SafeEventLogWriteHandle.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 / SMDiagnostics / System / ServiceModel / Diagnostics / SafeEventLogWriteHandle.cs / 1305376 / SafeEventLogWriteHandle.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.ServiceModel.Diagnostics 
{
    using Microsoft.Win32.SafeHandles; 
    using System.Runtime.InteropServices; 
    using System.Runtime.Versioning;
    using System.Globalization; 
    using System.Diagnostics;
    using System.Security;
    using System.Runtime;
 
    [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")]
    [SecurityCritical] 
    sealed class SafeEventLogWriteHandle : SafeHandleZeroOrMinusOneIsInvalid 
    {
        // Note: RegisterEventSource returns 0 on failure 
        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")]
        [SecurityCritical]
        SafeEventLogWriteHandle() : base(true) { }
 
        [ResourceConsumption(ResourceScope.Machine)]
        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")] 
        [SecurityCritical] 
        internal static SafeEventLogWriteHandle RegisterEventSource(string uncServerName, string sourceName)
        { 
            SafeEventLogWriteHandle retval = NativeMethods.RegisterEventSource(uncServerName, sourceName);
            int error = Marshal.GetLastWin32Error();
            if (retval.IsInvalid)
            { 
                Debug.Print("SafeEventLogWriteHandle::RegisterEventSource[" + uncServerName + ", " + sourceName + "] Failed. Last Error: " +
                    error.ToString(CultureInfo.InvariantCulture)); 
            } 
            return retval;
        } 

        [DllImport("advapi32", SetLastError = true)]
        [ResourceExposure(ResourceScope.None)]
        private static extern bool DeregisterEventSource(IntPtr hEventLog); 

#pragma warning disable 56523 
        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")] 
        [SecurityCritical]
        override protected bool ReleaseHandle() 
        {
            return DeregisterEventSource(this.handle);
        }
#pragma warning restore 56523 

    } 
} 

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

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