From a76f2fd918c7628422faa7a4882b794ee09de70b Mon Sep 17 00:00:00 2001
From: Oski Kervinen <oski.kervinen@m-files.com>
Date: Mon, 30 Jan 2023 20:44:13 +0200
Subject: [PATCH] Fix exception when multiple projects reference the same
 .vcxitems project (#445)

---
 .../ProjectLoading/ProjectGraphProjectLoader.cs                 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Microsoft.VisualStudio.SlnGen/ProjectLoading/ProjectGraphProjectLoader.cs b/src/Microsoft.VisualStudio.SlnGen/ProjectLoading/ProjectGraphProjectLoader.cs
index d13a650e..7093ad9c 100644
--- a/src/Microsoft.VisualStudio.SlnGen/ProjectLoading/ProjectGraphProjectLoader.cs
+++ b/src/Microsoft.VisualStudio.SlnGen/ProjectLoading/ProjectGraphProjectLoader.cs
@@ -64,7 +64,7 @@ public void LoadProjects(IEnumerable<string> projectPaths, ProjectCollection pro
                             _ = CreateProject(projectPath.FullName, globalProperties, projectCollection);
                         }
                     }
-                    else if (importPath.EndsWith(ProjectFileExtensions.VcxItems))
+                    else if (importPath.EndsWith(ProjectFileExtensions.VcxItems) && !LoadedProjects.ContainsKey(importPath))
                     {
                         _ = CreateProject(importPath, globalProperties, projectCollection);
                     }