SDKLoader.cs

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;

namespace SampleAddIn
{
	internal class SDKLoader
	{
		private static string FindInstalledTRIMPath()
		{
			RegistryKey[] registryHives =
			{
			Registry.LocalMachine,
			Registry.CurrentUser
		};

			string[] registryPaths =
			{
			@"SOFTWARE\Micro Focus\Content Manager\MSISettings",
			@"SOFTWARE\Hewlett-Packard\HP TRIM\MSISettings"
		};

			string INSTALLDIR = "INSTALLDIR";

			foreach (var hive in registryHives)
			{
				foreach (var regPath in registryPaths)
				{
					RegistryKey msiSettingsKey = hive.OpenSubKey(regPath);
					if (msiSettingsKey != null)
					{
						string installDir = msiSettingsKey.GetValue(INSTALLDIR) as string;
						if (installDir != null && installDir.Length > 0)
						{
							return installDir;
						}
					}
				}
			}

			return null;
		}

		private static Assembly AssemblyResolveEventHandler(object sender, ResolveEventArgs args, string pathToSdkDll)
		{
			if (args.Name.Contains("HP.HPTRIM.SDK"))
			{
				Assembly assembly = Assembly.LoadFrom(pathToSdkDll);
				return assembly;
			}
			return null;
		}

		public static void load()
		{
			string installDir = FindInstalledTRIMPath();

			if (string.IsNullOrWhiteSpace(installDir))
			{
				throw new Exception("Unable to find path to HP.HPTRIM.SDK in registry.");
			}
			string pathToSdkDll = Path.Combine(installDir, "HP.HPTRIM.SDK.dll");
			AppDomain.CurrentDomain.AssemblyResolve += (sender, e) => AssemblyResolveEventHandler(sender, e, pathToSdkDll);
		}
	}
}