From 760f13f0934f3192b147645606e5a72894ee3caf Mon Sep 17 00:00:00 2001
From: Giuseppe Lippolis <workgroupengineering@outlook.com>
Date: Wed, 4 Nov 2020 14:54:18 +0100
Subject: [PATCH] fixed null reference exception when using MultiBinding
 without StringFormat and Converter

---
 src/Markup/Avalonia.Markup/Data/MultiBinding.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Markup/Avalonia.Markup/Data/MultiBinding.cs b/src/Markup/Avalonia.Markup/Data/MultiBinding.cs
index 7aa1eed890..8b31f7b560 100644
--- a/src/Markup/Avalonia.Markup/Data/MultiBinding.cs
+++ b/src/Markup/Avalonia.Markup/Data/MultiBinding.cs
@@ -116,7 +116,8 @@ namespace Avalonia.Data
             }
 
             var culture = CultureInfo.CurrentCulture;
-            var converted = converter.Convert(values, targetType, ConverterParameter, culture);
+            var converted = converter?.Convert(values, targetType, ConverterParameter, culture)
+                ?? values.ToArray();
 
             if (converted == null)
             {