Content


        File Object
 FileObject.OpenAsTextStream Method
  
        Syntax:
  
        Parameters:
  
        Remarks:
  
        Examples:
 
        FileObject.ParentFolder Property
  
        Syntax:
  
        Parameters:
  
        Remarks:
  
        Examples:

File Object

One key function of FileSystemObject Component is the manipulation of files of the file system.

FileObject.OpenAsTextStream Method

FileObject.OpenAsTextStream method is the method to return a TextStream object for text manipulation, that is read from, write to, or append to the file, related to the specified File Object.

Syntax:

FileObjectName.OpenAsTextStream([ iomode, [ format]])

Or in VBScript. Imply

Set textobjectname = FileObjectName.OpenAsTextStream([ iomode, [ format]])

Or in JScript. Imply

textobjectname = FileObjectName.OpenAsTextStream([ iomode, [ format]])

Parameters:

textobjectname

The parameter "textobjectname" is the name assigned to the instance of the TextStream object returned by the method using the FileObjectName.OpenAsTextStream Method related to the specified File object.

FileSystemObjectName

The parameter "FileObjectName" is used to specify the name of the instance of the File Object related to.

iomode

The optional parameter "iomode" is used to specify the i/o operation mode of the OpenAsTextStream Method for the specified file object. The value of parameter "iomode" can be.

Constant	Value	Description
ForReading	1	The file is opened for reading only. No text can be written to the file.
ForWriting	2	The file is opened for writing. All previous contents in the file are overwritten if file with the same name exists.
ForAppending	8	The file is opened for writing to the end of the file. Text is appended to the text file only

format

The optional parameter "create" is a Tristate value used to specify the format of the opened file. The file is opened as ASCII if the optional parameter is omitted. The three Tristate values are

Constant	Value	Description
TristateUseDefault	-2	The file is opened as the file using the system default.
TristateTrue	-1	The file is opened as Unicode.
TristateFalse	0	The file is opened as ASCII.

Remarks:

FileSystemObjectName should always refer to a FileSystemObject Object.

Besides, the DeleteFile method stops on the first error it encounters. No attempt is made to roll back or undo any changes were made before an error occurs.

Examples:

Example of using the OpenAsTextStream method to read the specified files

ASP VBScript command:

<script runat="server" language="VBScript">
Dim fso, fileobjectname , textobjectname
Set fso = CreateObject("Scripting.FileSystemObject")
Set fileobjectname = fso.GetFile("d:\temp1\test.txt")
Set textobjectname = fileobjectname.OpenAsTextStream()
Response.Write textobjectname.Readline
textobjectname.Close
</script>

HTML web page ouput:

Hel
Example of using the OpenAsTextStream method to read the specified files

ASP JScript command::

<script runat="server" language=var fso, fileobjectname, textobjectname ;
fso = new ActiveXObject("Scripting.FileSystemObject");
fileobjectname = fso.GetFile("d:\\temp1\\test.txt")
textobjectname = fileobjectname.OpenAsTextStream()
Response.Write(textobjectname.Readline()); e(textobjectname.Readline());
</script>

HTML web page ouput:

Hel

FileObject.ParentFolder Property

FileObject.ParentFolder property for file object is a read-only property to return a folder object corresponding to the parent folder of the specified File Object.

Syntax:

FileObjectName.PartentFolder

Or in VBScript. Imply

Set parentfoldername=FileObjectName.PartentFolder

Or in JScript. Imply

parentfoldername=FileObjectName.PartentFolder

Parameters:

parentfoldername

The parameter "parentfoldername" is the name assigned to the instance of the Folder object returned by the property using the FileObjectName.ParentFolder property related to the specified File object.

FileObjectName

The parameter "FileObjectName" is used to specify the name of the instance of the File Object related to. Folder object is another possible alternate object of File Object for the ParentFolder property.

Remarks:

FileObjectName refers to a File Object. And Folder object is another possible alternate object of File Object for the ParentFolder Property.

Examples:

Example of using the ParentFolder property to create an instance of folder object of the parent of the specificed file object.

ASP VBScript command:

<script runat="server" language="VBScript">
Dim fso, FileObjectName, parentfoldername
Set fso = CreateObject("Scripting.FileSystemObject")
Set FileObjectName = fso.GetFile("d:\temp1\test.txt")
Set parentfoldername = FileObjectName.ParentFolder
Response.Write parentfoldername.Name
</script>

HTML web page ouput:

temp1
Example of using the ParentFolder property to create an instance of folder object of the parent of the specificed file object.

ASP JScript command:

<script runat="server" language="JScript">
var fso, FileObjectName, parentfoldername;
fso = new ActiveXObject("Scripting.FileSystemObject");
FileObjectName = fso.GetFile("d:\\temp1\\test.txt")
parentfoldername = FileObjectName.ParentFolder;
Response.Write(parentfoldername.Name + "<br />");
</script>

HTML web page ouput:

temp1

©sideway

ID: 130500012 Last Updated: 5/13/2013 Revision: 0 Ref:

References

Active Server Pages, , http://msdn.microsoft.com/en-us/library/aa286483.aspx
ASP Overview, , http://msdn.microsoft.com/en-us/library/ms524929%28v=vs.90%29.aspx
ASP Best Practices, , http://technet.microsoft.com/en-us/library/cc939157.aspx
ASP Built-in Objects, , http://msdn.microsoft.com/en-us/library/ie/ms524716(v=vs.90).aspx
Response Object, , http://msdn.microsoft.com/en-us/library/ms525405(v=vs.90).aspx
Request Object, , http://msdn.microsoft.com/en-us/library/ms524948(v=vs.90).aspx
Server Object (IIS), , http://msdn.microsoft.com/en-us/library/ms525541(v=vs.90).aspx
Application Object (IIS), , http://msdn.microsoft.com/en-us/library/ms525360(v=vs.90).aspx
Session Object (IIS), , http://msdn.microsoft.com/en-us/library/ms524319(8v=vs.90).aspx
ASPError Object, , http://msdn.microsoft.com/en-us/library/ms524942(v=vs.90).aspx
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