API -> WriteFile [ Library : kernel32.dll, Category : File Management ] [C#, VB, VB.net]

WriteFile

Library : kernel32.dll Category : File Management

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API Description :

The WriteFile function writes data to a file and is designed for both synchronous and asynchronous operation. The function starts writing data to the file at the position indicated by the file pointer.

VB Declaration :

Show Multiline Public Private

Declare Function WriteFile Lib "kernel32" (ByVaL hFile As Long, lpBuffer As Any, ByVaL nNumberOfBytesToWrite As Long, lpNumberOfBytesWritten As Long, lpOverlapped As OVERLAPPED) As Long

Parameters :

· hFile
Identifies the file to be written to. The file handle must have been created with GENERIC_WRITE access to the file.
Windows NT
For asynchronous write operations, hFile can be any handle opened with the FILE_FLAG_OVERLAPPED flag by the CreateFil

Return :

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

OS Requirement :

Requires Windows NT 3.1 or later
Requires Windows 95 or later

Dotnet Replacement :

Any of the following: System.IO.FileStream.BeginWrite and EndWrite System.IO.FileStream.Write System.IO.FileStream.WriteByte System.IO.BinaryWriter.Write