Tab navigation Issue In data grid

[Kirti]

I have tab under which there is my user control containing 2 telerik datagrids and other controls like textbox and buttons. When i navigate using tab key for the  first time it goes through controls in order which i defined by using tab index and also go inside the datagrid cell but on row selection it again go back to main tab and after completing one cycle when i start tabbing again and then when i reach datagrid it skip the datagrid rows and go to the next control . i have defined the keyboardnavigation.Tabindex for each control.and keyboardnavigation.tabnavigation="cycle" and for datagrid i have defined keyboardnavigation.tabnavigation="local".