C#

stephen.darling wrote:

How can I setup my OnDraw() to display a different graph, based on what info is passed into my ecg object at runtime?

public enum Graphs {Graph1, Graph2, Graph3);

private Graphs graphs;

// This property will be seen at design time in your VS so you can set it. And VS will make you set it at runtime
public Graphs GraphType 
{
   get
   {
      return graphs;
   }
   set
   {
      if (graphs==value)
         return;
      graphs = value;
      this.Invalidate(); // This will force redrawing your custom control
   }
}

teknolog123 wrote:

So what can I do to prevent this?

I are Troll

public class ColorPicker
{
    public event EventHandler ColorChanged;

    private Color color;

    public ColorPicker()
    {
        color = Control.DefaultBackColor;
    }

    public Color Color
    {
        get { return color; }
        set
        {
            if (color != value)
            {
                color = value;
                OnColorChanged(EventArgs.Empty);
            }
        }
    }

    protected virtual void OnColorChanged(EventArgs e)
    {
        EventHandler eh = ColorChanged;
        if (eh != null)
            eh(this, e);
    }
}

public partial class FormMain : Form
{
    private ColorPicker colorPicker;

    public FormMain()
    {
        InitializeComponent();
        colorPicker = new ColorPicker();
        colorPicker.ColorChanged += new EventHandler(colorPicker_ColorChanged);
        propertyGrid.SelectedObject = colorPicker;
    }

    private void colorPicker_ColorChanged(object sender, EventArgs e)
    {
        BackColor = colorPicker.Color;
    }
}