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Editorial Team
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Asked: 2026-06-03T09:38:08+00:00

My goal is to share images, css, js, etc. across multiple websites that are

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My goal is to share images, css, js, etc. across multiple websites that are all hosted under the same parent virtual directory in IIS. Of course, I could hard code the images paths, but I’d hoped .NET had a method that could intelligently resolve URLs using the IIS configuration.

Here is my file/virtual directory structure:

Parent Site (Virtual Directory)
  default.aspx
  mypage.aspx
  otherpage.aspx
  images
    - logo.jpg
  css
    - site.css
  Subsite1 (Virtual Directory)
    - default.aspx
    - products.aspx
  Subsite2 (Virtual Directory)
    - default.aspx
    - products.aspx
    - miscellaneous.aspx

Parent Site, Subsite1, and Subsite2 are all virtual directories set up for http://parentsite.com, http://subsite1.com, and http://subsite2.com, respectively. I want to share images, js, css, etc. across these sites.

Is there a method in .NET that will resolve ~/images/logo.jpg as http://parentsite.com/images/logo.jpg when called from one of the subsites (e.g., http://subsite.com/default.aspx)?

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1 Answer

  1. Editorial Team

    In IIS6 and even IIS7 you can use a new virtual directory, call it “assets”, in all of the children sites.

    Updated site layout:

    Parent Site (Virtual Directory)
     default.aspx
     mypage.aspx
     otherpage.aspx
     assets
          -images
               - logo.jpg
          -css
               - site.css    

Subsite1 (Virtual Directory)
     - default.aspx
     - products.aspx
     assets (Virtual Directory to parent assets)

Subsite2 (Virtual Directory)
     - default.aspx
     - products.aspx
     - miscellaneous.aspx 
     assets (Virtual Directory to parent assets)

    With this structure you can share the same “assets” folder with all sites and still access it as “~/assets”. This allows you to use the assets with any of the domains that IIS is answering for.

    http://parentsite.com/assets

    http://childsite.com/assets

    A CDN is a good option but often times you would create seperate DNS enteries for each site like http://cdn.parentsite.com and http://cdn.childsite.com and then create some function to reference the files as http://cdn.(currentdomain).

    In my opinion, using an absolute or relative path to the shared assets folder will make life easier for you.

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