SalFileHandle

PPJ.Runtime.SalFileHandle

Namespace: PPJ.Runtime

Assembly: PPJ.Web.49 (4.9.0.0)

C#

public struct SalFileHandle : ValueType, ISerializable, IXmlSerializable

VB.NET

Public Structure SalFileHandle
    Implements ValueType, ISerializable, IXmlSerializable

Properties

Handle

IntPtr: Returns the handle for this SalFileHandle object

IsBinary

Boolean: Returns true if the file was opened in binary mode.

IsNull

Boolean: Checks if this SalFileHandle object contains a null value.

LastError

Int32: Returns the last error code.

Stream

Stream: Returns the wrapped FileStream object.

Methods

Close()

Closes a file.

Returns: Boolean. bOk

Copy(sSourcePath, sDestPath, bOverWrite)

Copies the contents of one file (source) to another file (destination).

Parameter	Type	Description
sSourcePath	SalString	The full path name of the source file.
sDestPath	SalString	The full path name of the destination file.
bOverWrite	SalBoolean	Specifies whether (TRUE) or not (FALSE) to overwrite the destination file. If the destination file already exists and bOverWrite is FALSE, then SalFileCopy fails, and returns FILE_CopyExist. If the destination file already exists and bOverWrite is TRUE, then SalFileCopy succeeds and the destination file is overwritten.

Returns: SalNumber. nStatus

CreateDirectory(sDir)

Creates a directory.

Parameter	Type	Description
sDir	SalString	The full path name of the new directory.

Returns: SalBoolean. bOk

FromHandle(handle)

Returns the SalFileHandle object from the handle

Parameter	Type	Description
handle	IntPtr

Returns: SalFileHandle.

GetChar()

Returns the next character in an open file.

Returns: SalNumber. nChar

GetChar(nChar)

Parameter	Type	Description
nChar	SalNumber&

Returns: Boolean.

GetCurrentDirectory(sPath)

Parameter	Type	Description
sPath	SalString&

Returns: SalBoolean.

GetDateTime(sFilename, dtDateTime)

Parameter	Type	Description
sFilename	SalString
dtDateTime	SalDateTime&

Returns: SalBoolean.

GetDrive()

Gets the letter of the default (current) disk drive.

Returns: SalString. sDriveLetter

GetObjectData(info, context)

Parameter	Type	Description
info	SerializationInfo
context	StreamingContext

GetString(maxLength)

Returns the next line from an open file. Lines are terminated by \r\n or \r or

Parameter	Type	Description
maxLength	Int32

Returns: SalString.

GetString(line, maxLength)

Parameter	Type	Description
line	SalString&
maxLength	Int32

Returns: Boolean.

Open(fileName, flags)

Opens, re-opens, creates, or deletes a file.

Parameter	Type	Description
fileName	String	The name of the file to open, create, delete, or test.
flags	Int32	A constant that specifies the style in which to open the file. nStyle can be one or more styles combined using the bitwise OR (|) operator.

Returns: Boolean. bOk

Open(fileName, flags, encoding)

Opens, re-opens, creates, or deletes a file.

Parameter	Type	Description
fileName	String	The name of the file to open, create, delete, or test.
flags	Int32	A constant that specifies the style in which to open the file. nStyle can be one or more styles combined using the bitwise OR (|) operator.
encoding	Encoding	Encoder used to read/write characters.

Returns: Boolean. bOk

PutChar(c)

Writes a character to an open file.

Parameter	Type	Description
c	Int32	The ANSI numeric value of the character to write to hFile.

Returns: Boolean. bOk

PutString(text)

Writes a string to an open file.

Parameter	Type	Description
text	String	The string to write.

Returns: Boolean. bOk

Read(maxLength)

Reads a buffer of characters from an open file to a string .

Parameter	Type	Description
maxLength	Int32

Returns: SalString.

Read(buffer, maxLength)

Parameter	Type	Description
buffer	SalString&
maxLength	Int32

Returns: SalNumber.

Read(buffer, maxLength)

Parameter	Type	Description
buffer	SalBinary&
maxLength	Int32

Returns: SalNumber.

RemoveDirectory(sDir)

Deletes a directory.

Parameter	Type	Description
sDir	SalString	The full path name of the directory to delete.

Returns: SalBoolean. bOk

Seek(bytes, position)

Positions the file pointer in an open file. The next file operation (such as a read or write) takes place at this new location.

Parameter	Type	Description
bytes	Int32	The specific position of the file pointer; the number of bytes from nPosition where the next file operation will take place.
position	Int32	The general position of the file pointer; one of the following values: FILE_SeekBegin FILE_SeekCurrent FILE_SeekEnd

Returns: Boolean. bOk

SetCurrentDirectory(sPath)

Changes the current working directory. If the specified path does not contain a drive letter, the default drive's current directory is changed. Otherwise, the specified drive's current directory is changed and the specified drive is made the current drive.

Parameter	Type	Description
sPath	SalString	The path name of the new current working directory.

Returns: SalBoolean. bOk

SetDateTime(sFilename, dtDateTime)

Sets the modification date and time of the specified file.

Parameter	Type	Description
sFilename	SalString	The name of the file whose modification date you want to set.
dtDateTime	SalDateTime	The modification date and time.

Returns: SalBoolean. bOk

SetDrive(sDriveLetter)

Sets the current disk drive to the specified drive letter.

Parameter	Type	Description
sDriveLetter	SalString	The new disk drive letter. The length of this parameter's value is one character.

Returns: SalBoolean. bOk

Tell()

Returns the current position in an open file.

Returns: SalNumber. nPos

Use(stream, flags)

Uses the specified stream .

Parameter	Type	Description
stream	Stream	The stream to read or write.
flags	Int32	A constant that specifies the style in which to used the stream. nStyle can be one or more styles combined using the bitwise OR (|) operator.

Returns: Boolean. bOk

Use(stream, flags, encoding)

Uses the specified stream .

Parameter	Type	Description
stream	Stream	The stream to read or write.
flags	Int32	A constant that specifies the style in which to used the stream. nStyle can be one or more styles combined using the bitwise OR (|) operator.
encoding	Encoding	Encoder used to read/write characters.

Returns: Boolean. bOk

Write(str, length)

Writes a string to an open file.

Parameter	Type	Description
str	SalString	The string to write to hFile.
length	Int32	The number of bytes to write.

Returns: SalNumber.

Write(binary, length)

Writes a binary buffer to an open file.

Parameter	Type	Description
binary	SalBinary	The string to write to hFile.
length	Int32	The number of bytes to write.

Returns: SalNumber.

Used By

Name	Description
Sal.WindowHandleToNumber	Converts a SalFileHandle to a number.
Sal.FileGetChar
Sal.FileGetStr
Sal.FilePutChar	Writes a character to an open file.
Sal.FilePutStr	Writes a string to an open file and appends a carriage return/line feed character to the string.
Sal.FileRead
Sal.FileSeek	Positions the file pointer in an open file.
Sal.FileTell	Returns the current position in an open file.
Sal.FileWrite	Writes a string to an open file.
SalFileHandle.FromHandle	Returns the SalFileHandle object from the handle
Vis.FileClose
Vis.FileRead
Vis.FileReadString
Vis.FileSeek
Vis.FileTell
Vis.FileWrite
Vis.FileWriteString
XSal.GZipPutChar