Using the FSO (File System Object) in VB6. The File. System Object (FSO) object model provides an object- based tool for working with. Using "object. method" syntax, it exposes a. The FSO also provides methods for reading and writing sequential text. NOT have methods for processing binary or random files. The FSO is. (or should be) used primarily with VBScript. VBScript is a scripting language. ASP for web development; VBScript is also used for Windows scripting. Windows scripting files, which have a ". MS- DOS "BAT" files. VBScript is a pared- down version of Visual Basic.
. how to copy a file in vb6 That sounds much better. Microsoft MVP. * Accessing Cloud Data using an OData Web Service Learn to build a web service and an application that consumes your data that is stored in the. VB proper". One of the things missing in VBScript is the set of native VB file processing. VBScript. the FSO must be used to manipulate files and folders. However, VB proper. FSO in addition to its native file processing commands. There are. some trade- offs in using the FSO with Visual Basic. On the one hand, the FSO. VB statements. On the other hand, using the FSO requires adding. To use the. FSO with your VB project, you must add a reference to "Microsoft Scripting. Runtime" (which is the system file "SCRRUN. DLL"). To do this. VB6 Filecopy and FSO.copyfile Hi. If I run the program using 'Run as an administrator' then it works fine. it doesn't copy the file under.\virtual store\windows\ directory either. VB IDE, first go to the Project menu, and select References. From the. References dialog box, check Microsoft Scripting Runtime, as shown. OK. Once you. have done the above, you can use the FSO in your VB project. In your code, you. FSO and instantiate it. The most. concise way of doing this is use the "New" keyword in your. Note: The "Scripting." qualifier is. Dim. obj. FSO As New Scripting. File. System. Object. An. alternative way of doing this is to declare the FSO variable without the. New" keyword and instantiate it later with the "Set". Note: Again, the "Scripting." qualifier. Dim. obj. FSO As Scripting. File. System. Object .. Using the FSO (File System Object) in VB6. Level: The File System Object (FSO). close the file using the.Set. obj. FSO = New Scripting. File. System. Object. You can. also use "late binding" by declaring the FSO variable as a generic. Create. Object" method to. This is the slowest method, but it is the. VBScript. The "Scripting." qualifier is. Dim. obj. FSO As Object .. Set. obj. FSO = Create. Object("Scripting. File. System. Object")The tables. FSO. FSO. Objects. Object. Description. File. System. Object. FSO object model. Allows the programmer to. Files, Folders and Drives. The programmer. can use the FSO objects to create directories, move files, determine whether. Drive exists, etc. Drive. The Drive. CD- ROM, RAM disk, and network. Drives collection provides a list of physical and logical. File object. The File. Files collection. Folder object. The Folder. Folders. collection provides a list of subfolders in a folder. Text. Stream object. Used to. read and write text files. Property. of the File. System. Object. Property. Description. Drives. Returns a. Drives collection, which is a list of physical and logical drives on. Methods of the File. System. Object. Method. Description. Build. Path. Appends. file path information to an existing file path. Copy. File. Copies. Copy. Folder. Copies. Create. Folder. Creates a. Create. Text. File. Creates a. text file and returns a Text. Stream object. Delete. File. Deletes a. file. Delete. Folder. Deletes a. Drive. Exists. Determines. File. Exists. Determines. Folder. Exists. Determines. Get. Absolute. Path. Name. Returns. the full path to a file or folder. Get. Base. Name. Returns. Get. Drive. Returns a. Get. Drive. Name. Returns a. drive name. Get. Extension. Name. Returns a. file extension from a path. Get. File. Returns a. Get. File. Name. Returns a. Get. Folder. Returns a. Get. Parent. Folder. Name. Returns. the parent folder name from a path. Get. Special. Folder. Returns. an object pointer to a special folder. Get. Temp. Name. Returns a. Create. Text. File. Move. File. Moves. Move. Folder. Moves. Open. Text. File. Opens an. existing text file and returns a Text. Stream object. Properties. Object. Property. Description. Available. Space. The. amount of available Drive space in bytes. Drive. Letter. A string. Drive without a colon (e. C"). Drive. Type. An. integer value indicating the Drive type. Possible values are 0. Unknown), 1 (Removable), 2 (Fixed), 3 (Remote), 4 (CD- ROM) and 5 (RAM Disk). File. System. A string. Drive description ("FAT". FAT3. 2", "NTFS", etc.). Free. Space. Same as Available. Space. . Is. Ready. A Boolean. indicating whether or not a Drive is ready for use. Path. A string. containing the Drive's path (e. C: \") Root. Folder. A Folder. object containing the root folder of Drive. Serial. Number. A long. Drive serial number. Share. Name. With. Total. Size. The total. Drive size in bytes. Volume. Name. A string. Drive volume name. Properties of the Folder Object. Property. Description. Attributes. An. integer value indicating Folder's attributes. Possible values are 0 (Normal), 1 (Read. Only), 3 (Hidden), 4. System), 8 (Volume), 1. Directory), 3. 