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FileStream.Unlock Method

Allows access by other processes to all or part of a file that was previously locked.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)

public virtual void Unlock(
	long position,
	long length
)

Parameters

position
Type: System.Int64

The beginning of the range to unlock.

length
Type: System.Int64

The range to be unlocked.

ExceptionCondition
ArgumentOutOfRangeException

position or length is negative.

For a list of common I/O tasks, see Common I/O Tasks.

This code example is part of a larger example provided for the Lock method.

// Unlock the specified part of the file. 
case 'U':
    try
    {
        fileStream.Unlock(
            textLength - 1, byteCount);
        Console.WriteLine("The specified part " +
            "of file has been unlocked.");
    }
    catch(IOException e)
    {
        Console.WriteLine(
            "{0}: The specified part of file is " +
            "not locked by the current process.", 
            e.GetType().Name);
    }
    break;

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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