Dialog auto-resize

Dialog auto-resize

Hello guys;

I pop a dialog which contains two select (dropdownlist) controls. I use the first one to filter the second select.

My challenge is, whenever the second select width increases as a result of the data it contains, an horizontal scrollbar appears on the dialog which I don't want because, it disorganizes my form's appearance.

What do I need to do to auto-size the dialog's width as the width of the second select increases and shrinks as the case may be?

Thanking you guys in advance for the prompt response.