RegistryConfigurationProvider.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / TransactionBridge / Microsoft / Transactions / Wsat / Protocol / RegistryConfigurationProvider.cs / 1 / RegistryConfigurationProvider.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

// Implement the ConfigurationProvider base class for the system registry 

using System; 
 
using System.ServiceModel.Channels;
using System.IO; 
using System.Security;
using System.Security.AccessControl;

using Microsoft.Transactions.Bridge; 
using Microsoft.Win32;
 
namespace Microsoft.Transactions.Wsat.Protocol 
{
    class RegistryConfigurationProvider : ConfigurationProvider 
    {
        RegistryKey regKey;

        public RegistryConfigurationProvider(RegistryKey rootKey, string subKey) 
        {
            try 
            { 
                if (rootKey != null)
                { 
                    // This can return null if the key does not exist
                    this.regKey = rootKey.OpenSubKey(subKey,
                                                     RegistryKeyPermissionCheck.ReadSubTree,
                                                     RegistryRights.ReadKey); 
                }
            } 
            catch (SecurityException e) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError( 
                    new ConfigurationProviderException(SR.GetString(SR.RegistryKeyOpenSubKeyFailed,
                                                                    subKey, rootKey.Name, e.Message), e));
            }
            catch (IOException e) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError( 
                    new ConfigurationProviderException(SR.GetString(SR.RegistryKeyOpenSubKeyFailed, 
                                                                    subKey, rootKey.Name, e.Message), e));
            } 
        }

        public override void Dispose()
        { 
            if (this.regKey != null)
            { 
                this.regKey.Close(); 
                this.regKey = null;
            } 
        }

        object ReadValue(string value, object defaultValue)
        { 
            if (this.regKey == null)
                return defaultValue; 
 
            try
            { 
                return this.regKey.GetValue(value, defaultValue);
            }
            catch (SecurityException e)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
                    new ConfigurationProviderException(SR.GetString(SR.RegistryKeyGetValueFailed, 
                                                                    value, this.regKey.Name, e.Message), e)); 
            }
            catch (IOException e) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
                    new ConfigurationProviderException(SR.GetString(SR.RegistryKeyGetValueFailed,
                                                                    value, this.regKey.Name, e.Message), e)); 
            }
        } 
 
        public override int ReadInteger(string value, int defaultValue)
        { 
            object regValue = ReadValue(value, defaultValue);
            if (regValue == null || !(regValue is Int32))
                return defaultValue;
 
            return (int)regValue;
        } 
 
        public override string ReadString(string value, string defaultValue)
        { 
            object regValue = ReadValue(value, defaultValue);
            if (regValue == null)
                return defaultValue;
 
            string regString = regValue as string;
            if (regString == null) 
                return defaultValue; 

            return regString; 
        }

        public override string[] ReadMultiString(string value, string[] defaultValue)
        { 
            object regValue = ReadValue(value, defaultValue);
            if (regValue == null) 
                return defaultValue; 

            string[] regMulti = regValue as string[]; 
            if (regMulti == null)
                return defaultValue;

            return regMulti; 
        }
 
        public override ConfigurationProvider OpenKey(string key) 
        {
            return new RegistryConfigurationProvider(this.regKey, key); 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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