1 files changed, 29 insertions, 0 deletions
diff --git a/release-notes/7.0/preview/api-diff/rc1/Microsoft.NETCore.App/7.0-rc1_System.Xml.md b/release-notes/7.0/preview/api-diff/rc1/Microsoft.NETCore.App/7.0-rc1_System.Xml.md
new file mode 100644
index 00000000..83acc744
--- /dev/null
+++ b/release-notes/7.0/preview/api-diff/rc1/Microsoft.NETCore.App/7.0-rc1_System.Xml.md
@@ -0,0 +1,29 @@
+# System.Xml
+
+``` diff
+ namespace System.Xml {
+     public class XmlDocument : XmlNode {
+-        public virtual XmlProcessingInstruction CreateProcessingInstruction(string target, string data);
++        public virtual XmlProcessingInstruction CreateProcessingInstruction(string target, string? data);
+     }
+     public class XmlProcessingInstruction : XmlLinkedNode {
+-        protected internal XmlProcessingInstruction(string target, string data, XmlDocument doc);
++        protected internal XmlProcessingInstruction(string target, string? data, XmlDocument doc);
+-        public string Data { get; set; }
++        [AllowNullAttribute]
++        public string Data { get; set; }
+-        public override string InnerText { get; set; }
++        [AllowNullAttribute]
++        public override string InnerText { get; set; }
+-        public string? Target { get; }
++        public string Target { get; }
+     }
+     public abstract class XmlResolver {
++        public static XmlResolver ThrowingResolver { get; }
+     }
+-    public class XmlSecureResolver : XmlResolver
++    [ObsoleteAttribute("XmlSecureResolver is obsolete. Use XmlResolver.ThrowingResolver instead when attempting to forbid XML external entity resolution.", DiagnosticId="SYSLIB0047", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
++    public class XmlSecureResolver : XmlResolver
+ }
+```
+