From fcada170afa42da3b9ded5704bbcd8489edf1a20 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Wed, 3 Aug 2022 18:24:46 +0200
Subject: [PATCH] Added AvaloniaLocator.GetRequiredService.

---
 src/Avalonia.Base/AvaloniaLocator.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Avalonia.Base/AvaloniaLocator.cs b/src/Avalonia.Base/AvaloniaLocator.cs
index 0510852ea7..8ec245507b 100644
--- a/src/Avalonia.Base/AvaloniaLocator.cs
+++ b/src/Avalonia.Base/AvaloniaLocator.cs
@@ -125,6 +125,16 @@ namespace Avalonia
         {
             return (T?) resolver.GetService(typeof (T));
         }
+
+        public static object GetRequiredService(this IAvaloniaDependencyResolver resolver, Type t)
+        {
+            return resolver.GetService(t) ?? throw new InvalidOperationException($"Unable to locate '{t}'.");
+        }
+
+        public static T GetRequiredService<T>(this IAvaloniaDependencyResolver resolver)
+        {
+            return (T?)resolver.GetService(typeof(T)) ?? throw new InvalidOperationException($"Unable to locate '{typeof(T)}'.");
+        }
     }
 }