Read, and write to a text file

[decrypt]

How could i read and write to a text file? ie. read it, edit the information manually, save it...

 

[mutant]

Look into thoses two classes: System.IO.StreamReader and System.IO.StreamWriter.

 

[PureSc0pe]

I had asked about this before...

Click Here

 

[decrypt]

How would i get this:

	Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

		Dim line As String = ""

		Dim SR As New IO.StreamReader(TextBox2.Text)

		Dim SB As System.Text.StringBuilder = New System.Text.StringBuilder
		Do
			line = SR.ReadLine
			If line <> TextBox4.Text Then
				SB.Append(line)
				SB.Append(System.Environment.NewLine)
			End If
		Loop Until line = ""
		SR.Close()

		Dim SW As New IO.StreamWriter(TextBox2.Text, False)

		SW.Write(SB.ToString())
		SW.Close()

	End Sub

To read every line?

Also how would i read this from a file? (.txt file)

I want it to read the whole file and display it in a textbox... (like what notepad does)

 

[decrypt]

this doesn't seem to be working:

        Dim oFile As System.IO.File
        Dim oRead As System.IO.StreamReader
        oRead = oFile.OpenText("D:\Image.txt")
        Dim EntireFile As String
        EntireFile = oRead.ReadToEnd()
        TextBox2.Text = EntireFile

 

[PlausiblyDamp]

Any hints as to what you mean by 'doesn't seem to be working'? Does it give any errors? Does the file exist? Is anything else using the file?

 

[decrypt]

The problem is is that it doesn't read all the lines :/

 

[keitsi]

dim sr as streamreader = new streamreader("c:\test.txt")
do until sr.peek =< 0
debug.writeline sr.readline
loop

if you want to whole file at once you could try binary mode

 

[decrypt]

i've been wondering this for a while... what does debug.writeline do?

Is there anyway to change the debug.writeline to something that with textbox1.text...

 

[decrypt]

Yay, i got it working, i just mixed the two together:

        Dim line As String = ""
        Dim sr As System.IO.StreamReader = New System.IO.StreamReader("C:/text.txt")
        Do             
            line = sr.ReadLine
            If line <> TextBox2.Text Then
                TextBox2.AppendText(line)
                TextBox2.AppendText(System.Environment.NewLine)
            End If
        Loop Until line = ""

Do you know how i could do this now by writing to a file?

 

[Iceplug]

How could you do what by writing to a file?
To write to a file, use StreamWriter instead of StreamReader.

 

[CattleRustler]

debug.writeline() writes a string to the Output Window followed with a carriage return/line feed

it's used for debugging your app during runtime.

 

[decrypt]

How could you do what by writing to a file?
To write to a file, use StreamWriter instead of StreamReader.

i just want to know how you can write text to a text file, simply...

 

[PureSc0pe]

i just want to know how you can write text to a text file, simply...

Dim SW As New IO.StreamWriter("where to write") 
        SW.WriteLine("what to write")  'example: TextBox1.Text
        SW.Close()

 

[decrypt]

nice, that's simple thanks