Input mask for a textbox

Posted on 1997-04-04
Last Modified: 2011-09-20
How do I have a input mask, like in Acces, for a text box.
I have tried Textbox1 = Format$(0000-0000000), for my telephone textbox. But user got to enter the -, can I display the - in the textbox.
Also how can I validate the data entered into the textbox, making sure that user enter the correct information. Is there a way that I can specify these checks in the properties. Upon error in the data entered, have a message to warn user. I have a lot of fields, do I have to create a msgbox for every field.
Question by:LarryTan

Accepted Solution

aktis earned 250 total points
ID: 1425051
The events you want are
1) KeyPress. Changing the KeyPress variable you can change one keystroke to another e.g. an non numberic ascii to "-"
2) LostFocus: fires when you leave the textbox and you can format the Text in the way you want

You can make a procedure with a parameter representing the current control. e.e.
Private Procedure RepairTelephone( cntrl as control)
end sub

Author Comment

ID: 1425052
REgarding about the KeyPress event, can you be more specific about it, I have tried playing around but couldn't get it working. Please show me how its done.

Expert Comment

ID: 1425053
Try adding a maskcontrol to your form.  Under properties enter the following for a phone number: ###-####.  By doing this your mask control will display the - mark and someone using your program will not have to enter it.  I usually name my mask controls like txtPhone, it's easier for me to keep up with it.  Here's the code I use in my lostfocus on this control.
Private Sub txtDate_LostFocus()
Dim I As Integer
DT1$ = Left$(txtDate.Text, 2): DT2$ = Mid$(txtDate.Text, 3, 2): DT3$ = Right$(Date$, 2)
CheckDate = DT1$ + ", " + DT2$ + ", " + DT3$
Print CheckDate
If IsDate(CheckDate) = False Then
beep: beep: beep: beep: beep: beep: beep
    Prompt = "Invalid date entered! Do you want to use today's date? " + txtDate.Text
    I = MsgBox(Prompt, vbYesNo)
If I = vbYes Then
    M1$ = Left$(Date$, 2): D1$ = Mid$(Date$, 4, 2): Y1$ = Right$(Date$, 2)
    UI$ = M1$ + "-" + D1$ + "-" + Y1$
    txtDate.Text = UI$

End If
End If
End Sub

Hope this helps...if you need to contact me:

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