url rewrite robots,sitemap

<rule name="Robots" stopProcessing="true">
    <match url="(.*)robots\.txt" />
    <action type="Rewrite" url="/Controls/Resource/GetFile?code=robots" />
</rule>
<rule name="Sitemap.xml" stopProcessing="true">
    <match url="(.*)sitemap\.xml" />
    <action type="Rewrite" url="/Controls/Resource/GetFile?code=sitemap" />
</rule>