How do I allow only a decimal point after an input of three digits in a textbox in VB.NET?
Let's say I inputed "123" after that I can only put a decimal else it wont allow any other input. So the result would be "123."
Dim KeyAscii As Integer KeyAscii = Asc(myE.KeyChar) Select Case KeyAscii Case Asc("0") To Asc("9"), Asc(ControlChars.Back) myE.Handled = False Case Asc(".") If InStr(myTextbox.Text, ".") = 0 Then myE.Handled = False Else : myE.Handled = True End If Case myE.KeyChar = Chr(127) myE.Handled = False Case Else myE.Handled = True End Select
