C# 自定义控件，怎么加上选中时的效果

Question

类似于按钮选中时颜色会变化

Answer 1

自定义什么了？lable textbox gridview combobox？

Answer 2

自定义了一个控件，控件里面包含Panel PictureBox,label

Answer 3

private Color pictureBoxBorderColor = Color.Black;        private void pictureBox1_Paint(object sender, PaintEventArgs e)
        {
            ControlPaint.DrawBorder(e.Graphics,
                                this.pictureBox1.ClientRectangle,
                                pictureBoxBorderColor, 1, ButtonBorderStyle.Solid,
                                pictureBoxBorderColor, 1, ButtonBorderStyle.Solid,
                                pictureBoxBorderColor, 1, ButtonBorderStyle.Solid,
                                pictureBoxBorderColor, 1, ButtonBorderStyle.Solid);
        }        private void pictureBox1_Click(object sender, EventArgs e)
        {
            if (pictureBoxBorderColor == Color.Black)
            {
                pictureBoxBorderColor = Color.Red;
            }
            else
            {
                pictureBoxBorderColor = Color.Black;
            }
            pictureBox1.Invalidate();
            pictureBox1.Update();
        }

Answer 4

panel中多个picturebox  红边框代表选中 黑边框代表未选中private void Init()
        {
            foreach (var item in panel1.Controls)
            {
                if(item.GetType()==typeof(PictureBox))
                {
                    PictureBox picture = (PictureBox)item;
                    picture.Paint += new PaintEventHandler(picturePaint);
                    picture.Click += new EventHandler(pictureClick);                    pictureColorDic.Add(picture, Color.Black);
                }
            }
        }        private Dictionary<PictureBox, Color> pictureColorDic = new Dictionary<PictureBox, Color>();        void picturePaint(object sender, PaintEventArgs e)
        {
            var pictureControl = (sender as PictureBox);            var color = pictureColorDic.FirstOrDefault(a => a.Key == pictureControl).Value;
            if (color == null) { return; }            ControlPaint.DrawBorder(e.Graphics, pictureControl.ClientRectangle,
                color, 1, ButtonBorderStyle.Solid,
                color, 1, ButtonBorderStyle.Solid,
                color, 1, ButtonBorderStyle.Solid,
                color, 1, ButtonBorderStyle.Solid);        }        void pictureClick(object sender, EventArgs e)
        {
            var pictureControl = (sender as PictureBox);            var dic = pictureColorDic.FirstOrDefault(a => a.Key == pictureControl);
            if (dic.Key != null)
            {
                pictureColorDic.Remove(pictureControl);
                if (dic.Value == Color.Black)
                {
                    pictureColorDic.Add(pictureControl, Color.Red);
                }
                else
                {
                    pictureColorDic.Add(pictureControl, Color.Black);
                }
            }
            pictureControl.Invalidate();
            pictureControl.Update();
        }