Assembly: mscorlib (in mscorlib.dll)
public override IAsyncResult BeginRead ( byte buffer, int offset, int numBytes, AsyncCallback userCallback, Object stateObject )
public IAsyncResult BeginRead ( byte buffer, int offset, int numBytes, AsyncCallback userCallback, Object stateObject )
public override function BeginRead ( buffer : byte, offset : int, numBytes : int, userCallback : AsyncCallback, stateObject : Object ) : IAsyncResult
The buffer to read data into.
The byte offset in buffer at which to begin reading.
The maximum number of bytes to read.
The method to call when the asynchronous read operation is completed. This parameter is optional.
The status of the asynchronous read.
Return ValueAn IAsyncResult object that represents the asynchronous read, which is possibly still pending. This IAsyncResult must be passed to this stream's EndRead method to determine how many bytes were read. This can be done either by the same code that called BeginRead or in a callback passed to BeginRead.
An asynchronous read was attempted past the end of the file.
The current position in the stream is updated when you issue the asynchronous read or write, not when the I/O operation completes.
You must call EndRead with this IAsyncResult to find out how many bytes were read.
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter EditionThe Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.