How to change the color of a node in the stencil and diagram while loading a saved file in WPF Diagram(SfDiagram)?

In the WPF Diagram, you can change the color of a node in the stencil and diagram while loading a saved file by utilizing the Load and ItemAdded events or commands. In the Load event or command method, update the color of the Node using a custom property. Then, in the ItemAdded event or command method, assign this custom property to the node’s Content property. We have provided the code example for how to achieve this.

Code Snippet:

LoadCommand = new DelegateCommand(OnLoad);

private void OnLoad(object obj)
{
//Brush is the Custom property.
   Brush = new SolidColorBrush(Colors.Red);
   OpenFileDialog dialog = new OpenFileDialog();
   if (dialog.ShowDialog() == true)
   {
       using (Stream myStream = dialog.OpenFile())
       {
           SfDiagram.Load(myStream);
       }
   }
}


ItemAddedCommand = new DelegateCommand(OnItemAdded);

private void OnItemAdded(object obj)
{
    ItemAddedEventArgs args = (ItemAddedEventArgs)obj;
    if(args.Item is NodeViewModel)
    {
        (args.Item as NodeViewModel).Content = Brush;
    }
} 

View sample in GitHub

Conclusion
I hope you enjoyed learning about how to change the color of a node in the stencil and diagram while loading a saved file in the 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.

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