From a848d21519e51198fbbd59946a530db110fc6edc Mon Sep 17 00:00:00 2001
From: SmartRootsSrl <glicciardello@smart-roots.net>
Date: Wed, 27 May 2026 18:19:19 +0200
Subject: [PATCH] fix: hide CTF series when NumPrezziCFT < 30 (same behavior as
 old DevExpress)

---
 .../Services/Implementations/SkiaChartRendererV2.cs           | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CertReports.Syncfusion/Services/Implementations/SkiaChartRendererV2.cs b/CertReports.Syncfusion/Services/Implementations/SkiaChartRendererV2.cs
index 6fa6f5a..e6145ff 100644
--- a/CertReports.Syncfusion/Services/Implementations/SkiaChartRendererV2.cs
+++ b/CertReports.Syncfusion/Services/Implementations/SkiaChartRendererV2.cs
@@ -123,7 +123,9 @@ public static class SkiaChartRendererV2
         var seriesLegend = new List<(string name, SKColor color, bool dashed, float thickness)>();
         int otherColorIdx = 0;
 
-        if (seriesByUl.TryGetValue(0, out var ctfPoints) && ctfPoints.Count >= 2)
+        // Mostra la serie CTF solo se ha almeno 30 prezzi EOD (identico al vecchio DevExpress)
+        if (seriesByUl.TryGetValue(0, out var ctfPoints) && ctfPoints.Count >= 2
+            && data.GlobalMeta.NumPrezziCFT >= 30)
         {
             DrawSeriesV2(canvas, plotArea, ctfPoints, minDate, maxDate, minY, maxY, CertColor, 2.5f);
             seriesLegend.Add((data.Isin, CertColor, false, 2.5f));