Propertygrid under net7 only shows a single item per category

[ykarpeev]

After updating my project to net7 I noticed that only a single item per category is shown in category view. It will still show all of them under alphabetical mode.

Here are my results with a test project.

        <xctk:PropertyGrid SelectedObject="{Binding}" />


    public class MainViewModel : ObservableObject
    {
        public string Setting2 { get; set; }

        public string Setting1 { get; set; }
    }

[XceedBoucherS]

Hello,
This is interesting.

Everything is correct in NET6 but not in NET7.
we will look into this.

Thank you for pointing this out.

[XceedBoucherS]

Here's a fix (it will part of v4.6).

In file Xceed.Wpf.Toolkit/PropertyGrid/Implementation/PropertyItemsControl.cs, replace the constructor with:
public PropertyItemsControl()
{
this.Initialized += this.PropertyItemsControl_Initialized;
}

Then, add the 2 following methods:
private void PropertyItemsControl_Initialized( object sender, EventArgs e )
{
var propertyItemsControl = sender as PropertyItemsControl;
if( propertyItemsControl != null )
{
var propertyGrid = propertyItemsControl.TemplatedParent as PropertyGrid;
if( propertyGrid != null )
{
if( propertyGrid.IsVirtualizing )
{
this.SetVirtualizingWhenGrouping();
}
}
else
{
var propertyItem = propertyItemsControl.TemplatedParent as PropertyItem;
if( propertyItem != null )
{
propertyGrid = propertyItem.ParentElement as PropertyGrid;
if( propertyGrid != null )
{
if( propertyGrid.IsVirtualizing )
{
this.SetVirtualizingWhenGrouping();
}
}
}
}
}
}

private void SetVirtualizingWhenGrouping()
{
  var propertyItemsControlProperties = TypeDescriptor.GetProperties( this, new Attribute[] { new PropertyFilterAttribute( PropertyFilterOptions.All ) } );
  var prop1 = propertyItemsControlProperties.Find( "VirtualizingPanel.IsVirtualizingWhenGrouping", false );
  if( prop1 != null )
  {
    prop1.SetValue( this, true );
  }
  var prop2 = propertyItemsControlProperties.Find( "VirtualizingPanel.CacheLengthUnit", false );
  if( prop2 != null )
  {
    prop2.SetValue( this, Enum.ToObject( prop2.PropertyType, 1 ) );
  }
}

[ykarpeev]

Thank you.