Question

I need to add some functionality where the user is allowed to pick ranges of numbers, for example <= 5, <= 15, > 15, etc.

I was looking for some existing component I can use before rolling my own but didn’t have any luck.

• Does anyone know of a simple math library/control that will let the user select such ranges, using the typical inequality signs?

• If there is nothing already built, I was thinking about how I would achieve this. My plan was to maybe create a control that is a combination of a dropdown and a numeric-only textbox. The dropdown would be populated with all of the inequality signs and the text box would accept the number. Any other ideas?

Thank you.

Answer 1

A ComboBox pull down with operator and a text box is how I did it. You can use the keydown event to reject anything but numbers.