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RadiantQ WPF Gantt
How to expand a specific node in the heirarchical list?
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RadiantQ WPF Gantt
How to expand a specific node in the heirarchical list?
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How to expand a specific node in the heirarchical list?
This topic discusses how to keep nodes collapsed on load.
Then if you want to expand a specific node on load, you can do this:
a) To get hold of the 1st parent in the hierarchy.
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// First listen to TemplateApplied private void GanttControl_TemplateApplied(object sender, EventArgs e) { GanttControl.FlexyTree.Loaded += FlexyTree_Loaded; } void FlexyTree_Loaded(object sender, RoutedEventArgs e) { FlexyTree tree = sender as FlexyTree; // Get hold of a specific item. object tvi = tree.ItemContainerGenerator.ContainerFromIndex(0);
// Do anything else necessary before you set IsExpanded to true below.
((TreeViewItem)tvi).IsExpanded = true; } |
b) To get hold of a TreeViewItem corresponding to a data object in your bound view model:
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// First listen to TemplateApplied private void GanttControl_TemplateApplied(object sender, EventArgs e) { GanttControl.FlexyTree.Loaded += FlexyTree_Loaded; } void FlexyTree_Loaded(object sender, RoutedEventArgs e) { FlexyTree tree = sender as FlexyTree; // Get hold of a specific item. object tvi = tree.ItemContainerGenerator.ContainerFromItem(/*A reference to the item in your view model that's rendered as a node in the top level in the hierarchy list*/);
// Do anything else necessary before you set IsExpanded to true below.
((TreeViewItem)tvi).IsExpanded = true; } |
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