C# 学习写控件时一直没效果。解决方案

C# 学习写控件时一直没效果。。。

生成控件，可是没效果，连Text都看不见，和设计时候默认的那个UserControl一样，请问哪出了问题

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Drawing;

using System.Data;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Drawing.Drawing2D;


namespace _自定义按钮

{

    public partial class transparentButton : UserControl

    {

        public transparentButton()

        {

            InitializeComponent();

        }

        #region 公共字段


        public static SmoothingMode sMode;

        public static bool btClick = true;

        public static int pub_degree = 20;//四个角弧度的大小范围

   

        #endregion




        #region 属性



        


        private int TcornerDegree = 2;

        [Browsable(true), Category("按钮的属性设置"), Description("按钮四个角的弧度")]

        public int cornerDegree

        {

            get { return TcornerDegree; }

            set {

                TcornerDegree = value;

                if (this.Width > this.Height)

                    pub_degree = (int)(this.Height / 2);

                else

                    pub_degree = (int)(this.Width) / 2;

                if (TcornerDegree <= 0)

                    TcornerDegree = 1;

                if (TcornerDegree> pub_degree)

                    TcornerDegree = pub_degree;

                if (TcornerDegree > 0)

                    this.Invalidate();

            }

        }



       private Color TshineColor = Color.Red;

        [Browsable(true), Category("按钮的属性设置"), Description("按钮的光泽度颜色")]

        public Color shineColor

        {

            get { return TshineColor; }

            set

            {

                TshineColor = value;

                this.Invalidate();

            }

        }



     



        private int TtranparentDegree = 2;

        [Browsable(true), Category("按钮的属性设置"), Description("按钮的透明度数")]

        public int transparentDegree

        {

            get { return TtranparentDegree; }

            set{TtranparentDegree=value;

            if(TtranparentDegree>20)

            TtranparentDegree=20;

            if(TtranparentDegree<0)