It works for me. Thank you so much.

johnny_lan said:

Is there a property to hide the underline in the editor?

You can set the PromptChar property on the column to some other character, like a space. You could try an empty string, but I'm not sure if that will work.

column.PromptChar = " ";

Yes, you are correct. It works after I change the type to float. Is there a property to hide the underline in the editor?

Hi,

I took a look at your sample. It's not working because the DataType of your column is string. So there's no way the editor can do a numeric operation like adding 1 to the value, because it's not numeric.

Why are you storing numeric values as strings?

If you can, I would change it to a numeric type like Decimal or Double.

If you cannot, then you would have to use an EditorSpinButton and handle the Spin events yourself and modify the value in code.