SmuggledIUnknown.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / Log / System / IO / Log / SmuggledIUnknown.cs / 1305376 / SmuggledIUnknown.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.IO.Log
{ 
    using System;
    using System.Runtime.CompilerServices; 
    using System.Runtime.InteropServices; 
    using System.Runtime.Remoting.Services;
 
    internal sealed class SmuggledIUnknown : SafeHandle
    {
        internal SmuggledIUnknown() : base(IntPtr.Zero, true)
        { 
        }
 
        internal SmuggledIUnknown(object unknown) : this() 
        {
            RuntimeHelpers.PrepareConstrainedRegions(); 
            try
            {
            }
            finally 
            {
                base.handle = Marshal.GetIUnknownForObject(unknown); 
            } 
        }
 
        public override bool IsInvalid
        {
            get
            { 
                return (IsClosed || (IntPtr.Zero == base.handle));
            } 
        } 

        public object Smuggle() 
        {
            object comObject;
            RuntimeHelpers.PrepareConstrainedRegions();
            try 
            {
            } 
            finally 
            {
                comObject = EnterpriseServicesHelper.WrapIUnknownWithComObject(base.handle); 
                GC.KeepAlive(this);
            }
            return comObject;
        } 

        override protected bool ReleaseHandle() 
        { 
            if (base.handle != IntPtr.Zero)
            { 
                Marshal.Release(base.handle);
                base.handle = IntPtr.Zero;
            }
 
            return true;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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