replacing contents of textbox on command button click

Hi,

In my textbox the user can enter as many 0 or 1 characters as they want.

For example:

"1110010101001"

Does anybody know how I can do this:

When the user clicks my Command1 button, all 0 characters in the text box are replaced with 1, and all 1 characters are replaced with 0?

Gracias

Code:

---

Dim A, AfterString As String
For A = 1 To Len(Text1)
If Mid(Text1, A, 1) = "1" Then
AfterString = AfterString + "0"
Else
AfterString = AfterString + "1"
End If
Next

---

No Problem use the following code

Code:

---

Option Explicit


Private Sub Text1_Change()

Static strOldText As String  'Holds old text string
Dim i As Integer

For i = 1 To Len(Text1.Text) 'Loop through each character in the text

    If Not (Mid$(Text1.Text, i, 1) = "0" Or Mid$(Text1.Text, i, 1) = "1") Then 'If Character is neither a 1 nor a 0

        Text1.Text = strOldText 'Set text to what it was before

        Text1.SelLength = 0 'Make sure no Text is selected

        Text1.SelStart = Len(Text1.Text) 'Move Cursor to end of text

        Exit Sub 'Don't do anything else

    End If

Next i

'If We've got to here then We've gone through all the text and it's all 1s and 0s
strOldText = Text1.Text 'Set variable to hold text

End Sub


Private Sub Command1_Click()

Dim i As Integer
Dim strOutput As String  'new text

For i = 1 To Len(Text1.Text) 'Loop through each character in the text

    Select Case Mid$(Text1.Text, i, 1)

        Case "0"  'Character is a 0

            strOutput = strOutput & "1"

        Case "1" 'Character is a 1

            strOutput = strOutput & "0"

    End Select

Next i

Text1.Text = strOutput 'Set text to output string

End Sub

---

Hope this Helps

Hi,

To check whether the user enters only zero or one in the
text box, use the following code.


Private Sub Text1_KeyPress(KeyAscii As Integer)
If Not (KeyAscii = 48 Or KeyAscii = 49) Then
KeyAscii = 0
End If
End Sub