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WebConfigurationManager.OpenMachineConfiguration Method (String)

Opens the machine-configuration file on the current computer as a Configuration object to allow read or write operations.

Namespace:  System.Web.Configuration
Assembly:  System.Web (in System.Web.dll)

public static Configuration OpenMachineConfiguration(
	string locationSubPath


Type: System.String
The application path to which the machine configuration applies.


A valid configuration file could not be loaded.

This method opens the machine-configuration file that is applicable to the directory specified by the locationSubPath parameter.

The following example shows how to access configuration information with the OpenMachineConfiguration method.

        // Show how to use OpenMachineConfiguration(string).
        // It gets the machine.config file applicabe to the
        // specified resource and displays section 
        // basic information. 
        static void OpenMachineConfiguration2()
            // Get the machine.config file applicabe to the
            // specified reosurce.
            System.Configuration.Configuration config =

            // Loop to get the sections. Display basic information.
            Console.WriteLine("Name, Allow Definition");
            int i = 0;
            foreach (ConfigurationSection section in config.Sections)
                    section.SectionInformation.Name + "\t" +
                i += 1;

            Console.WriteLine("[Total number of sections: {0}]", i);

            // Display machine.config path.
            Console.WriteLine("[File path: {0}]", config.FilePath);


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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