Question

I am trying to draw a circle using Windows Form at runtime inside a label control. I am trying to display green or red circle and display the text(‘L1’ or ‘L2’) on top of it. Could you please help.

Answer 1

First you need to SetStyle in the Constructor so you can control the paint

  this.SetStyle(
                ControlStyles.UserPaint
                | ControlStyles.AllPaintingInWmPaint
                | ControlStyles.SupportsTransparentBackColor
                , true );

Then you are responsible for painting the entire label including the background and the text. Override OnPaint

protected override void OnPaint( PaintEventArgs e ) {
  Graphics g = e.Graphics;
  Brush b = new SolidBrush( this.ForeColor );
  SizeF sf = g.MeasureString( this.Text, this.Font );

  Padding p = Padding.Add( this.Padding, this.Margin );

  // do not forget to include the offset for you circle and text in the x, y position
  float x = p.Left;
  float y = p.Top;

  g.DrawString(  this.Text, this.Font, b, x, y );
}

After you have draw the label text, then use g.DrawEllipse to draw the circle you want and where you want. Then use g.DrawString to position the text above it.

Keep in mind that if you must provide everything bit of the paint that you set properties for so this is only to be used for the labels that conform to the standard you are going to set