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Editorial Team
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Asked: 2026-06-06T08:13:12+00:00

I want to use Web.Debug.config and Web.Release.config each. But it does not work in

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I want to use Web.Debug.config and Web.Release.config each.

But it does not work in Visual Studio 2010 And it works on actual server after deployment.

Web.Release.config

<appSettings>
    <add key="GOOGLE_MERCHANT_ID" value="LIVE_GOOGLE_MERCHANT_ID" xdt:Transform="Insert" xdt:Locator="Match(key)" />
</appSettings>

Web.Debug.config

<appSettings>
    <add key="GOOGLE_MERCHANT_ID" value="DEBUG_GOOGLE_MERCHANT_ID" xdt:Transform="Insert" xdt:Locator="Match(key)" />
</appSettings>

I have like above config files and I try to echo on screen the config value.

string t = WebConfigurationManager.AppSettings["GOOGLE_MERCHANT_ID"]; Response.Write(t);

On Visual studio,

enter image description here

set as Release mode, and F5 (also I tried Build Solution(F6)) but it doesn’t print anything.

So I try to Deployment package and install on server and run then it prints the right value.

How I do for that in Visual studio? I want to make sure everything OK before deploy package.

Please advise me~

Thank you!

[Edit]

Now I get it, thank you for everyone who gave me nice answer!

May I ask one more question please?

then what’s this for?

enter image description here

If I change to Release or Debug then what effect to my project?

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1 Answer

  1. Editorial Team

    See this post https://stackoverflow.com/a/5734829/611288

    As Jimmy says, the web.config transforms are only applied during the Web Publish Pipleline

    Jimmy also supplies the following link for a hack: http://sedodream.com/2010/10/21/ASPNETWebProjectsWebdebugconfigWebreleaseconfig.aspx

    Alternatively, create a test deploy that deploys locally and test the config settings there.

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