Different subclass show different property

[Steve]

I have a hierarchy

public class Corner
    {
    public string Name { get; set; }
    }

public class Fillet : Corner
    {
    public double Radius { get; set; }
    }

public class Chamfer : Corner
    {
    public double Distance1 { get; set; }
    public double Distance2 { get; set; }
    }

public enum CornerMode
{
Fillet,
Chamfer
}

public class CornerAttribute
{
public CornerMode CornerMode {get;set;}
public Corner Corner {get;set;}
}

 

I will assign a subclass instance according to the CornerMode. How to switch the type convert at runtime so that the property Corner can be expandable?

[Dimitar]

Hello Steve,

In order to make "Corner" property expandable, you can bound TypeConverter attribute of type ExpandableObjectConverter to "Corner" as follows:

public class Profession
{
    public string Title { get; set; }

    [Description("This is a property with a ExpandableObjectConverter")]
    [TypeConverter(typeof(ExpandableObjectConverter))]
    public Corner Corner { get; set; }
}

If you wish to hide "Corner" text, as shown in your attachments, you can subscribe to RadPropertyGrid1_ItemFormatting event and hide the text.

private void RadPropertyGrid1_ItemFormatting(object sender, PropertyGridItemFormattingEventArgs e)
{
    if (e.Item.Label == "Corner")
    {
        ((PropertyGridItemElement)e.VisualElement).ValueElement.Text = "";
    }
}

You can also disable editing of "Corner" text by subscribing to RadPropertyGrid1_Editing event and cancel editing as follows:

private void RadPropertyGrid1_Editing(object sender, PropertyGridItemEditingEventArgs e)
{
    if (e.Item.Label == "Corner")
    {
        e.Cancel = true;
    }
}

For your convenience, I have attached a project with an implementation and a screenshot.

I hope you find this information useful. Please don't hesitate to ask if you have further questions.

Regards,
Dimitar
Progress Telerik