自定义控件

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public partial class UserControl1 : UserControl
    {

[DefaultValue(typeof(string), "Init 标签"), Category("属性标签"), Description("设置文本的标签.")]
        public string SealLabelText
        {
            get
            {
                return label1.Text;
            }
            set
            {
                label1.Text = value;
                this.Invalidate();
            }
        }
        [DefaultValue(typeof(string), "文本内容"), Category("内容字段"), Description("设置值.")]
        public string SealTextContent
        {
            get
            {
                return textBox1.Text;
            }
            set
            {
                textBox1.Text = value;
                this.Invalidate();
            }
        }

}

-------------------公布公共的属性-------------------- 复合控件