设置Label的属性BorderStyle = None;//这样才能看到效果
在Label的Paint事件里调用如下方法：
private void label_Paint(object sender, PaintEventArgs e)
{
DrawRoundRect(e.Graphics, label);
DrawString(e.Graphics, label);
}
private void DrawRoundRect(Graphics graphics, Label label)
{
float X = float.Parse(label.Width.ToString()) - 1;
float Y = float.Parse(label.Height.ToString()) - 1;
PointF[] points = {
new PointF(2, 0),
new PointF(X-2, 0),
new PointF(X-1, 1),
new PointF(X, 2),
new PointF(X, Y-2),
new PointF(X-1, Y-1),
new PointF(X-2, Y),
new PointF(2, Y),
new PointF(1, Y-1),
new PointF(0, Y-2),
new PointF(0, 2),
new PointF(1, 1)
};
GraphicsPath path = new GraphicsPath();
path.AddLines(points);
Pen pen = new Pen(Color.FromArgb(150, Color.Gray), 1);
pen.DashStyle = DashStyle.Solid;
graphics.DrawPath(pen, path);
PathGradientBrush p = new PathGradientBrush(path);
p.CenterColor = Color.White;
Color[] color = { Color.LightGray };
p.SurroundColors = color;
graphics.FillPath(p, path);
}
private void DrawString(Graphics graphics, Label label)
{
Font font = new Font("宋体", 10.0f, FontStyle.Regular);
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Center;
stringFormat.LineAlignment = StringAlignment.Center;
Brush brush = new SolidBrush(Color.Black);
RectangleF rect = new RectangleF(0, 0, label.Width, label.Height);
graphics.DrawString(label.Text, font, brush, rect, stringFormat);
}
原文:http://blog.sina.com.cn/s/blog_5421dfd20100f9br.html