PeterHarding at 04:20, 15 March 2014

2014-03-15T04:20:43Z

← Older revision		Revision as of 14:20, 15 March 2014
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	[[Category:CSharp]]		[[Category:CSharp]]
	[[Category:Dot.NET]]		[[Category:Dot.NET]]
	[[Category:~~File Handling~~]]		[[Category:Working with Files]]

PeterHarding at 21:38, 25 November 2012

2012-11-25T21:38:12Z

← Older revision		Revision as of 07:38, 26 November 2012
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	~~h1.~~ Creating Text Files		=Creating Text Files=

	* http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx		* http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx
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	</pre>		</pre>

	~~h1.~~ Creating folders.		=Creating folders=

	* http://msdn.microsoft.com/en-us/library/as2f1fez.aspx		* http://msdn.microsoft.com/en-us/library/as2f1fez.aspx

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	</pre>		</pre>

	~~h1.~~ File Metadata		=File Metadata=

	* http://msdn.microsoft.com/en-us/library/system.io.file.getcreationtime.aspx		* http://msdn.microsoft.com/en-us/library/system.io.file.getcreationtime.aspx

PeterHarding: Created page with "h1. Creating Text Files * http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx

 class WriteTextFile     {         static void Main()         {              // These ex..."

2012-11-25T21:37:41Z

Created page with "h1. Creating Text Files * http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx <pre> class WriteTextFile { static void Main() { // These ex..."

New page

h1. Creating Text Files

* http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx

<pre>
class WriteTextFile
{
static void Main()
{

// These examples assume a "C:\Users\Public\TestFolder" folder on your machine.
// You can modify the path if necessary.

// Example #1: Write an array of strings to a file.
// Create a string array that consists of three lines.
string[] lines = {"First line", "Second line", "Third line"};
System.IO.File.WriteAllLines(@"C:\Users\Public\TestFolder\WriteLines.txt", lines);

// Example #2: Write one string to a text file.
string text = "A class is the most powerful data type in C#. Like structures, " +
"a class defines the data and behavior of the data type. ";
System.IO.File.WriteAllText(@"C:\Users\Public\TestFolder\WriteText.txt", text);

// Example #3: Write only some strings in an array to a file.
using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\Users\Public\TestFolder\WriteLines2.txt"))
{
foreach (string line in lines)
{
if (line.Contains("Second") == false)
{
file.WriteLine(line);
}
}
}

// Example #4: Append new text to an existing file
using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\Users\Public\TestFolder\WriteLines2.txt", true))
{
file.WriteLine("Fourth line");
}
}
}
/* Output (to WriteLines.txt):
First line
Second line
Third line

Output (to WriteText.txt):
A class is the most powerful data type in C#. Like structures, a class defines the data and behavior of the data type.

Output to WriteLines2.txt after Example #3:
First line
Third line

Output to WriteLines2.txt after Example #4:
First line
Third line
Fourth line
*/
</pre>

h1. Creating folders.
* http://msdn.microsoft.com/en-us/library/as2f1fez.aspx

<pre>
public class CreateFileOrFolder
{
static void Main()
{
// Specify a "currently active folder"
string activeDir = @"c:\testdir2";

//Create a new subfolder under the current active folder
string newPath = System.IO.Path.Combine(activeDir, "mySubDir");

// Create the subfolder
System.IO.Directory.CreateDirectory(newPath);

// Create a new file name. This example generates
// a random string.
string newFileName = System.IO.Path.GetRandomFileName();

// Combine the new file name with the path
newPath = System.IO.Path.Combine(newPath, newFileName);

// Create the file and write to it.
// DANGER: System.IO.File.Create will overwrite the file
// if it already exists. This can occur even with
// random file names.
if (!System.IO.File.Exists(newPath))
{
using (System.IO.FileStream fs = System.IO.File.Create(newPath))
{
for (byte i = 0; i < 100; i++)
{
fs.WriteByte(i);
}
}
}

// Read data back from the file to prove
// that the previous code worked.
try
{
byte[] readBuffer = System.IO.File.ReadAllBytes(newPath);
foreach (byte b in readBuffer)
{
Console.WriteLine(b);
}
}
catch (System.IO.IOException e)
{
Console.WriteLine(e.Message);
}

// Keep the console window open in debug mode.
System.Console.WriteLine("Press any key to exit.");
System.Console.ReadKey();
}
}
</pre>

h1. File Metadata

* http://msdn.microsoft.com/en-us/library/system.io.file.getcreationtime.aspx

<pre>
using System;
using System.IO;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
DateTime fileCreatedDate = File.GetCreationTime(@"C:\Example\MyTest.txt");
Console.WriteLine("file created: " + fileCreatedDate);
}
}
}
</pre>

[[Category:CSharp]]
[[Category:Dot.NET]]
[[Category:File Handling]]

Using Files in CSharp - Revision history

PeterHarding at 04:20, 15 March 2014

PeterHarding at 21:38, 25 November 2012

PeterHarding: Created page with "h1. Creating Text Files * http://msdn.microsoft.com/en-us/library/8bh11f1k.aspx
class WriteTextFile { static void Main() { // These ex..."