C# 如何根据父对象更改UITypeEditor'；谁的财产？

我正在测试，希望根据父对象的属性选择UIType编辑器：

    public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
    {
        // Uses the IWindowsFormsEditorService to display a 
        // drop-down UI in the Properties window.
        IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
        if (edSvc != null)
        {
            AngleEditorTestControl t = context.Instance as AngleEditorTestControl;

            if (t != null)
            {
                // If the property TestValue is null or empty, the AngleControl is selected
                if (String.IsNullOrEmpty(t.TestValue))
                {
                    // Display an angle selection control and retrieve the value.
                    AngleControl angleControl = new AngleControl(
                        (bool)context.PropertyDescriptor.GetValue(
                        context.Instance), edSvc);

                    edSvc.DropDownControl(angleControl);
                    return angleControl.Valeur;
                }
                else
                {
                    // Otherwise I want the default UIType Editor (for Int32, float and double) will be selected
                    // ...
                }
            }

        }
        return value;

    }

怎么做

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谢谢大家!

你找到答案了吗？我可能会冒险猜测一下，但我不确定默认UITypeEditor是什么意思。是否只是指未指定编辑器属性时显示的常规旧文本框？