oncelovecoffee,
In addition to the other comments, I would iterate over the array & write
each element as a line.
To read it back I would simply read each line.
I would consider using an ArrayList as they automatically expand as needed.
Something like:
Imports System.IO
Imports System.Text
Dim str_Array As New ArrayList
Dim input As New StreamReader("myfile.in", Encoding.Default)
Dim line As String = input.ReadLine()
Do Until line Is Nothing
str_Array.Add(line)
line = input.ReadLine()
Loop
Dim output As New StreamWriter("myfile.out", False,
Encoding.Default)
For Each line As String In str_Array
output.WriteLine(line)
Next
[color=blue]
> Actually I need i=1'000'000'000. :-([/color]
However if you really have a billion lines, you may want to consider
upgrading to .NET 64 bit edition, as 32 bit .NET only supports 2G of memory.
http://lab.msdn.microsoft.com/vs2005/
Unfortunately the 64 bit edition is only available as Beta 1 currently, you
will need to wait until sometime in 2005 for the release.
Alternatively consider reading only the line you need to work on and write
it.
Dim input As New StreamReader("myfile.in", Encoding.Default)
Dim output As New StreamWriter("myfile.out", False,
Encoding.Default)
Dim line As String = input.ReadLine()
Do Until line Is Nothing
' do something with line
output.WriteLine(line)
line = input.ReadLine()
Loop
Hope this helps
Jay
"oncelovecoffee" <oncelovecoffee@discussions.microsoft.com> wrote in message
news:5AC96AF1-A374-4907-BDDD-F343B9647A67@microsoft.com...[color=blue]
> str_Array() 'strings
> I need save it to file and next time i can read from file.
>
> --------------------------------------------------------
> --------------------------------------------------------
> Save Function
> I use
> str_FromAndToFile=join(str_Array,"VBTAB")
> --------------------------------------------------------
> Read Function
> I use
> str_Array=Split(str_FromAndToFile,"VBTAB")
> --------------------------------------------------------
> --------------------------------------------------------
>
> The problem is more str_Array() huge ,the code run more slowly.
>
> some cost value
> (C1.7-512M)
> str_Array(i) Read Cost Save Cost.
> 100000 1.2s 1.5s
> 1000000 2s 13s
> ...
>
> Actually I need i=1'000'000'000. :-(
> Could anyone help me to improve it or give me some efficiency source code?
>
> THX!
>
>
oncelovecoffee@hotmail.com[/color]
