Fix null warning

Morten Nielsen · Morten Nielsen · commit 9e126abd67a1 · 2025-09-09T16:16:08.000-07:00
diff --git a/src/WinUIExSample/MockOAuthServer.cs b/src/WinUIExSample/MockOAuthServer.cs
@@ -90,7 +90,7 @@ Signed in. You can close this window now.</div></body></html>
 """);
                             foreach (var key in context.Request.QueryString.AllKeys)
                             {
-                                writer.WriteLine($"<input type=\"hidden\" name=\"{key}\" value=\"{context.Request.QueryString[key].Replace("\"", "&quot;")}\" />");
+                                writer.WriteLine($"<input type=\"hidden\" name=\"{key}\" value=\"{context.Request.QueryString[key]?.Replace("\"", "&quot;")}\" />");
                             }
                             writer.WriteLine("</form></div>");
                             writer.WriteLine("<hr/><b>Values sent:</b><br/>");

Original file line number	Diff line number	Diff line change
`@@ -90,7 +90,7 @@ Signed in. You can close this window now.</div></body></html>`
`90`	`90`	`""");`
`91`	`91`	`foreach (var key in context.Request.QueryString.AllKeys)`
`92`	`92`	`{`
`93`		`- writer.WriteLine($"<input type=\"hidden\" name=\"{key}\" value=\"{context.Request.QueryString[key].Replace("\"", """)}\" />");`
	`93`	`+ writer.WriteLine($"<input type=\"hidden\" name=\"{key}\" value=\"{context.Request.QueryString[key]?.Replace("\"", """)}\" />");`
`94`	`94`	`}`
`95`	`95`	`writer.WriteLine("</form></div>");`
`96`	`96`	`writer.WriteLine("<hr/><b>Values sent:</b><br/>");`