimitives="http://schemas.ni.com/controls/2009/xaml/presentation/primitives"

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Tags: NI Software

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