Incorrect tab order for nested controls.

Hi,

I have many different UserControls and Panels nested within each other in a Form. There are different input elements such as TextBox, Checkbox, etc. inside them.

Refer to the attached screen capture of the Designer with Tab Order being show:

The expected correct order (when I press “Tab” key at run time), should be:

0 -> 1 -> 2 -> 3 -> 3.0-> 3.1-> 3.1.0->  3.1.1 -> 3.2 -> 3.3 -> 3.3.0 -> 3.3.1 -> 3.3.2

However, When I run the application, the actual order become:

0-> 3.0 -> 3.1.0 -> 3.2.0 -> 3.1.1 -> 3.3.1 -> 3.2 -> 3.3.2

The problem seems that:

(1) Radio Button, having tab order 1 and 2, never get focus by pressing the Tab key.

(2) the system bypass the tab order of parent index. It go for controls with all index having 0 as the last digit, and then 1 and then 2 and so on.

Regards,

Felix CHAN