c# - winforms PropertyGrid 中的类别层次结构

Question

我有一些属性可以分为类别和子类别。当我将它们添加到 PropertyGrid 时，所有子类别都在根目录中，但我希望子类别成为类别的子类别。

class Settings
    {
        [Category("SubCategory1")]
        public bool Property1 { get; set; }

        [Category("SubCategory1")]
        public bool Property2 { get; set; }

        [Category("SubCategory2")]
        public bool Property3 { get; set; }
    }

PropertyGrid grid = new PropertyGrid();    
grid.SelectedObject = new Settings();

我想让它看起来像

 -Category1
   -SubCategory1
      Property1
      Property2
   -SubCategory2
      Property3

Answer 1

我找到了解决办法。方法是使用 TypeConverter 属性和嵌套类。

var settings = new Settings();
settings.Subcategory1 = new SubCategory1(){Property1 = "P1", Property2 = "P2"};
settings.Subcategory2 = new SubCategory2(){Property3="P3"};
grid.SelectedObject = settings;

...

public class Settings
{
    [Category("Category1")]
    public SubCategory1 Subcategory1 { get; set; }

    [Category("Category1")]
    public SubCategory2 Subcategory2 { get; set; }
}

[TypeConverter(typeof (ExpandableObjectConverter))]
public class SubCategory1
{
    public String Property1 { get; set; }

    public String Property2 { get; set; }

    public override string ToString()
    {
        return String.Empty;
    }
}

[TypeConverter(typeof(ExpandableObjectConverter))]
public class SubCategory2
{
    public String Property3 { get; set; }

    public override string ToString()
    {
        return String.Empty;
    }
}

希望对大家有帮助。