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UnmanagedMemoryStream Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.

Provides access to unmanaged blocks of memory from managed code.

Inheritance Hierarchy

System.Object
  System.IO.Stream
    System.IO.UnmanagedMemoryStream

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

Syntax

'Declaration
Public Class UnmanagedMemoryStream _
    Inherits Stream
public class UnmanagedMemoryStream : Stream

The UnmanagedMemoryStream type exposes the following members.

Properties

  Name Description
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 CanRead Infrastructure. Gets a value indicating whether a stream supports reading. (Overrides Stream.CanRead.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 CanSeek Infrastructure. Gets a value indicating whether a stream supports seeking. (Overrides Stream.CanSeek.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 CanTimeout Gets a value that determines whether the current stream can time out. (Inherited from Stream.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 CanWrite Infrastructure. Gets a value indicating whether a stream supports writing. (Overrides Stream.CanWrite.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Capacity Infrastructure. Gets the stream length (size) or the total amount of memory assigned to a stream (capacity).
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Length Infrastructure. Gets the length of the data in a stream. (Overrides Stream.Length.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 Position Infrastructure. Gets or sets the current position in a stream. (Overrides Stream.Position.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 PositionPointer Infrastructure. Gets or sets a byte pointer to a stream based on the current position in the stream.
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 ReadTimeout Gets or sets a value, in miliseconds, that determines how long the stream will attempt to read before timing out. (Inherited from Stream.)
Public propertySupported by Silverlight for Windows PhoneSupported by Xbox 360 WriteTimeout Gets or sets a value, in miliseconds, that determines how long the stream will attempt to write before timing out. (Inherited from Stream.)

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Methods

  Name Description
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 BeginRead Begins an asynchronous read operation. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 BeginWrite Begins an asynchronous write operation. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Close Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows Phone CopyTo(Stream) Reads all the bytes from the current stream and writes them to the destination stream. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows Phone CopyTo(Stream, Int32) Reads all the bytes from the current stream and writes them to a destination stream, using a specified buffer size. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Dispose() Releases all resources used by the Stream. (Inherited from Stream.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Dispose(Boolean) Infrastructure. Releases the unmanaged resources used by the UnmanagedMemoryStream and optionally releases the managed resources. (Overrides Stream.Dispose(Boolean).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 EndRead Waits for the pending asynchronous read to complete. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 EndWrite Ends an asynchronous write operation. (Inherited from Stream.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Flush Infrastructure. Overrides the Flush method so that no action is performed. (Overrides Stream.Flush().)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 GetType Gets the Type of the current instance. (Inherited from Object.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Read Infrastructure. Reads the specified number of bytes into the specified array. (Overrides Stream.Read(array<Byte[], Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ReadByte Infrastructure. Reads a byte from a stream and advances the position within the stream by one byte, or returns -1 if at the end of the stream. (Overrides Stream.ReadByte().)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Seek Infrastructure. Sets the current position of the current stream to the given value. (Overrides Stream.Seek(Int64, SeekOrigin).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 SetLength Infrastructure. Sets the length of a stream to a specified value. (Overrides Stream.SetLength(Int64).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 ToString Returns a string that represents the current object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 Write Infrastructure. Writes a block of bytes to the current stream using data from a buffer. (Overrides Stream.Write(array<Byte[], Int32, Int32).)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360 WriteByte Infrastructure. Writes a byte to the current position in the file stream. (Overrides Stream.WriteByte(Byte).)

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Remarks

This class supports access to unmanaged memory using the existing stream-based model and does not require that the contents in the unmanaged memory be copied to the heap.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference