SafeFileHandle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / Microsoft / Win32 / SafeHandles / SafeFileHandle.cs / 1 / SafeFileHandle.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SafeFileHandle 
**
** 
** A wrapper for file handles
**
**
===========================================================*/ 

using System; 
using System.Security; 
using System.Security.Permissions;
using System.Runtime.InteropServices; 
using System.Runtime.CompilerServices;
using System.Runtime.ConstrainedExecution;
using System.Runtime.Versioning;
using Microsoft.Win32; 

namespace Microsoft.Win32.SafeHandles { 
 
    [SecurityPermission(SecurityAction.LinkDemand,UnmanagedCode=true)]
    public sealed class SafeFileHandle: SafeHandleZeroOrMinusOneIsInvalid { 

        private SafeFileHandle() : base(true)
        {
        } 

        public SafeFileHandle(IntPtr preexistingHandle, bool ownsHandle) : base(ownsHandle) { 
            SetHandle(preexistingHandle); 
        }
 
        [ResourceExposure(ResourceScope.Machine)]
        [ResourceConsumption(ResourceScope.Machine)]
        override protected bool ReleaseHandle()
        { 
            return Win32Native.CloseHandle(handle);
        } 
    } 
}

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