Use ordinal comparison when detecting event handler attributes. Fixes #24465 (#24471)

SteveSandersonMS · HaoK · commit d7a3ecf5e647 · 2020-08-06T17:53:52.000-07:00
diff --git a/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs b/src/Components/Components/src/RenderTree/RenderTreeDiffBuilder.cs
@@ -954,7 +954,7 @@ private static void InitializeNewAttributeFrame(ref DiffContext diffContext, ref
             // based on the common usage of attributes for DOM events.
             if ((newFrame.AttributeValue is MulticastDelegate || newFrame.AttributeValue is EventCallback) &&
                 newFrame.AttributeName.Length >= 3 &&
-                newFrame.AttributeName.StartsWith("on"))
+                newFrame.AttributeName.StartsWith("on", StringComparison.Ordinal))
             {
                 diffContext.Renderer.AssignEventHandlerId(ref newFrame);
             }

Original file line number	Diff line number	Diff line change
`@@ -954,7 +954,7 @@ private static void InitializeNewAttributeFrame(ref DiffContext diffContext, ref`
`954`	`954`	`// based on the common usage of attributes for DOM events.`
`955`	`955`	`if ((newFrame.AttributeValue is MulticastDelegate \|\| newFrame.AttributeValue is EventCallback) &&`
`956`	`956`	`newFrame.AttributeName.Length >= 3 &&`
`957`		`- newFrame.AttributeName.StartsWith("on"))`
	`957`	`+ newFrame.AttributeName.StartsWith("on", StringComparison.Ordinal))`
`958`	`958`	`{`
`959`	`959`	`diffContext.Renderer.AssignEventHandlerId(ref newFrame);`
`960`	`960`	`}`