IIS URL Rewrite: Add trailing slash except for .html and .aspx

Question

Adding a trailing slash to all URLs through IIS URL Rewrite Module is widely spread, but how do I add exceptions for URLs that ends with .html and .aspx?

Today I have this:

<rule name="Add trailing slash" stopProcessing="true">   <match url="(.*[^/])$" />   <conditions>     <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />     <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />     <!-- Doesn't seem to be working -->     <!--<add input="{REQUEST_URI}" pattern="(.*?).html$" negate="true" />-->     <!--<add input="{REQUEST_URI}" pattern="(.*?).aspx$" negate="true" />-->   </conditions>   <action type="Redirect" redirectType="Permanent" url="{R:1}/" /> </rule> 

Answer 1

If you want something done right, you've got to do it yourself, obviously...

Here is the solution to my question:

<rule name="Add trailing slash" stopProcessing="true">   <match url="(.*[^/])$" />   <conditions>     <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />     <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />     <add input="{REQUEST_FILENAME}" pattern="(.*?)\.html$" negate="true" />     <add input="{REQUEST_FILENAME}" pattern="(.*?)\.aspx$" negate="true" />   </conditions>   <action type="Redirect" redirectType="Permanent" url="{R:1}/" /> </rule> 

Update: I blogged about this in more detail.