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MemoryStream.Seek Method

Sets the position within the current stream to the specified value.

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

Public Overrides Function Seek ( _
	offset As Long, _
	loc As SeekOrigin _
) As Long
Dim instance As MemoryStream
Dim offset As Long
Dim loc As SeekOrigin
Dim returnValue As Long

returnValue = instance.Seek(offset, loc)
public long Seek (
	long offset, 
	SeekOrigin loc
public override function Seek (
	offset : long, 
	loc : SeekOrigin
) : long
Not applicable.



The new position within the stream. This is relative to the loc parameter, and can be positive or negative.


A value of type SeekOrigin, which acts as the seek reference point.

Return Value

The new position within the stream, calculated by combining the initial reference point and the offset.

Exception typeCondition


Seeking is attempted before the beginning of the stream.


offset is greater than MaxValue.


There is an invalid SeekOrigin.


The current stream instance is closed.

For an example of creating a file and writing text to a file, see Writing Text to a File. For an example of reading text from a file, see Reading Text from a File. For an example of reading from and writing to a binary file, see Reading and Writing to a Newly Created Data File.

This method overrides Seek.

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

This code example is part of a larger example provided for the MemoryStream class.

' Set the stream position to the beginning of the stream.
memStream.Seek(0, SeekOrigin.Begin)

// Set the position to the beginning of the stream.
memStream.Seek(0, SeekOrigin.Begin);

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