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Asked: 2026-05-10T13:32:27+00:00

In .net frameworks 1.1, I use System.Configuration.ConfigurationSettings.AppSettings[name]; for application settings. But in .Net 2.0,

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In .net frameworks 1.1, I use 

System.Configuration.ConfigurationSettings.AppSettings['name'];

for application settings. But in .Net 2.0, it says ConfigurationSettings is obsolete and to use ConfigurationManager instead. So I swapped it out with this:

System.Configuration.ConfigurationManager.AppSettings['name'];

The problem is, ConfigurationManager was not found in the System.Configuration namespace. I’ve been banging my head against the wall trying to figure out what I’m doing wrong. Anybody got any ideas?

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1 Answer

  1. You have to reference the System.configuration assembly (note the lowercase)

    I don’t know why this assembly is not added by default to new projects on Visual Studio, but I find myself having the same problem every time I start a new project. I always forget to add the reference.

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