在设计时通过反射改变属性的特性

   1: public class A

    {
        public string Name { get; set; }

        public string Age { get; set; }

        public bool IsOk { get; set; }

        [Browsable(false)]
        public bool Visiable { get; set; }
    }

private void button1_Click(object sender, EventArgs e)
        {
            A a = new A();
            Type type = typeof(BrowsableAttribute);

            PropertyDescriptorCollection props = TypeDescriptor.GetProperties(a);
            AttributeCollection attrs = props["Visiable"].Attributes;

            FieldInfo fld = type.GetField("browsable", BindingFlags.Instance | BindingFlags.NonPublic);
            fld.SetValue(attrs[type], true);

            this.propertyGrid1.SelectedObject = a;
        }