Homework SoursePlease help me this VB question Two types of stream classes
Please help me this VB question
Two types of stream classes are the StreamReader and the StreamWriter.
(a) Briefly explain the difference between these two types of stream classes?
(b) Suppose you wish to open a file named DiskInfo.txt for input, however, you don’t know whether the file exists, write the lines of code necessary to open the file: (Remember: Use the file name as “DiskInfo.txt “)
(c) Assuming an application uses a list box named lstInventory, provide the necessary lines of code to writes the contents of the list box to the file Inventory.txt:
Remember: Use list box named lstInventory, and file name Inventory.txt )
Solution
Answer :
Two types of stream classes are the StreamReader and the StreamWriter.
(a) Briefly explain the difference between these two types of stream classes?
Answer :
5.StreamWriter class is derived from the abstract class called TextWriter..
6.The stream writer and reader classes are used for writing and reading data to text files.
Explanation:
StreamReader is used to read the characters in stream, StreamWriter is used to write.. Both are from System.IO.
These are the main differences between StreamReader and streamWriter.
| No | StreamReader | StreamWriter |
| 1. | System.IO namespace | 1.System.IO namespace |
| 2. | It reads bytes and transalate to characters. | 2.Characters written to it are encoded into bytes using a specified characterset |
| 3. | It is a bridge from byte streams to character streams. | 3.It is a bridge from character streams to byte streams. |
| 4. | Inherit from the abstract base class stream. | 4.Inherit from the abstract base class stream. |
| 5. | StreamReader class is derived from the abstract class called TextReader. | 5.StreamWriter class is derived from the abstract class called TextWriter.. |
