Question about reading text-files

[Mika M]

Hi!

I'm trying to make something like this to work with VB.NET 2003...

Dim sr As StreamReader = New StreamReader("C:\MyFile.txt")
Dim strLine As String

While ((strLine = sr.ReadLine()) <> Nothing)
'// Doing something here
End While

....but can't get it to work. What's wrong with that?

I have studied some Java basic programming earlier, and in this case I'm
trying to make an idea from java code...

while ((strLine = br.readLine()) != null) // br = BufferedReader

....to convert to work using VB 2003.

 

[Meelis Lilbok]

Dim sr As StreamReader = New StreamReader("C:\MyFile.txt")
Dim strLine As String

strLine=sr.ReadLine()
While Not strLine Is Nothing
'//Do something here

input = sr.ReadLine()
End While
sr.Close()


Hope this helps!

Meelis

 

[Cor Ligthert [MVP]]

Mika,

The most easiest one in this case

\\\
Dim sr As StreamReader = New StreamReader("C:\MyFile.txt")
Dim strLine As String = sr.readtoend
///
However set it in a try and catch block for if the file does not exist.
\\\
dim strLine as String
Try
strLine = sr.ReadToEnd
Catch ex
messagebox.show(ex.tostring) 'in a more decent way
End Try
///

I hope this helps,

Cor

 

[Meelis Lilbok]

sry
input = sr.ReadLine() must be strLine=sr.ReadLine()


Meelis

Dim sr As StreamReader = New StreamReader("C:\MyFile.txt")
Dim strLine As String

strLine=sr.ReadLine()
While Not strLine Is Nothing
'//Do something here

input = sr.ReadLine()
End While
sr.Close()


Hope this helps!

Meelis

 

[Mika M]

Yes I know basic ways to read file. In fact I was just trying to join
reading line and checking if the last line was reached, to save code
lines because "simple is beautiful" in my mind

Obviously that's not possible when using VB.NET

 

[Herfried K. Wagner [MVP]]

I'm trying to make something like this to work with VB.NET 2003...

Dim sr As StreamReader = New StreamReader("C:\MyFile.txt")
Dim strLine As String

While ((strLine = sr.ReadLine()) <> Nothing)
'// Doing something here
End While

The problem is that '=' is interpreted as comparison operator when being
used in the 'While' condition. Working solutions can be found here:

Reading a text file line-by-line or blockwise with a progress indicator
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=readfile&lang=en>

 

[Guest]

you could also try this way

Private sr as StreamReader = new StreamReader("C:\MyFile.txt")


do

me.textbox1.text = sr.readline()

loop while sr.peek > -1