[RESOLVED] Read Multiline txt's

[TETYYS]

I Know How To Save Multi Line Txt's

System.IO.File.WriteAllText(OpenFileDialog1, RichTextbox1.text & vbCrLf & RichTextbox1.text & vbCrLf & Label1.text)

But How To Get/Read It Like

RichTextbox1.text = 'Some Multiline Read Code

[.paul.]

if it's just plain text:

RichTextbox1.text = io.file.readalltext(openfiledialog1.filename)

for rtf use the richtextbox loadfile method

[TETYYS]

no, i mean something like that :

Button sub
Textbox1.text = ReadMultilineText(RichTextbox1.text,3)'What To Read, Line Number

[jmcilhinney]

Your question doesn't make a lot of sense. If you want to read the entire file then you have already been shown. If you only want to read a specific line then it would probably have been a good idea to say that somewhere.

A multi-line text file is just a text file. The line breaks are characters too so, as far as the file is concerned, they are just like any other characters. .NET can read text files line by line by reading characters until a line break is detected. If you want to read one specific line, unless you know the exact location that that line starts, you have no choice but to read everything in the file up to and including that line.

If the file is relatively small then the simplest way to get a single line is to just read the lot into an array and then pick out the line you want by index, e.g.

Dim lines As String() = IO.File.ReadAllLines("file path here")
Dim line As String = lines(index)

That's a bit inefficient though, because you will likely end up reading data after the line you want that you don't have to. That's not a big deal for small files but for large files it's a concern. In that case, you should read and discard the lines before the one you want, e.g.

Dim line As String
 
Using reader As New IO.StreamReader("file path here")
    For i = 0 To index
        line = reader.ReadLine()
    Next
End Using

If that's not what you want, please provide a FULL and CLEAR description of the requirement.

[.paul.]

the rtb control has a lines property. to get the 3rd line you'd use

[rtbname].lines(2)

[TETYYS]

Thanks jmcilhinney and .paul.

the codes is exactly what i need .