2 (Archive), 6. Alias), and 1. 28. Compressed). Date. Created. The date. Date. Last. Accessed. The date. the folder was last accessed. Date. Last. Modified. The date. the folder was last modified. Drive. The Drive. Is. Root. Folder. A Boolean. indicating whether or not a Folder is the root folder. Name. A string. containing the Folder's name. Parent. Folder. A string. Folder's parent folder name. Path. A string. containing the Folder's path. Short. Name. A string. Folder's name expressed as an MS- DOS compliant. Short. Path. A string. Folder's path expressed as a short (MS- DOS compliant). Size. The total. size in bytes of all subfolders and files. Type. A string. containing the Folder type (e. File Folder"). Methods of the Folder Object. Method. Description. Delete. Deletes. the Folder. Same as Delete. Folder of File. System. Object. Move. Moves the. Folder. Same as Move. Folder of File. System. Object. Copy. Copies. the Folder. Same as Copy. Folder of File. System. Object. Properties of the File Object. Property. Description. Attributes. An. integer value indicating File's attributes. Possible values are 0 (Normal), 1 (Read. Only), 3 (Hidden), 4. System), 8 (Volume), 1. Directory), 3. 2 (Archive), 6. Alias), and 1. 28. Compressed). Date. Created. The date. Date. Last. Accessed. The date. the file was last accessed. Date. Last. Modified. The date. the file was last modified. Drive. The Drive. Name. A string. containing the File's name. Parent. Folder. The Folder. Path. A string. containing the File's path. Short. Name. A string. File's name expressed as a short (MS- DOS compliant. Short. Path. A string. File's path expressed as a short (MS- DOS compliant). Size. The total. size in bytes of the file. Type. A string. containing the File type (e. Microsoft Word Document"). Methods of the File Object. Method. Description. Delete. Deletes. the File. Same as Delete. File of File. System. Object. Move. Moves the. File. Same as Move. File of File. System. Object. Copy. Copies. File. Same as Copy. File of File. System. Object. Create. Text. File. Returns a. Text. Stream object that can be used to work with the newly created. Open. As. Text. Stream. Opens an. existing text file and returns a Text. Stream object. Properties of the Text. Stream Object. Property. Description. At. End. Of. Line. A Boolean. At. End. Of. Stream. A Boolean. indicating whether or not the file pointer is at the end of file (used when. Column. The. column number of the current character position in a Text. Stream file. Line. The. current line number in a Text. Stream file. Methods of the Text. Stream Object. Property. Description. Close. Closes an. open Text. Stream file. Read. Reads a. specified number of characters from a Text. Stream file and returns the. Read. All. Reads an. Text. Stream file and returns the resulting string. Read. Line. Reads an. Text. Stream. file and returns the resulting string. Skip. Skips a. specified number of characters when reading a Text. Stream file. Skip. Line. Skips the. next line when reading a Text. Stream file. Write. Writes a. specified string to a Text. Stream file. Write. Line. Writes a. specified string and newline character to a Text. Stream file. Write. Blank. Lines. Writes a. Text. Stream file. Sample. Program 1. The first. sample program is equivalent of the sample program presented in the previous. File System Commands and Functions. The previous topic used the native. VB commands, this topic will use the FSO. For. convenience, the "task at hand" is repeated below: As a. MS- DOS commands has become the work to. Let us take. a look at the original student exercise. The students were given a floppy disk. The students. were instructed to make six directories on their disk and move the indicated. When done with this step, there. NO files in the root directory. Create. a directory called: For. SYSTEM. SYSCOMMAND. COMEXECUTE. EXEINITIAL. INITEXT. TXTWRITE. WRITo do this step they would have to. First, make the directories: MD SYSTEM MD COMMAND MD EXECUTE MD INITIAL MD TEXT MD WRITENext, they. This could be accomplished with either a set of MOVE commands or a. COPY and DELETE combinations: MOVE. A: \*. SYS A: \SYSTEM MOVE. A: \*. COM A: \COMMAND MOVE. A: \*. EXE A: \EXECUTE MOVE. A: \*. INI A: \INITIAL MOVE. A: \*. TXT A: \TEXT MOVE. A: \*. WRI A: \WRITE - or - COPY. A: \*. SYS A: \SYSTEMDEL A: \*. SYS COPY. A: \*. COM A: \COMMANDDEL A: \*. COM COPY. A: \*. EXE A: \EXECUTEDEL A: \*. EXE COPY. A: \*. INI A: \INITIALDEL A: \*. INI COPY. A: \*. TXT A: \TEXTDEL A: \*. TXT COPY. A: \*. WRI A: \WRITEDEL A: \*. WRIFor the. last step, they were instructed as follows: Below the SYSTEM. EXE_INI. Place copies of. EXE and . INI files there. Below the INITIAL subdirectory. TXT_WRI. Place copies of the . TXT. and . WRI files there. To do this, they would have to issue. MD. A: \SYSTEM\EXE_INI COPY. A: \EXECUTE\*. EXE A: \SYSTEM\EXE_INI COPY. A: \INITIAL\*. INI A: \SYSTEM\EXE_INI MD. A: \INITIAL\TXT_WRI COPY. A: \TEXT\*. TXT A: \INITIAL\TXT_WRI COPY. A: \WRITE\*. INI A: \ INITIAL\TXT_WRIThe student. As a. follow- up exercise, students were given the disks back and asked to restore the. To do this. they would have to move the *. SYS, *. COM, *. EXE, *. INI, *. TXT, and *. WRI files. from their respective top- level directories back to