How to prevent IIS not to change backslashes with forward slashes

Question

I am using WebAPI2 and I have a route "Products/{Id}/details". When Id contains \ , IIS changes it to /. For example pr\p is changed to pr/p and it "spoils" the uri. I want to know how to prevent changing ** to **/, or are there any other workarounds?

Thanks in advance for your help.

I have checked it using developer tools and convinced that my browser doesn't manipulate the url. — Sargis Koshkaryan, Apr 22 '15 at 10:16
Check the actual url used in the "Network" panel of your developer tools. I assume that "\" is invalid in a url. If need to encode it as `%5C`. — haim770, Apr 22 '15 at 10:16
@SargisKoshkaryan did you find a solution w/o hacking with urlrewrite? — Shrike, Mar 23 '17 at 10:09

score 1 · Answer 1 · answered Nov 19 '15 at 10:35

This looks useful:

<rule name="KeepBackslashes" stopProcessing="true">
    <match url="(.*)" />
    <action type="Rewrite" url="http://HOST:PORT/{UrlDecode:{C:1}}" logRewrittenUrl="true" />
    <conditions>
        <add input="{UNENCODED_URL}" pattern="/(.*?)($|\?)" />
    </conditions>
</rule>

How to prevent IIS not to change backslashes with forward slashes

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