1

Yes.Infrastructure/Rss/XDocumentExtensions.cs

@@ -0,0 +1,15 @@
+namespace Yes.Infrastructure.Rss
+{
+    public static class XDocumentExtensions
+    {
+        public static string ToStringWithDeclaration(this XDocument doc)
+        {
+            if (doc.Declaration == null)
+                return doc.ToString();
+
+            using var writer = new StringWriter();
+            doc.Save(writer);
+            return writer.ToString();
+        }
+    }
+}