C#•3w ago

✅ Data Binding System.Numeric.Vector3?

I have a collection of objects containing Vector3 properties. Is it possible to data bind directly to the X/Y/Z fields in my WPF xaml data grid or do I need to add pass through properties for them all? Seems like a lot of boilerplate when you have many vectors.

10 Replies

Evyr•3w ago

not with properties. It's a value type, so the getter gets a copy, and trying to set a field of that retrieved copy won't affect the property itself

Mormon SonOP•3w ago

I’m only interested in reading the values, but it would be nice not to add 3 additional properties for each of the 7 vectors on my data object to read them all So I’m wondering if there is some advanced way I can enable binding directly to the field rather than a property, perhaps something to do with ICustomTypeDescriptor? TypeDescriptorProvider can only be applied to classes I control, is there any equivalent way to provide a custom type descriptor for a specific property

Mąż Zuzanny Harmider Szczęście•3w ago

u mean something like this?: MainWindow.xaml

<Window>
  <DataGrid ItemsSource="{Binding Source=VectorList}" AutoGenerateColumns="False">
    <DataGrid.Columns>
      <DataGridTextColumn Header="X" Binding="{Binding X}"/>
      <DataGridTextColumn Header="Y" Binding="{Binding Y}"/>
      <DataGridTextColumn Header="Z" Binding="{Binding Z}"/>
    </DataGrid.Columns>
  </DataGrid>
</Window>

<Window>
  <DataGrid ItemsSource="{Binding Source=VectorList}" AutoGenerateColumns="False">
    <DataGrid.Columns>
      <DataGridTextColumn Header="X" Binding="{Binding X}"/>
      <DataGridTextColumn Header="Y" Binding="{Binding Y}"/>
      <DataGridTextColumn Header="Z" Binding="{Binding Z}"/>
    </DataGrid.Columns>
  </DataGrid>
</Window>

MainWindow.xaml.cs

namespace Project
{
  public partial class MainWindow : Window,INotifyPropertyChanged
  {
    private ObservableCollection<Vector3> _vectors;
    public ObservableCollection<Vector3> Vectors
    {
      get {return _vectors;}
      set {
        _vectors=value;
        OnPropertyChanged();
      }
    }
    public event PropertyChangedEventHandler PropertyChanged;
    public void OnPropertyChanged([CallerMemberName]string propertyName=""){
    PropertyChanged?.Invoke(this,new PropertyChangedEventArgs(propertyName);
    }
    public MainWindow(){
      Vectors=new ObservableCollection<Vector3>(){
        //vectors here
      }
    }
  }
}

namespace Project
{
  public partial class MainWindow : Window,INotifyPropertyChanged
  {
    private ObservableCollection<Vector3> _vectors;
    public ObservableCollection<Vector3> Vectors
    {
      get {return _vectors;}
      set {
        _vectors=value;
        OnPropertyChanged();
      }
    }
    public event PropertyChangedEventHandler PropertyChanged;
    public void OnPropertyChanged([CallerMemberName]string propertyName=""){
    PropertyChanged?.Invoke(this,new PropertyChangedEventArgs(propertyName);
    }
    public MainWindow(){
      Vectors=new ObservableCollection<Vector3>(){
        //vectors here
      }
    }
  }
}

Mormon SonOP•3w ago

Yeah but because Vector3 is fields not properties those bindings don’t work

Mąż Zuzanny Harmider Szczęście•3w ago

hmm maybe create a custom class that extends Vector3 and turn them into properties

Mormon SonOP•3w ago

Right that’s the kinda thing I want to avoid

Mąż Zuzanny Harmider Szczęście•3w ago

dont think u can do it any other way, not sure tho im not an expert or anything

Mormon SonOP•3w ago

It’s okay, I figured it out using “TypeProvider.AddProvider” using a TypeDescriptorProvider I wrote to pretend the fields are properties for the component model. There was a msdn magazine issue from April 2005 describing how. Required a little updating.

Mąż Zuzanny Harmider Szczęście•3w ago

good $close

MODiX•3w ago

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✅ Data Binding System.Numeric.Vector3?

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