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+----- Thread: Read and delete lines (/showthread.php?tid=645)
Read and delete lines - brco900033 - 09-14-2012
Hello guys
I have a question; how can I read and delete a specific line from a textbox (multiline already set to true ofcourse). I searched a lot of forums but those codes always contains little errors.
Have a nice day!
Re: Read and delete lines - brco900033 - 09-14-2012
Sorry, forgot to enter some extra info:
- I want to delete a line that contains a part of a text
Re: Read and delete lines - brandonio21 - 09-14-2012
Are you referring to a sentence? Or an entire line?
Re: Read and delete lines - brco900033 - 09-15-2012
A line.
For example:
-the textbox contains:
I live in belgium
my name is brco
I'm 15 years old
...
-I search for 'My name'
-the second line contains 'my name' so that whole line will be deleted.
Re: Read and delete lines - brandonio21 - 09-15-2012
Ah, alright! Well this solution is rather fancy, if I don't say so myself.
So, I have created this method that completely removes a line from the textbox which contains a specified value.
[code2=vbnet]Public Sub RemoveLine(ByVal containing As String)
If (TextBox1.Text.Contains(containing)) Then
'Now, we need to find which line index contains the thing
Dim lineIndex As Integer = TextBox1.GetLineFromCharIndex(TextBox1.Text.IndexOf(containing))
'Now, let's delete that line
Dim lines As New List(Of String)
lines.AddRange(TextBox1.Text.Split(vbNewLine))
lines.RemoveAt(lineIndex)
'Now, reset the text
TextBox1.Text = String.Join(vbNewLine, lines.ToArray, 0, lines.Count)
End If
End Sub[/code2]
So, if you want to delete a line containing whatever TextBox2.Text has in it, for example, add a button to your form (Button1), then, just call this code from your button:
[code2=vbnet]RemoveLine(TextBox2.Text)[/code2]
Hopefully this works for you!
Re: Read and delete lines - brco900033 - 09-16-2012
Ah thanks! Needed this a lot <!-- s:mrgreen: --><img src="{SMILIES_PATH}/icon_mrgreen.gif" alt=":mrgreen:" title="Mr. Green" /><!-- s:mrgreen: -->
Re: Read and delete lines - brandonio21 - 09-16-2012
brco900033 Wrote:Ah thanks! Needed this a lot <!-- s:mrgreen: --><img src="{SMILIES_PATH}/icon_mrgreen.gif" alt=":mrgreen:" title="Mr. Green" /><!-- s:mrgreen: -->No problemo!