From 65dc46fe68a6f8bc8b0a850fd42e671b58ee3997 Mon Sep 17 00:00:00 2001
From: Shane Neuville <shneuvil@microsoft.com>
Date: Fri, 22 Nov 2019 14:06:14 -0700
Subject: [PATCH] fix threadpool when compiling for 14393 (#8628)

---
 .../Xamarin.Forms.Controls.Issues.Shared/Issue1704.cs                | 5 +++++
 Xamarin.Forms.Controls/Xamarin.Forms.Controls.csproj                 | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1704.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1704.cs
index 612fa9d..86594a4 100644
--- a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1704.cs
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1704.cs
@@ -459,7 +459,12 @@ namespace Xamarin.Forms.Controls.Issues
 				_abortStressTest = false;
 
 				int.TryParse(_stressTestItertionEntry.Text, out _stressTestIterationCount);
+
+#if __UWP__
+				Windows.System.Threading.ThreadPool.RunAsync(delegate { runStressTest(); });
+#else
 				ThreadPool.QueueUserWorkItem(delegate { runStressTest(); });
+#endif
 			};
 
 			_stressTestProgressBar = new ProgressBar();
diff --git a/Xamarin.Forms.Controls/Xamarin.Forms.Controls.csproj b/Xamarin.Forms.Controls/Xamarin.Forms.Controls.csproj
index e979e9e..3d38858 100644
--- a/Xamarin.Forms.Controls/Xamarin.Forms.Controls.csproj
+++ b/Xamarin.Forms.Controls/Xamarin.Forms.Controls.csproj
@@ -19,6 +19,9 @@
     <WarningLevel>4</WarningLevel>
     <NoWarn>0114;0108;0109;4014;0649;0169;0472;0414;0168;0219;0429</NoWarn>
   </PropertyGroup>
+  <PropertyGroup Condition="$(TargetFramework.StartsWith('uap10.0'))">
+    <DefineConstants>$(DefineConstants);__UWP__</DefineConstants>
+  </PropertyGroup>
   <ItemGroup>
     <None Remove="BuildNumber.txt" />
   </ItemGroup>
-- 
2.7.4