From 9c6fd8d1f42f8a8501b9e3c2cdf5002f5ec317a1 Mon Sep 17 00:00:00 2001
From: James Newton-King <james@newtonking.com>
Date: Thu, 2 Nov 2023 11:58:43 +0800
Subject: [PATCH] Fix metrics chart when there is a NaN value (#645)

---
 .../Components/Controls/PlotlyChart.razor.cs               | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/Aspire.Dashboard/Components/Controls/PlotlyChart.razor.cs b/src/Aspire.Dashboard/Components/Controls/PlotlyChart.razor.cs
index 33d5a12e2d1..e2b40538ceb 100644
--- a/src/Aspire.Dashboard/Components/Controls/PlotlyChart.razor.cs
+++ b/src/Aspire.Dashboard/Components/Controls/PlotlyChart.razor.cs
@@ -373,6 +373,13 @@ private static bool TryCalculatePoint(List<DimensionScope> dimensions, DateTime
             pointValue += dimensionValue;
         }
 
+        // JS interop doesn't support serializing NaN values.
+        if (double.IsNaN(pointValue))
+        {
+            pointValue = default;
+            return false;
+        }
+
         return hasValue;
     }