Input and Output C # file

C # I / O type

System.IO namespace have a variety of classes for performing various file operations, such as creating and deleting files, reading or writing files, closing files.

The following table lists some of the System.IO namespace commonly used non-abstract class:

FileStream Class

System.IO namespaceFileStream class to read and write and help close the file.This class is derived from the abstract class Stream.

You need to create aFileStream object to create a new file, or open an existing file.Creates aFileStream object syntax is as follows:

FileStream <object_name> = new FileStream (<file_name>,
<FileMode Enumerator>, <FileAccess Enumerator>, <FileShare Enumerator>);

For example, create a FileStream object to read the file namedF sample.txtof:

FileStream F = new FileStream ( "sample.txt", FileMode.Open, FileAccess.Read, FileShare.Read);

Examples

The following program demonstrates theFileStream class usage:

using System;
using System.IO;

namespace FileIOApplication
{
    class Program
    {
        static void Main (string [] args)
        {
            FileStream F = new FileStream ( "test.dat", 
            FileMode.OpenOrCreate, FileAccess.ReadWrite);

            for (int i = 1; i <= 20; i ++)
            {
                F.WriteByte ((byte) i);
            }

            F.Position = 0;

            for (int i = 0; i <= 20; i ++)
            {
                Console.Write (F.ReadByte () + "");
            }
            F.Close ();
            Console.ReadKey ();
        }
    }
}

When the above code is compiled and executed, it produces the following results:

1,234,567,891,011,121,314 151617181920-1

C # Advanced file operations

The above example demonstrates a simple C # file operations. However, to take full advantage of C # System.IO class of powerful, you need to know these common classes of properties and methods.

In the following sections, we will discuss these classes and the operations they perform. Click on the link to learn more about the various parts of knowledge: