Question

Using NumericUpDown control of C# winform application.

Set Maximun value as 99. But when I type value above 99, eg: 555, it allows me to key (key_press event )in values 555 and it changes back to max value (99) only if i leave the control. What i need is, user should not allowed to key in values more than 99. And also the default behaviour ‘Up and Down action’ values should not be affected by this. How do i do this?

Answer 1

Just a quick idea:

public class StrictNumericUpDown : NumericUpDown
{
    protected override void OnTextBoxTextChanged(object source, EventArgs e)
    {
        base.OnTextBoxTextChanged(source, e);
        if (Value > Maximum)
        {
            Value = Maximum;
        }
    }
}