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Length Property

Stream.Length Property

When overridden in a derived class, gets the length in bytes of the stream.

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

public abstract long Length { get; }

Property Value

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

ExceptionCondition
NotSupportedException

A class derived from Stream does not support seeking.

ObjectDisposedException

Methods were called after the stream was closed.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
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