[RESOLVED] Adding space every two digits or letters

Can someone show me how can i add a space after every two digits, letters or both in a RichTextBox???

In other words, instead of this:
00000000000000000000
00000000000000000000

Should be this:
00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00

Thanks...

Just simply loop thru the characters of the string step 2 and build your new string by appending the current 2 chars and a space to a stringbuilder object.
Some thing like this

Code:

---

Dim originalString As String = "your original string here"
Dim sb As New System.Text.StringBuilder()
Dim length As Integer = originalString.Length
If length >= 2 Then
    sb.Append(originalString.Substring(0, 2) & " ")
    For i As Integer = 2 To length - 1 Step 2
          sb.Append(originalString.Substring(i, 2) & " ")
    Next
    If length Mod 2 <> 0 Then
          sb.Append(originalString(length - 1))
    End If
Else
    sb.Append(originalString & " ")
End If
Dim modifiedString As String = sb.ToString

---

vb Code:

Function returnString(ByVal mystr As String, startpos As Integer) As String
 
if startpos > mystr.length - 2 Then
Return mystr
Else
 
Dim firstofst As string = Mid(mystr,1,startpos-1)
Dim thetwo As String = Mid(mystr, startpos+ 1, 2)
Dim newString As String = firstofst+thetwo+" "+Mid(mystr,startpos,mystr.length - startpos)
startpos = startpos + 3
returnString(newString, startpos)
 
End If
 
End Function

That function should work, it just recursively get what you need, gets the string from the beginning up to the startposition, then gets the correct two characters, adds a space, then adds the rest of the string, and does this until there is less than 2 characters left in that string.

If it doesn't work, please post back.

Justin Fox

I'm getting this error on this Line:
returnString(newString)

Error 36 Argument not specified for parameter 'startpos' of 'Public Function returnString(mystr As String, startpos As Integer) As String'. C:\Project1b.NET\frmMain.vb 1039 13 Project1

I probably made a mistake, How should i call that function??

I fixed it in the previous post's code.

I added the line " startpos = startpos + 3"

and the function should be called like " returnString(newString,startpos)"

Justin fox

ok, i really apreciate your help. I think i don't get it, should i need now to setup something else like telling where to look at?? i mean the name of the richtextbox? I'm getting Name not Declare for the newstring and the startpos on the command click event.

I put the function just like you posted and on the command_Click event i'm calling the function, but i guess i still need to do something in the command_click event...sorry to be so noobbb

ok, the code seems to work but once it finish adding the spaces it goes back and remove it one by one. I notice that in the debug.


Edited:
The code seems to be mixing the strings, don't know why.

Thanks for the help!

I think i solve it with this:

vb Code:

Dim stringpos As Integer = 1
        Dim i As Short
        For i = 1 To Len(RTB2.Text)
            Dim curstring As String = Mid(RTB2.Text, stringpos, 2)
            RTB3.Text = RTB3.Text & curstring & " "
            stringpos = stringpos + 2
        Next
        RTB2.Text = RTB3.Text
        RTB3.Text = vbNullString

sorry about that mess. this works just fine.

vb Code:

Function returnString(ByVal mystr As String) As String
        If mystr.Length < 2 Then
            Return mystr
        End If
        Dim i As Integer = 0
        Dim counter As Integer = 0
        Dim newString As String = ""
        While i < mystr.Length
            newString = newString + mystr.Chars(i).ToString
            i = i + 1
            counter = counter + 1
            If counter = 2 Then
                newString = newString + " "
                counter = 0
            End If
        End While
        Return newString
    End Function

Justin Fox

yea, you would just get the text in the richtexbox with

Dim userInput As String = Me.myrichtexbox.text

then

me.resultLabel.Text = returnString(userInput)


assuming that your richtextbox is named "myrichtexbox" and your label is named "resultLabel".


Justin Fox

That worked very nice also.

Thank you very much!

Quote:

---

Originally Posted by stanav

Just simply loop thru the characters of the string step 2 and build your new string by appending the current 2 chars and a space to a stringbuilder object.
Some thing like this

Code:

---

Dim originalString As String = "your original string here"
Dim sb As New System.Text.StringBuilder()
Dim length As Integer = originalString.Length
If length >= 2 Then
    sb.Append(originalString.Substring(0, 2) & " ")
    For i As Integer = 2 To length - 1 Step 2
          sb.Append(originalString.Substring(i, 2) & " ")
    Next
    If length Mod 2 <> 0 Then
          sb.Append(originalString(length - 1))
    End If
Else
    sb.Append(originalString & " ")
End If
Dim modifiedString As String = sb.ToString

---

---

Stanav, thank you very very very much. That one was a lot faster code. Didn't understand it first but now i do and really run fast.

Thanks to both for the help.