跨 Appdomain 对象共享

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Text;

namespace SGSMWebTest
{
    public partial class Default : System.Web.UI.Page
    {
        private static FirstEliteValidateLib.Validator MyValidator = null;

        protected void Page_Load(object sender, EventArgs e)
        {
            var sb = new StringBuilder();
            _AppDomain defaultAppDomain;
            var appdomainList = CLRUtil.EnumAppDomains(out defaultAppDomain).ToList();
            sb.AppendLine("***********Start**************");

            foreach (var appdomain in appdomainList)
                sb.AppendLine("AppDomainName:" + appdomain.FriendlyName + (appdomain.FriendlyName == defaultAppDomain.FriendlyName ? " [DefaultAppDomain]" : string.Empty));

            sb.AppendLine("***********End**************");
            sb.AppendLine("Current Appdomain:" + AppDomain.CurrentDomain.FriendlyName);

            if (defaultAppDomain.GetData("Validator") == null)
            {
                MyValidator = new FirstEliteValidateLib.Validator();
                defaultAppDomain.SetData("Validator", MyValidator);
                sb.AppendLine("Set Validator");
            }
            else
            {
                MyValidator = defaultAppDomain.GetData("Validator") as FirstEliteValidateLib.Validator;
                if(MyValidator != null)
                    sb.AppendLine("Validator Get Success");
                else
                    sb.AppendLine("Validator Get null");
            }

            Label1.Text = "<pre>" + sb.ToString() + "</pre>";
        }

        public static class CLRUtil
        {
            public static List<_AppDomain> EnumAppDomains(out _AppDomain defaultAppDomain)
            {
                // Obtain ICLRMetaHost interface
                object objHost;
                int hr = CLRCreateInstance(ref CLSID_CLRMetaHost, ref IID_CLRMetaHost, out objHost);
                if (hr < ) throw new COMException("Cannot create meta host", hr);
                var host = (ICLRMetaHost)objHost;

                // Obtain ICLRRuntimeInfo interface
                var vers = Environment.Version;
                var versString = string.Format("v{0}.{1}.{2}", vers.Major, vers.Minor, vers.Build);
                var objRuntime = host.GetRuntime(versString, ref IID_CLRRuntimeInfo);
                var runtime = (ICLRRuntimeInfo)objRuntime;
                bool started;
                uint flags;
                runtime.IsStarted(out started, out flags);
                if (!started) throw new COMException("CLR not started??");

                // Obtain legacy ICorRuntimeHost interface and iterate appdomains
                var result = new List<_AppDomain>();
                var V2Host = (ICorRuntimeHost)runtime.GetInterface(ref CLSID_CorRuntimeHost, ref IID_CorRuntimeHost);
                V2Host.GetDefaultDomain(out defaultAppDomain);
                IntPtr hDomainEnum;
                V2Host.EnumDomains(out hDomainEnum);
                for (; ; )
                {
                    _AppDomain domain = null;
                    V2Host.NextDomain(hDomainEnum, out domain);
                    if (domain == null) break;
                    result.Add(domain);
                }
                V2Host.CloseEnum(hDomainEnum);
                return result;
            }

            private static Guid CLSID_CLRMetaHost = new Guid(0x9280188d, 0xe8e, 0x4867, 0xb3, 0xc, 0x7f, 0xa8, 0x38, 0x84, 0xe8, 0xde);
            private static Guid IID_CLRMetaHost = new Guid(0xD332DB9E, 0xB9B3, 0x4125, 0x82, 0x07, 0xA1, 0x48, 0x84, 0xF5, 0x32, 0x16);
            private static Guid IID_CLRRuntimeInfo = new Guid(0xBD39D1D2, 0xBA2F, 0x486a, 0x89, 0xB0, 0xB4, 0xB0, 0xCB, 0x46, 0x68, 0x91);
            private static Guid CLSID_CorRuntimeHost = new Guid(0xcb2f6723, 0xab3a, 0x11d2, 0x9c, 0x40, 0x00, 0xc0, 0x4f, 0xa3, 0x0a, 0x3e);
            private static Guid IID_CorRuntimeHost = new Guid(0xcb2f6722, 0xab3a, 0x11d2, 0x9c, 0x40, 0x00, 0xc0, 0x4f, 0xa3, 0x0a, 0x3e);

            [DllImport("mscoree.dll")]
            private static extern int CLRCreateInstance(ref Guid clsid, ref Guid iid,
                [MarshalAs(UnmanagedType.Interface)] out object ptr);

            [ComImport, Guid("D332DB9E-B9B3-4125-8207-A14884F53216"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
            private interface ICLRMetaHost
            {
                [return: MarshalAs(UnmanagedType.Interface)]
                object GetRuntime(string version, ref Guid iid);
                // Rest omitted
            }

            [ComImport, Guid("BD39D1D2-BA2F-486a-89B0-B4B0CB466891"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
            private interface ICLRRuntimeInfo
            {
                void GetVersionString(char[] buffer, int bufferLength);
                void GetRuntimeDirectory(char[] buffer, int bufferLength);
                bool IsLoaded(IntPtr hProcess);
                void LoadErrorString(uint id, char[] buffer, int bufferLength, int lcid);
                void LoadLibrary(string path, out IntPtr hMdodule);
                void GetProcAddress(string name, out IntPtr addr);
                [return: MarshalAs(UnmanagedType.Interface)]
                object GetInterface(ref Guid clsid, ref Guid iid);
                bool IsLoadable();
                void SetDefaultStartupFlags(uint flags, string configFile);
                void GetDefaultStartupFlags(out uint flags, char[] configFile, int configFileLength);
                void BindAsLegacyV2Runtime();
                void IsStarted(out bool started, out uint flags);
            }

            [ComImport, Guid("CB2F6722-AB3A-11d2-9C40-00C04FA30A3E"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
            private interface ICorRuntimeHost
            {
                void CreateLogicalThreadState();
                void DeleteLogicalThreadState();
                void SwitchinLogicalThreadState(IntPtr cookie);
                void SwitchoutLogicalThreadState(out IntPtr cookie);
                void LocksHeldByLogicalThread(out int count);
                void MapFile(IntPtr hFile, out IntPtr address);
                void GetConfiguration(out IntPtr config);
                void Start();
                void Stop();
                void CreateDomain(string name, object identity, out _AppDomain domain);
                void GetDefaultDomain(out _AppDomain domain);
                void EnumDomains(out IntPtr hEnum);
                void NextDomain(IntPtr hEnum, out _AppDomain domain);
                void CloseEnum(IntPtr hEnum);
                // rest omitted
            }
        }
    }
}