these slides show you how to read, write, delete, move, copy and append a file in vb.net completely with examples.... By Ambreen Gillani

1. File Handling IN VB.NET
BY:
Ambreen Gillani

2. File Handling in vb.net:
 A file is a collection of data stored in a disk with a specific
name and a directory path. When a file is opened for
reading or writing , it becomes a stream.
 T he stream is basically the sequence of bytes passing
through the communication path. There are two main
streams: the input stream and the output stream. The input
stream is used for reading data from file (read operation)
and the output stream is used for writing into the file (write
operation).

3. Import Libraries for file handling:
 For file handling following system libraries are included.
 For stream reader and writer.

4. Interface:
 Interface for file handling is:

5.  By clicking on browse button following dialogue box will appear.

6.  The following will appear

7. Reading a file:
For reading from a file a stream writer is used
And after reading it the reading object is closed
This command reads all the contents of file to end end and displays on the
richtextbox.

8. Reading from a file (Code):

9. Writing a file:
For writing streamwriter object is used.
For writing data from rich text box
And after that the reading object is closed

10. Code:

11. Deleting a file:
 For deleting a file following command is used
 Stream reader and writer is not used here.

12. Deletion Code:

13. Moving a file from one location to other:
 The following command is used for moving a file from one location to the
other.

14. Code:

15. Copying a file:
 The following command is used for copying a file from one path to the other.

16. Code:

17. Appending a file:
 Appending is as same as writing the difference is that
 After that the streamwriter is closed.


18. Code:

19. Code for displaying the contents of file:

20. For opening a file:
 For opening a file a file dialogue box is used
 Open file dialogue box is dragged and dropped to the program.
 And following code is written:

21. Thankyou for
watching 