Rewrite Rule to Rewrite All EXCEPT File Extension

Question

I've got a rule setup to rewrite everything going into a subdirectory like so:

<rule name="Forms Directory" stopProcessing="true">
    <match url="^forms/(.*)" />
    <action type="Redirect" url="forms.htm" redirectType="Permanent" />
</rule>

However, I want to make a slight change to allow it to access an ASP file in the forms folder. So I want to keep the same rule but exclude any .asp from matching the rule. I tried the following but couldn't get it to operate as expected:

<rule name="Forms Directory" stopProcessing="true">
    <match url="^forms/(.*)[^(.asp)]" />
    <action type="Redirect" url="forms.htm" redirectType="Permanent" />
</rule>

Any help on this would be greatly appreciated!

Answer 1

An additional condition that checks file extension solves this.

<rule name="Forms Directory">
    <match url="^forms/(.*)" />
    <conditions>
        <add input="{REQUEST_FILENAME}" pattern=".+\.asp$" negate="true" />
    </conditions>
    <action type="Rewrite" url="forms.htm" redirectType="Permanent" />
</rule>