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FileStream.Length Property

Gets the length in bytes of the stream.

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

public override long Length { get; }

Property Value

Type: System.Int64
A long value representing the length of the stream in bytes.

ExceptionCondition
NotSupportedException

CanSeek for this stream is false.

IOException

An I/O error, such as the file being closed, occurred.

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.");
}


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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