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Stream.Seek Method

When overridden in a derived class, sets the position within the current stream.

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

public abstract long Seek(
	long offset,
	SeekOrigin origin
)

Parameters

offset
Type: System.Int64

A byte offset relative to the origin parameter.

origin
Type: System.IO.SeekOrigin

A value of type SeekOrigin indicating the reference point used to obtain the new position.

Return Value

Type: System.Int64
The new position within the current stream.

ExceptionCondition
IOException

An I/O error occurs.

NotSupportedException

The stream does not support seeking, such as if the stream is constructed from a pipe or console output.

ObjectDisposedException

Methods were called after the stream was closed.

Use the CanSeek property to determine whether the current instance supports seeking.

If offset is negative, the new position is required to precede the position specified by origin by the number of bytes specified by offset. If offset is zero (0), the new position is required to be the position specified by origin. If offset is positive, the new position is required to follow the position specified by origin by the number of bytes specified by offset.

Classes derived from Stream that support seeking must override this method to provide the functionality described above.

Seeking to any location beyond the length of the stream is supported.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

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

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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