numericUpDown

Question

is there a way to set a numericUpDown to only dispay the numers 2 , 10, and 310 ?

Answer 1

of course you could handle this in the Validating-Event, but IMHO it's better here to use a combobox with DropDownStyle set to DropDownList and as ItemsCollection the 3 numbers the users could choose from.

Regards,

  Thorsten

Answer 2

i think No, unless you subclass it :

class CustomNumUpDown : NumericUpDown
 {
 public override void UpButton()
 {
  if (Value == Maximum)
  Value = 10;
  else if (Value == 10)
  Value = Minimum;
 }
 public override void DownButton()
 {
  if (Value == Minimum)
  Value = 10;
  else if (Value == 10)
  Value = Maximum;
 }
 }

you can write more resuable class by adding a constructor accepts an array as parameter:

class CustomNumUpDown : NumericUpDown
  {
    List<decimal> numbers;
    public CustomNumUpDown(List<decimal> numbers)
      : base()
    {
      this.numbers = numbers;
      Minimum = numbers[0];
      Maximum = numbers[numbers.Count-1];
    }
    public override void UpButton()
    {
      int index = numbers.IndexOf(Value);
      if (index != numbers.Count -1)
        Value = numbers[index + 1];
    }
    public override void DownButton()
    {
      int index = numbers.IndexOf(Value);
      if (index != 0)
        Value = numbers[index - 1];
    }
  }

at the end you dont need of that =D, i did it for fun, you have more than one control (ComboBox, ListBox ..) are usefull for your case.

 

---

Alan-SY