// assemblyName has to be fully specified name.
        // A.k.a, for v1.0/v1.1 assemblies, it should be "name, Version=xx, Culture=xx, PublicKeyToken=xx".
        // For v2.0 assemblies, it should be "name, Version=xx, Culture=xx, PublicKeyToken=xx, ProcessorArchitecture=xx".
        // If assemblyName is not fully specified, a random matching assembly will be uninstalled.
        /// <summary>
        /// Uninstalls the assembly.
        /// </summary>
        /// <param name="assemblyName">Name of the assembly.</param>
        /// <param name="reference">The reference.</param>
        /// <param name="disp">The disp.</param>
        public static void UninstallAssembly(String assemblyName, InstallReference reference, out AssemblyCacheUninstallDisposition disp)
        {
            AssemblyCacheUninstallDisposition dispResult = AssemblyCacheUninstallDisposition.Uninstalled;

            if (reference != null)
            {
                if (!InstallReferenceGuid.IsValidGuidScheme(reference.GuidScheme))
                {
                    throw new ArgumentException("Invalid reference guid.", "guid");
                }
            }

            IAssemblyCache ac = null;

            int hr = Utils.CreateAssemblyCache(out ac, 0);

            if (hr >= 0)
            {
                hr = ac.UninstallAssembly(0, assemblyName, reference, out dispResult);
            }

            if (hr < 0)
            {
                Marshal.ThrowExceptionForHR(hr);
            }

            disp = dispResult;
        }
        /// <summary>
        /// Installs the assembly.
        /// </summary>
        /// <param name="assemblyPath">The assembly path.</param>
        /// <param name="reference">The reference.</param>
        /// <param name="flags">The flags.</param>
        /// <returns></returns>
        public static int InstallAssembly(String assemblyPath, InstallReference reference, AssemblyCommitFlags flags)
        {
            if (reference != null)
            {
                if (!InstallReferenceGuid.IsValidGuidScheme(reference.GuidScheme))
                {
                    throw new ArgumentException("Invalid reference guid.", "guid");
                }
            }

            IAssemblyCache ac = null;

            int hr = 0;

            hr = Utils.CreateAssemblyCache(out ac, 0);
            if (hr >= 0)
            {
                hr = ac.InstallAssembly((int)flags, assemblyPath, reference);
            }

            if (hr < 0)
            {
                Marshal.ThrowExceptionForHR(hr);
            }
            return(hr);
        }