Writing Text to a File
The following code example shows a simple way to write text to a text file.
Imports System Imports System.IO Class Test Public Shared Sub Main() ' Create an instance of StreamWriter to write text to a file. Dim sw As StreamWriter = New StreamWriter("TestFile.txt") ' Add some text to the file. sw.Write("This is the ") sw.WriteLine("header for the file.") sw.WriteLine("-------------------") ' Arbitrary objects can also be written to the file. sw.Write("The date is: ") sw.WriteLine(DateTime.Now) sw.Close() End Sub End Class [C#]using System; using System.IO; class Test { public static void Main() { // Create an instance of StreamWriter to write text to a file. // The using statement also closes the StreamWriter. using (StreamWriter sw = new StreamWriter("TestFile.txt")) { // Add some text to the file. sw.Write("This is the "); sw.WriteLine("header for the file."); sw.WriteLine("-------------------"); // Arbitrary objects can also be written to the file. sw.Write("The date is: "); sw.WriteLine(DateTime.Now); } } }
The following code example creates a new text file and writes a string to it.
Option Explicit On Option Strict On Imports System Imports System.IO Public Class TextToFile Private Const FILE_NAME As String = "MyFile.txt" Public Shared Sub Main() If File.Exists(FILE_NAME) Then Console.WriteLine("{0} already exists.", FILE_NAME) Return End If Dim sr As StreamWriter = File.CreateText(FILE_NAME) sr.WriteLine("This is my file.") sr.WriteLine("I can write ints {0} or floats {1}, and so on.", 1, 4.2) sr.Close() End Sub End Class [C#]using System; using System.IO; public class TextToFile { private const string FILE_NAME = "MyFile.txt"; public static void Main(String[] args) { if (File.Exists(FILE_NAME)) { Console.WriteLine("{0} already exists.", FILE_NAME); return; } StreamWriter sr = File.CreateText(FILE_NAME); sr.WriteLine ("This is my file."); sr.WriteLine ("I can write ints {0} or floats {1}, and so on.", 1, 4.2); sr.Close(); } }
See Also
Creating a Directory Listing | Reading and Writing to a Newly Created Data File | Opening and Appending to a Log File | Reading Text from a File | Reading Characters from a String | Writing Characters to a String | Basic File I/O | StreamWriter | File.CreateText
Show: