Maskedtextbox only accept a value with two decimals (VB Windows form)

Question

Hello,

I'm building an calculator in Visual Studio (Visual Basic) and I'm stuck with the Maskedtextbox control. I want that the user only can give a value with two decimals. A value of 2.20 needs to be accepted and a value of 99.93. I want a code that only accept a value between 1 and 100 with two decimals.

If value.MaskCompleted = true Then 
Value * 2
Else
MsgBox("The calculator only accept a value with two decimals!", , "Input"
End if

I now have my mask set to ###.00, but my output is shown with two blank lines when I have a input of 9,93.

Is my idea possible with the Maskedtextbox control?

Thanks in advance

Jonathan 

Answer 1

Hi Jonathan.12,

Welcome to MSDN forum.

The maskset is used to limit the format entered by the user. For example "###.00", it means that the input must be 3 integers and 2 decimals and if just input 1 or 2 integers, you need to press space. So to judge 2 integers, we need to delete the spaces within "value".

Private Sub MaskedTextBox1_Validating(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles MaskedTextBox1.Validating

Dim value As String = Me.MaskedTextBox1.Text

value = Replace(value, " ", "") 'delete space'

If Convert.ToDouble(value) >= 100 Then
   MsgBox("The calculator only accept a value with two decimals!", , "Input")
Else
   MsgBox("ok", , "Input")
End If

End Sub

Hope it could help you.

Best Regards,

Dylan

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Answer 2

Thank you, it is working.