When overridden in a derived class, clears all buffers for this stream and causes any buffered data to be written to the underlying device.
Assembly: mscorlib (in mscorlib.dll)
Public MustOverride Sub Flush
public abstract void Flush()
public: virtual void Flush() abstract
abstract Flush : unit -> unit
| Exception | Condition |
|---|---|
| IOException |
An I/O error occurs. |
Override Flush on streams that implement a buffer. Use this method to move any information from an underlying buffer to its destination, clear the buffer, or both. Depending upon the state of the object, you might have to modify the current position within the stream (for example, if the underlying stream supports seeking). For additional information see CanSeek.
When using the StreamWriter or BinaryWriter class, do not flush the base Stream object. Instead, use the class's Flush or Close method, which makes sure that the data is flushed to the underlying stream first and then written to the file.
.NET Framework
Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0.NET Framework Client Profile
Supported in: 4, 3.5 SP1Portable Class Library
Supported in: Portable Class LibraryWindows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.