WebConfigurationManager.cs source code in C# .NET

                        Code:
                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / WebConfigurationManager.cs / 2 / WebConfigurationManager.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Configuration { 
    using System; 
    using System.Collections;
    using System.Collections.Specialized; 
    using System.Configuration;
    using System.Security;
    using System.Security.Permissions;
    using System.Web.Hosting; 

    [AspNetHostingPermission(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)] 
    public static class WebConfigurationManager { 

        public static NameValueCollection AppSettings { 
            get {
                return ConfigurationManager.AppSettings;
            }
        } 

        public static ConnectionStringSettingsCollection ConnectionStrings { 
            get { 
                return ConfigurationManager.ConnectionStrings;
            } 
        }

        public static object GetSection(string sectionName) {
            if (HttpConfigurationSystem.UseHttpConfigurationSystem)  { 
                return HttpConfigurationSystem.GetSection(sectionName);
            } 
            else { 
                return ConfigurationManager.GetSection(sectionName);
            } 
        }

        public static object GetSection(string sectionName, string path) {
            if (HttpConfigurationSystem.UseHttpConfigurationSystem)  { 
                return HttpConfigurationSystem.GetSection(sectionName, path);
            } 
            else { 
                throw new InvalidOperationException(SR.GetString(SR.Config_GetSectionWithPathArgInvalid));
            } 
        }

        public static object GetWebApplicationSection(string sectionName) {
            if (HttpConfigurationSystem.UseHttpConfigurationSystem)  { 
                return HttpConfigurationSystem.GetApplicationSection(sectionName);
            } 
            else { 
                return ConfigurationManager.GetSection(sectionName);
            } 
        }

        //
        // ************************************************* 
        // ** Static Management Functions to edit config **
        // ************************************************* 
        // 

        private static Configuration OpenWebConfigurationImpl( 
                WebLevel webLevel, ConfigurationFileMap fileMap, string path, string site, string locationSubPath,
                string server, string userName, string password, IntPtr userToken) {

            // In the hosted case, we allow app relative (~/....).  Otherwise, it must be absolute 
            VirtualPath virtualPath;
            if (HostingEnvironment.IsHosted) { 
                virtualPath = VirtualPath.CreateNonRelativeAllowNull(path); 
            }
            else { 
                virtualPath = VirtualPath.CreateAbsoluteAllowNull(path);
            }

            return WebConfigurationHost.OpenConfiguration(webLevel, fileMap, virtualPath, site, locationSubPath, 
                    server, userName, password, userToken);
        } 
 
        //
        // API extra notes: 
        //
        // OpenWebConfiguration(null)
        //  - Open root web.config
        // 
        // OpenWebConfiguration("/fxtest");
        //  - If calling from a hosted app (e.g. an ASP.NET page), it will open web.config at 
        //    virtual path "/fxtest" in the current running application (which gives the site) 
        //  - If calling from a non-hosted app (e.g. console app), it will do the same thing
        //    except it will use the default web site. 
        //
        // OpenWebConfiguration("/", "1", "fxtest")
        //  - Open web.config at the root of site "1" and get the config that applies to location "fxtest"
        // 

        // 
        // OpenMachineConfiguration 
        //
        public static Configuration OpenMachineConfiguration() { 
            return OpenWebConfigurationImpl(WebLevel.Machine, null, null, null, null,
                null, null, null, IntPtr.Zero);
        }
 
        public static Configuration OpenMachineConfiguration(string locationSubPath) {
            return OpenWebConfigurationImpl(WebLevel.Machine, null, null, null, locationSubPath, 
                null, null, null, IntPtr.Zero); 
        }
 
        public static Configuration OpenMachineConfiguration(string locationSubPath, string server) {
            return OpenWebConfigurationImpl(WebLevel.Machine, null, null, null, locationSubPath,
                server, null, null, IntPtr.Zero);
        } 

        public static Configuration OpenMachineConfiguration(string locationSubPath, string server, string userName, string password) { 
            return OpenWebConfigurationImpl(WebLevel.Machine, null, null, null, locationSubPath, 
                server, userName, password, IntPtr.Zero);
        } 

        [SecurityPermission(SecurityAction.Demand, Unrestricted = true)]
        public static Configuration OpenMachineConfiguration(string locationSubPath, string server, IntPtr userToken) {
            return OpenWebConfigurationImpl(WebLevel.Machine, null, null, null, locationSubPath, 
                server, null, null, userToken);
        } 
 
        public static Configuration OpenMappedMachineConfiguration(ConfigurationFileMap fileMap) {
            return OpenWebConfigurationImpl(WebLevel.Machine, fileMap, null, null, null, 
                null, null, null, IntPtr.Zero);
        }

        public static Configuration OpenMappedMachineConfiguration(ConfigurationFileMap fileMap, string locationSubPath) { 
            return OpenWebConfigurationImpl(WebLevel.Machine, fileMap, null, null, locationSubPath,
                null, null, null, IntPtr.Zero); 
        } 

        // 
        // OpenWebConfiguration
        //
        public static Configuration OpenWebConfiguration(string path) {
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, null, null, 
                null, null, null, IntPtr.Zero);
        } 
 
        public static Configuration OpenWebConfiguration(string path, string site) {
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, site, null, 
                null, null, null, IntPtr.Zero);
        }

        public static Configuration OpenWebConfiguration(string path, string site, string locationSubPath) { 
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, site, locationSubPath,
                null, null, null, IntPtr.Zero); 
        } 

        public static Configuration OpenWebConfiguration(string path, string site, string locationSubPath, string server) { 
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, site, locationSubPath,
                server, null, null, IntPtr.Zero);
        }
 
        public static Configuration OpenWebConfiguration(string path, string site, string locationSubPath, string server, string userName, string password) {
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, site, locationSubPath, 
                server, userName, password, IntPtr.Zero); 
        }
 
        [SecurityPermission(SecurityAction.Demand, Unrestricted = true)]
        public static Configuration OpenWebConfiguration(string path, string site, string locationSubPath, string server, IntPtr userToken) {
            return OpenWebConfigurationImpl(WebLevel.Path, null, path, site, locationSubPath,
                server, null, null, userToken); 
        }
 
        public static Configuration OpenMappedWebConfiguration(WebConfigurationFileMap fileMap, string path) { 
            return OpenWebConfigurationImpl(WebLevel.Path, fileMap, path, null, null,
                null, null, null, IntPtr.Zero); 
        }

        public static Configuration OpenMappedWebConfiguration(WebConfigurationFileMap fileMap, string path, string site) {
            return OpenWebConfigurationImpl(WebLevel.Path, fileMap, path, site, null, 
                null, null, null, IntPtr.Zero);
        } 
 
        public static Configuration OpenMappedWebConfiguration(WebConfigurationFileMap fileMap, string path, string site, string locationSubPath) {
            return OpenWebConfigurationImpl(WebLevel.Path, fileMap, path, site, locationSubPath, 
                null, null, null, IntPtr.Zero);
        }
    }
}
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