UrlRewriter.net Expression Examples - urlrewriter.net

Question

I need some web.config examples for each expression types below :
$number
The last substring matched by group number number.
$<name>
The last substring matched by group named name matched by (?< name > ).
${property}
The value of the property when the expression is evaluated.
${transform(value)}
The result of calling the transform on the specified value.
${map:value}
The result of mapping the specified value using the map. Replaced with empty string if no mapping exists.
${map:value|default}
The result of mapping the specified value using the map. Replaced with the default if no mapping exists.
Sample:
<rewriter>
<if url="/tags/(.+)" rewrite="/tagcloud.aspx?tag=$1" />
<!-- same thing as <rewrite url="/tags/(.+)" to="/tagcloud.aspx?tag=$1" /> -->
</rewriter>
Thank you very much !

Answer 1

Here's what I found/guessed. Not tested.
$number : http://urlrewriter.net/index.php/support/using
<rewrite url="^(.*)/(\?.+)?$" to="$1/default.aspx$2?" />
$1 matches (.*)
$2 matches (\?.+)
$< name > : this one I'm not so sure on the regex, couldn't find anything in documentation
<rewrite url="^(?<group1>(.*))/(\?.+)?$" to="$<group1>/default.aspx$2?" />
$<group1> matches
${property} : http://urlrewriter.net/index.php/support/reference/actions/set-property
<set property="branch" value="$3" />
<rewrite to="/showbranch.aspx?branch=${branch}" />
${transform(value)} : http://urlrewriter.net/index.php/support/reference/transforms
<set property="transform-name" value="lower" />
<set property="value-to-transform" value="THIS WAS UPPER CASE" />
<redirect to="/WebForm1.aspx?q=${encode(${${transform-name}(${value-to-transform})})}" />
results in "/WebForm1.aspx?q=this+was+upper+case"
${map:value} : http://urlrewriter.net/index.php/support/reference/transforms/static
<mapping name="areas">
<map from="sydney" to="1" />
<map from="melbourne" to="2" />
<map from="brisbane" to="3" />
</mapping>
<rewrite to="/area.aspx?area=${areas:$3}" />
results in "/area.aspx?area=brisbane"
${map:value|default}
<mapping name="areas">
<map from="sydney" to="1" />
<map from="melbourne" to="2" />
<map from="brisbane" to="3" />
</mapping>
<rewrite to="/area.aspx?area=${areas:$4|perth}" />
results in "/area.aspx?area=perth"