Hello ,

I am glad to hear that you were able to find solution for your issue.

Please let me know if you need any further assistance  on this matter.

Hello,

We find a workaround.

If we simulate a mouse+click (setcursorpos+sendmessage) at the start of our software, the graphs are good.

seems that when ther is no "user" interaction, windows don't call all the ("paint") event you use to draw graph ?

When we click, the current graph isn't redraw. But all other graph after are ok.

I tryed invalidate but without result.

Here my code :

private void Slide2_Load(object sender, EventArgs e)
        {

            try
            {
                couleurs.Add("serie1", Color.Red);
                couleurs.Add("serie2", Color.Blue);
                couleurs.Add("serie3", Color.Green);
                ...
                DataTable dt = access.getSQLData();
                ultraChart1.ChartDrawItem += ultraChart1_ChartDrawItem;
                ultraChart1.Legend.Font = new Font(FontFamily.GenericSerif, 30);
                ultraChart1.Legend.Margins.Top = 200;
                ultraChart1.Legend.Margins.Bottom = 230;

                ultraChart1.DataSource = dt; // Or these 2 lines replaced by manual adding see below
                ultraChart1.DataBind();
                ((IChartComponent)this.ultraChart1).Invalidate(CacheLevel.LayerLevelCache);
               
            }
            catch (Exception exc)
            {
            }
        }

private void ultraChart1_ChartDrawItem(object sender, Infragistics.UltraChart.Shared.Events.ChartDrawItemEventArgs e)
        {
            try
            {
                Text t = e.Primitive as Text;
                if (t != null)
                {
                    if (t.Path == "Border.Title.Grid.X")
                    {
                        try
                        {
                            DateTime dt = DateTime.Parse(t.GetTextString());
                            t.SetTextString(dt.ToString("MM/yyyy"));
                        }
                        catch (Exception exc)
                        {
                        }
                    }
                    if (couleurs.ContainsKey(t.GetTextString()))
                    {
                        Infragistics.UltraChart.Shared.Styles.LabelStyle lab = t.GetLabelStyle();
                        lab.FontColor = couleurs[t.GetTextString()];                    
                        lab.Font = new Font(FontFamily.GenericSerif, 30);
                        t.SetLabelStyle(lab);
                    }
                }
                if (string.IsNullOrEmpty(e.Primitive.Path) || e.Primitive.Path.EndsWith("Legend") == false) { return; }
            }
            catch (Exception exc)
            {
             }

        }

// or manual adding to test :

   ultraChart1.Series.Clear();
            
            NumericSeries Serie = new NumericSeries();
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                Serie = new NumericSeries();
                Serie.Label = dt.Rows[i]["Day x"].ToString();
                Serie.Points.Add(new NumericDataPoint(float.Parse(dt.Rows[i]["serie1"].ToString()), "serie1", false));
                Serie.Points.Add(new NumericDataPoint(float.Parse(dt.Rows[i]["serie2"].ToString()), "serie2", false));
                Serie.Points.Add(new NumericDataPoint(float.Parse(dt.Rows[i]["serie3"].ToString()), "serie3", false));
              
 
                ultraChart1.Series.Add(Serie);
            }