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+---- Thread: ~[VB.NET]~ [TUT] How To Write To/Read A Text File (/showthread.php?tid=16226)
~[VB.NET]~ [TUT] How To Write To/Read A Text File - ThePrinCe - 02-17-2011
How to write to a text file
We can StreamWriter class to write to a file. The Write method is used to write to a text file.
In the StreamWriter constructor, the first parameter is the file name and second parameter is optional, boolean type. If second parameter is true, an existing file will be appended with new text. Otherwise it will erase old text and start with new text.
Code:
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We can StreamWriter class to write to a file. The Write method is used to write to a text file.
In the StreamWriter constructor, the first parameter is the file name and second parameter is optional, boolean type. If second parameter is true, an existing file will be appended with new text. Otherwise it will erase old text and start with new text.
Module Module1
Sub Main()
Dim fileName As String = "C:\Mahesh\McTextFile.txt"
Using reader As New System.IO.StreamReader(fileName)
While Not reader.ReadLine() Is Nothing
Console.WriteLine(reader.ReadLine())
End While
End Using
Try
Using writer As New System.IO.StreamWriter(fileName, True)
writer.WriteLine("New text")
writer.WriteLine("New text line goes here")
End Using
Catch ex As Exception
End Try
Console.ReadKey()
End Sub
End ModuleHow to read a text file
We can use StreamReader to read text files. The following code snippet reads a file and writes on the console line by line.
Code:
Module Module1
Sub Main()
Dim fileName As String = "C:\Mahesh\McTextFile.txt"
Using reader As New System.IO.StreamReader(fileName)
While Not reader.ReadLine() Is Nothing
Console.WriteLine(reader.ReadLine())
End While
End Using
Try
Using writer As New System.IO.StreamWriter(fileName, True)
writer.WriteLine("New text")
writer.WriteLine("New text line goes here")
End Using
Catch ex As Exception
End Try
Console.ReadKey()
End Sub
End ModuleI Hope That Will Help
