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FileStream.Position Property

Gets or sets the current position of this stream.

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

public override long Position { get; set; }
/** @property */
public long get_Position ()

/** @property */
public void set_Position (long value)

public override function get Position () : long

public override function set Position (value : long)

Not applicable.

Property Value

The current position of this stream.

Exception typeCondition

NotSupportedException

The stream does not support seeking.

IOException

An I/O error occurs.

- or -

The position was set to a very large value beyond the end of the stream in Windows 98 or earlier.

ArgumentOutOfRangeException

Attempted to set the position to a negative value.

EndOfStreamException

Attempted seeking past the end of a stream that does not support this.

Seeking to any location beyond the length of the stream is supported. When you seek beyond the length of the file, the file size grows. In Microsoft Windows NT and newer, any data added to the end of the file is set to zero. In Microsoft Windows 98 or earlier, any data added to the end of the file is not set to zero, which means that previously deleted data is visible to the stream. Setting the position of the stream to a large value beyond the end of the stream in Windows 98 or earlier may result in an exception being raised.

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

The following example uses the Length and Position properties to check for an end-of-file condition.

if( s.Length==s.Position )
{
   Console.WriteLine("End of file has been reached.");
}

if (s.get_Length() == s.get_Position()) {
    Console.WriteLine("End of file has been reached.");
}

if( s.Length==s.Position )
    Console.WriteLine("End of file has been reached.");

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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