A file is a collection of data and information and a Directory is a location in the computer where files are stored. The word File Handling refers to the various operations such as creating files, reading files, writing to files, and appending the file. Reading and writing files are two basic operations that are commonly used in file handling. In C#, the FileStream class provides a stream for file operations, allowing us to easily read and write data to files. A stream is a collection of bytes that are used to communicate.
File Handling Classes:
Here are some commonly used classes in the System.IO namespace:
- FileStream: It is a class used for reading and writing files.
- StreamReader: It is used to read characters from a Stream.
- StreamWriter: It is a class that writes characters in a particular encoding to a stream.
- BinaryReader: It is used to read binary information from the stream.
- BinaryWriter: It is used to write binary information into the stream.
- StringReader: It is used to read data from a string buffer.
- StringWriter: It is used to write data to a StringBuilder class.
- FileInfo: It is used to perform file operations.
- DirectoryInfo: It is used to perform operations on directories.
StreamWriter Methods:
- Close() – It closes the underlying stream and the current StreamWriter object.
- Flush() – It clears all buffers for the current writer.
- Dispose() – It releases all resources used by the TextWriter object.
- Equals() – It checks if the specified object is equal to the current object.
StreamReader Methods:
- Close() – It closes the underlying stream and the current StreamReader object.
- Peek() – It is used to return the next available character but does not consume it.
- Read() – It reads the next character from the input stream to advance the character position.
- ToString() – It returns a string that represents the current object.
The following section contains C# programs on files, directories, file operations, and System.IO namespace classes like StringReader, StringBuilder, StringWriter, BinaryReader, Memory Stream, StreamReader, and StreamWriter. Every example program includes the problem description, problem solution, C# code, program explanation, and run-time test cases. All C# examples have been compiled and tested on Visual Studio.
Here is the listing of C# programming examples on File Handling:
- C# Programs on Files and Directories
- C# Programs on File Operations
- C# Programs on StringReader, StringBuilder and BinaryReader
- C# Programs on StringWriter and Memory Stream
- C# Programs on StreamReader and StreamWriter
1. C# Programs on Files and Directories
| Program | Description |
|---|---|
| Create a New File in C# | C# Program to Create a File |
| Create Directory in C# | C# Program to Create a Directory |
| Program to Read File Content in C# | C# Program to Read a Text File |
| C# Program to Check Information of the File | C# Program to Check the Information of the File |
| View the Access Date and Time of a File in C# | C# Program to View the Access Date and Time of a File |
| Program to Search Directories and List Files in C# | C# Program to Search Directories and List Files |
| Check if File Exists in C# | C# Program to Check if File Exists or Not |
| List Files in Directory in C# | C# Program to List Files in Directory |
2. C# Programs on File Operations
| Program | Description |
|---|---|
| Copy One File to Another File in C# | C# Program to Copy the Contents of One File to Another File |
| File Comparison in C# | C# Program to Compare Two Text Files |
| Calculate Directory Size in C# | C# Program to Calculate the Size of Folder |
| Get File Time using File Class in C# | C# Program to Get File Time using File Class |
| Trap Events from File in C# | C# Program to Trap Events from File |
| List Disk Drives in C# | C# Program to List All Available Disk Drives |
3. C# Programs on StringReader, StringBuilder and BinaryReader
| Program | Description |
|---|---|
| StringReader in C# | C# Program to Demonstrate StringReader |
| StringBuilder in C# | C# Program to Demonstrate StringBuilder |
| Binary Reader in C# | C# Program to Demonstrate BinaryReader |
| Binary Writer in C# | C# Program to Demonstrate BinaryWriter |
4. C# Programs on StringWriter and Memory Stream
| Program | Description |
|---|---|
| StringWriter in C# | C# Program to Demonstrate StringWriter |
| Memory Stream Class in C# | C# Program to Demonstrate Memory Stream Class |
| Convert Stream to Chars in C# | C# Program to Read Data from Stream and Convert Data to Chars |
| Read Bytes from File in C# | C# Program to Get Content from a File and Read the Content 1 Byte at a Time |
5. C# Programs on StreamReader and StreamWriter
| Program | Description |
|---|---|
| Read All Line using StreamReader in C# | C# Program to Read All Lines using StreamReader |
| File Operations in C# | C# Program to Perform File Operations |
| Read a File Line by Line in C# | C# Program to Read Lines from a File until the End of File is Reached |
| Get File Time using File Class in C# | C# Program to Get File Time using File Class |
| FileInfo Class in C# | C# Program to Illustrate Methods of FileInfo Class |
