NumericUpDown - Number + unit

[yala]

I would like to use a NumericUpDown and add the unit (feet, ...) after the number.
This is made by extending the NumericUpDown class and overriding the UpdateEditText method like that:
protected override void UpdateEditText()
{
//Let the base component format the number according to the different properties
base.UpdateEditText();
//Add the unit
base.ChangingText = true;
base.Text = base.Text + " " + unit;
base.ChangingText = false;
}

But the problem is when a user change a part of the text in the textbox,
the ParseEditText method cannot parse a string like "2 feet",
and i cannot override this method like it is not virtual or abstract in the base class (Why did Microsoft do that?).

Please help me to find a solution.

Thanks in advance

[Jost Lindemann]

Hi yala,

may it help to implement "numericUpDown1_Validating". So you can check the value entered in the box and evaluate it for your needs.


Regards
Jost

[jhammer]

From my exprerience with the NumericUpDown control - I advice you to go to different directions.
For example: Create a UserControl, put a NumericUpDown, so the TextBox will not be visible (resize it) and only the UpDown arrows will be shown. Add a TextBox. So far, the control looks exactly like a NumericUpDown, except the arrows doesn't do anything. So catch both TextChanged of the TextBox and ValueChanged of the NumericUpDown in order to sync those two.
Add a Value property, and a ValueChanged event, and you have got your self a fine custom NumericUpDown.