How to Display Different QuickCommands Based on Nodes in WPF Diagram?

In the WPF Diagram, you can display the different QuickCommands based on the type of the Node by using the SelectorChanged event. First, create the QuickCommand you need for each node type. Then, in the SelectorChanged event, update the QuickCommands according to the type of node selected. We have provided the code example for how to achieve this.

Code snippet

public QuickCommandViewModel deleteCommand;
public QuickCommandViewModel duplicateCommand;


// Create QuickCommand for 'delete'
deleteCommand = new QuickCommandViewModel()
{
   Command = (Diagram.Info as IGraphInfo).Commands.Delete,

   // Set other properties like Shape, ShapeStyle, etc.
};


// Create QuickCommand for 'duplicate'
duplicateCommand = new QuickCommandViewModel()
{
   Command = (Diagram.Info as IGraphInfo).Commands.Duplicate,

   // Set other properties like Shape, ShapeStyle, etc.
};


(Diagram.Info as IGraphInfo).SelectorChangedEvent += MainWindow_SelectorChangedEvent;

private void MainWindow_SelectorChangedEvent(object sender, SelectorChangedEventArgs args)
{
  SelectorViewModel selector = Diagram.SelectedItems as SelectorViewModel;
   if (selector.Nodes as IEnumerable<object> != null && (selector.Nodes as IEnumerable<object>).Count() > 0)
   {
       object node = (selector.Nodes as IEnumerable<object>).First() as object;
       if (node is NodeA)
       {
           (Diagram.SelectedItems as SelectorViewModel).Commands = new QuickCommandCollection()
           {
               deleteCommand,
               duplicateCommand
           };
       }
       else if (node is NodeB || node is NodeC)
       {
           (Diagram.SelectedItems as SelectorViewModel).Commands = new QuickCommandCollection()
           {
               deleteCommand
           };
      }
   }
} 

View sample in GitHub

Conclusion
I hope you enjoyed learning about how to display different QuickCommands based on Nodes in WPF Diagram.
You can refer to our WPF Diagram feature tour page to learn about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our WPF Diagram example to understand how to create and manipulate data

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