How to identify/(extract data from) particular row/col/cell in an object that has data in tabular/grid form?

 

First of all, both of you need to check whether the controls you are testing are on the list of the officially supported controls here. Official support means that TestComplete adds some additional methods and properties to the control's wrapper. It allows performing the most popular tasks over the controls easier.

Even if you don't find your controls on the list, you can still test them in TestComplete. You will need to use either additional TestComplete recognition features or native methods and properties of the controls. Information about these approaches is specified in the article I mentioned earlier.