WintellectPowerShellHelper/WintellectPowerShellHelper/PrivateRegistry.cs
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using Microsoft.Win32;
using Microsoft.Win32.SafeHandles; using System; using System.Collections.Generic; using System.ComponentModel; using System.Linq; using System.Text; using System.Threading.Tasks; namespace WintellectPowerShellHelper { /// <summary> /// Helps make reading and writing the VS 2017+ private registry files easier. /// </summary> public static class PrivateRegistry { /// <summary> /// Reads a the specified value out of the specified privateregistry.bin file. /// </summary> /// <param name="fileName"> /// The Visual Studio 2017+ privateregistry.bin file. This must be the full /// path to the file including the instance id. /// </param> /// <param name="keyName"> /// The registry key to read. /// </param> /// <param name="value"> /// The value to read. /// </param> /// <returns> /// Null if the value does not exist or is not set. Otherwise, the registry value. /// </returns> /// <exception cref="ArgumentException"> /// Thrown if any paramaters are null or empty. /// </exception> public static String ReadValue(String fileName, String keyName, String value) { if (String.IsNullOrEmpty(fileName)) { throw new ArgumentException("fileName cannot be null"); } if (String.IsNullOrEmpty(keyName)) { throw new ArgumentException("key cannot be null"); } if (String.IsNullOrEmpty(value)) { throw new ArgumentException("value cannot be null"); } Int32 regHandle = OpenPrivateRegistry(fileName); String result = null; // Now this, my friends, is the beauty of a using statement! using (var safeRegistryHandle = new SafeRegistryHandle(new IntPtr(regHandle), true)) using (var appKey = RegistryKey.FromHandle(safeRegistryHandle)) using (var openedKey = appKey.OpenSubKey(keyName, true)) { if (openedKey != null) { Object val = openedKey.GetValue(value); result = val.ToString(); } } return result; } private static Int32 OpenPrivateRegistry(String regFileName) { Int32 returnCode = NativeMethods.RegLoadAppKey(regFileName, out var result, NativeMethods.RegSAM.Read, 0, 0); if (returnCode != 0) { throw new Win32Exception(returnCode, "RegLoadAppKey failed opening " + regFileName); } return result; } } } |