File class is using for the File operations in C#. We can create , delete , copy etc. operations do with C# File class.
How to create a File using C# File class ?
In order to create a new File using C# File class , we can call Create method in the File class.
Syntax : FileSttream File.Create(string FilePath)
FilePath : The name of the new File Object
CSharp Code : File.Create("c:\\testFile.txt");
How to check a File exist or not using C# File class ?
Before we creating a File object , we usually check that File exist or not. For that we are using the Exists method in the C# File class.
Syntax : bool File.Exists(string FilePath)
FilePath : The name of the File
bool : Returns true or false -
if File exist it Returns true else Returns false
CSharp Code : File.Exists("c:\\testFile.txt")
The following C# source code shows these operations :
using System;
using System.Windows.Forms;
using System.IO;
namespace WindowsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
if (File.Exists("c:\\testFile.txt"))
{
//shows message if testFile exist
MessageBox.Show ("File 'testFile' Exist ");
}
else
{
//create the file testFile.txt
File.Create("c:\\testFile.txt");
MessageBox.Show("File 'testFile' created ");
}
}
}
}
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