DesignerSerializationVisibility, Browsable,Category Attribute

         1.  DesignerSerializationVisibility

指在design time的时候，在property grid中设置的某个属性的值是否应该插入到InitializeComponent的代码中去。

·         Visible 默认值，会插入中去。

·         Hidden 不会插入中去。

·         Content  将该属性中所有的为public的子属性插入中去。

例如下面的例子:
public partial class ContentSerializationExampleControl : UserControl
    {
        public ContentSerializationExampleControl()
        {
            InitializeComponent();
        }

        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public DimensionData Dimensions
        {
            get
            {
                return new DimensionData(this);
            }
        }

        [TypeConverterAttribute(typeof(System.ComponentModel.ExpandableObjectConverter))]
        // This attribute indicates that the public properties of this object should be listed in the property grid.
        public class DimensionData
        {
            private Control owner;

            // This class reads and writes the Location and Size properties from the Control which it is initialized to.
            internal DimensionData(Control owner)
            {
                this.owner = owner;
            }

            public Point Location
            {
                get
                {
                    return owner.Location;
                }
                set
                {
                    owner.Location = value;
                }
            }

            public Size FormSize
            {
                get
                {
                    return owner.Size;
                }
                set
                {
                    owner.Size = value;
                }
            }
        }
    }
则DimensionData的Location和FormSize属性都会出现在InitializeComponent中。

2. Category：指定属性出现在property grid中的哪个组中。
3. Browsable：指定属性是否显示在property grid中