From c922a8baca9caa5a13b43d965d4dc0f640a5e978 Mon Sep 17 00:00:00 2001
From: miXin <52082254@qq.com>
Date: Tue, 3 Mar 2026 10:50:33 +0800
Subject: [PATCH] Implement IEquatable in autogenerated C# enums

Updated C# enum generation to implement IEquatable interface and added Equals method.

Signed-off-by: miXin <52082254@qq.com>
---
 crates/codegen/src/csharp.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/crates/codegen/src/csharp.rs b/crates/codegen/src/csharp.rs
index f40bf9148a0..af87070a58a 100644
--- a/crates/codegen/src/csharp.rs
+++ b/crates/codegen/src/csharp.rs
@@ -1413,13 +1413,14 @@ fn autogen_csharp_plain_enum(enum_type_name: String, enum_type: &PlainEnumTypeDe
     let mut output = CsharpAutogen::new(namespace, &[], false);
 
     writeln!(output, "[SpacetimeDB.Type]");
-    writeln!(output, "public enum {enum_type_name}");
+    writeln!(output, "public enum {enum_type_name} : IEquatable<{enum_type_name}>");
     indented_block(&mut output, |output| {
         for variant in &*enum_type.variants {
             let variant = variant.deref().to_case(Case::Pascal);
             writeln!(output, "{variant},");
         }
-    });
+        writeln!(output);
+        writeln!(output, "public bool Equals({enum_type_name} other) => this == other;");
 
     output.into_inner()
 }