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DataWriter class

Writes data to an output stream.

Syntax

Public NotInheritable Class DataWriter  
    Inherits Object
    Implements IDataWriter
    Implements IDisposable

Attributes

ActivatableAttribute(Windows.Storage.Streams.IDataWriterFactory, NTDDI_WIN8)
ActivatableAttribute(NTDDI_WIN8)
MarshalingBehaviorAttribute(Agile)
ThreadingAttribute(Both)
VersionAttribute(NTDDI_WIN8)

Members

The DataWriter class has these types of members:

Constructors
Methods
Properties

Constructors

The DataWriter class has these constructors.

Constructor	Description
DataWriter()	Creates and initializes a new instance of the data writer.
DataWriter(IOutputStream)	Creates and initializes a new instance of the data writer to an output stream.

Methods

The DataWriter class has these methods. With C#, Visual Basic, and C++, it also inherits methods from the Object class.

Method	Description
Close [C++, JavaScript]	Closes the current stream and releases system resources.
DetachBuffer	Detaches the buffer that is associated with the data writer.
DetachStream	Detaches the stream that is associated with the data writer.
Dispose [C#, VB]	Performs tasks associated with freeing, releasing, or resetting unmanaged resources.
FlushAsync	Flushes data asynchronously.
MeasureString	Gets the size of a string.
StoreAsync	Commits data in the buffer to a backing store.
WriteBoolean	Writes a Boolean value to the output stream.
WriteBuffer(IBuffer)	Writes the contents of the specified buffer to the output stream.
WriteBuffer(IBuffer, UInt32, UInt32)	Writes the specified bytes from a buffer to the output stream.
WriteByte	Writes a byte value to the output stream.
WriteBytes	Writes an array of byte values to the output stream.
WriteDateTime	Writes a date and time value to the output stream.
WriteDouble	Writes a floating-point value to the output stream.
WriteGuid	Writes a GUID value to the output stream.
WriteInt16	Writes a 16-bit integer value to the output stream.
WriteInt32	Writes a 32-bit integer value to the output stream.
WriteInt64	Writes a 64-bit integer value to the output stream.
WriteSingle	Writes a floating-point value to the output stream.
WriteString	Writes a string value to the output stream.
WriteTimeSpan	Writes a time-interval value to the output stream.
WriteUInt16	Writes a 16-bit unsigned integer value to the output stream.
WriteUInt32	Writes a 32-bit unsigned integer value to the output stream.
WriteUInt64	Writes a 64-bit unsigned integer value to the output stream.

Properties

The DataWriter class has these properties.

Property	Access type	Description
ByteOrder	Read/write	Gets or sets the byte order of the data in the output stream.
UnicodeEncoding	Read/write	Gets or sets the Unicode character encoding for the output stream.
UnstoredBufferLength	Read-only	Gets the size of the buffer that has not been used.

Examples

The following example shows how to write and read strings to an in-memory stream. For the full code sample, see Reading and writing data sample.

JavaScript

C++

No code example is currently available or this language may not be supported.

Requirements

Minimum supported client	Windows 8 [Windows Store apps only]
Minimum supported server	Windows Server 2012 [Windows Store apps only]
Minimum supported phone	Windows Phone 8
Namespace	Windows.Storage.Streams Windows::Storage::Streams [C++]
Metadata	Windows.winmd