the root. VB6 File. System. Object makes it easier to work with files. In VB6, you often need to implement file search facilities in your applications. For instance, you might need to search for a particular log file on the client machine, get a listing of all files available in the particular directory, or verify that a particular directory or file exists. The simplest way to achieve this is to employ the File. System. Object component, which provides a useful set of features that can simplify coding. File. System. Object component. The File. System. Object gives you access to the file system. It allows creating, manipulating, deleting, and obtaining information about drives, folders, and files. To use File. System. Object in your VB code, you need to declare it in the following way: Dim fso As New File. System. Object. You can then use its properties and methods, which are shown in Table A. Table AObject/collection. Type. Description. File. System. Object. Main object. Allows creating, deleting, manipulating, and getting information about drives, folders, files. Drive. Object. Allows getting information about a drive. Drives. Collection. Lists drives available on the system (both physical and logical)File. Object. Allows creating, deleting, and moving files, as well as getting file properties. Files. Collection. Lists all files in a given folder. Folder. Object. Allows creating, moving, and deleting folders, as well as getting information about a particular folder. Folders. Collection. Provides a list of all folders in a Folder. Text. Stream. Object. Allows reading and writing text files. File. System. Object object model. Table B outlines the most often used methods of the File. System. Object. Table BMethod. Description. Example. Create. Folder. Creates a new folderfso. Create. Folder "C: \Files"Create. Text. File. Creates a specified filename and returns a Text. Stream object that can be used to read from or write to the filefso. Create. Text. File "C: \Files\file. Delete. Folder. Deletes folderfso. Delete. Folder "C: \Files"Delete. File. Deletes filefso. Delete. File "C: \Files. Copy. Folder. Copies a folder and its contents to another folderfso. Copy. Folder "C: \Files", "C: \Files_Copy"Copy. File. Copies a file to another locationfso. Copy. File "C: \Files\file. C: \Files\file_copy. Move. Folder. Moves a folder to another locationfso. Move. Folder "C: \Files", "C: \Files Move"Move. File. Moves a file to another locationfso. Move. File "C: \Files\file. C: \Files\file_move. Get. Drive. Returns a Drive object corresponding to the drive in a specified path. Allows getting various information about the drive, such as available space, drive letter, drive type, file system, free space, serial number, share name, total sizefso. Get. Drive("C") Available. Space. Drive. Exists. Checks whether a drive exists. If fso. Drive. Exists("D") Then. Msg. Box "Drive D found"End If. Get. Folder Returns a Folder object corresponding to the folder in a specified pathfso. Get. Folder(app. Path)Get. Parent. Folder. Name. Returns a string containing the name of the parent folder of the last component in a specified pathfso. Get. Parent. Folder. Name(app. Path)Get. Special. Folder. Returns the special folder specified. One of three options: Windows. Folder (contains files installed by the Windows operating system), System. Folder (contains fonts, libraries, device drivers), or Temporary. Folder (used to store temp files)fso. Get. Special. Folder(Temporary. Folder)Get. File. Returns a File object corresponding to the file in a specified path. Get. File "C: \Files\file. Folder. Exists. Checks whether a folder exists. If fso. Folder. Exists("C: \Files") Then. Msg. Box "Folder Exists!"End If. File. Exists Checks whether a file exists. If fso. File. Exists("C: \Files\file. Then. Msg. Box "File Exists!"End if. Common File. System. Object methods. Code example. Let’s take a look at the code that will allow you to go through files in a specified directory and list them in a Listbox control. We'll assume that you have a Listbox control on a form called lst. Filesand a C: \Files directory on your system that contains a number of files. Listing A shows the code to retrieve a list of those files. File. System. Object limitations. When you implement File. System. Object, you should keep in mind these limitations: · File. System. Object allows creating ASCII or Unicode text files.· File. System. Object can read only ASCII text files.· When reading files, File. System. Object can read in only one direction and only line by line.· A file can’t be open for reading and writing. You can open a file in For. Reading mode using Open. Text. File, but to make changes to the file, you would need to open a Text. Stream object.· When searching for files, you can’t use wildcards; you must specify the exact name.· When retrieving filenames from the files collection, filenames can’t be sorted. To return them in a specific order, you must add a subroutine to do it. Conclusion. In this article, we demonstrated a simple way to implement a file search, copy, move, and delete files and folders, and other useful features using File. System. Object. Next time, we will look at other code examples that will simplify your code.
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