From 7295446fe1b8120190ba19a25b41d77f8bdb4be3 Mon Sep 17 00:00:00 2001
From: Yoh Deadfall <yoh.deadfall@hotmail.com>
Date: Fri, 12 May 2023 23:14:39 +0300
Subject: [PATCH] Ignore xmlns without CLR namespace on type resolution

---
 .../XamlIl/Runtime/XamlIlRuntimeHelpers.cs            | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Markup/Avalonia.Markup.Xaml/XamlIl/Runtime/XamlIlRuntimeHelpers.cs b/src/Markup/Avalonia.Markup.Xaml/XamlIl/Runtime/XamlIlRuntimeHelpers.cs
index f8eab5b654..a78af8e35c 100644
--- a/src/Markup/Avalonia.Markup.Xaml/XamlIl/Runtime/XamlIlRuntimeHelpers.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/XamlIl/Runtime/XamlIlRuntimeHelpers.cs
@@ -156,10 +156,13 @@ namespace Avalonia.Markup.Xaml.XamlIl.Runtime
                     throw new ArgumentException("Unable to resolve namespace for type " + qualifiedTypeName);
                 foreach (var entry in lst)
                 {
-                    var asm = Assembly.Load(new AssemblyName(entry.ClrAssemblyName));
-                    var resolved = asm.GetType(entry.ClrNamespace + "." + name);
-                    if (resolved != null)
-                        return resolved;
+                    if (entry.ClrAssemblyName is { Length: > 0 })
+                    {
+                        var asm = Assembly.Load(new AssemblyName(entry.ClrAssemblyName));
+                        var resolved = asm.GetType(entry.ClrNamespace + "." + name);
+                        if (resolved != null)
+                            return resolved;
+                    }
                 }
 
                 throw new ArgumentException(