Top 20 NuGet appconfig Packages

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Easily manage configuration within your .net application
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.Net Dev Utils
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A lightweight library to load application configuration settings into a dictionary.
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Wrapper class library for WinRT Roamin/Local settings.
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Allows to generate app.config file from configuration class
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A micro-module for parsing configuration values from App.config and other .NET configuration files. Feel free to bundle this module with your core library (using any packer, like ILMerge, ILRepack, LibZ, etc.), use micro-assembly as it is, or just take the source code and use it in your project.
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A micro-module for parsing JSON configuration values from App.config and other .NET configuration files. Feel free to bundle this module with your core library (using any packer, like ILMerge, ILRepack, LibZ, etc.), use micro-assembly as it is, or just take the source code and use it in your projec...
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Simple syntactic sugar for ConfigurationManager