We don't support firefox so we don't recommend using it. Are you not getting the Sendkeys method or seeing it available or does Sendkeys not work?
If you do not see the method try interrogating the frame (It should be one of the parents of the child you are trying to sendkeys to) and setting focus to the element you wish to interrogate and sending keys to that.
You won't be able to use the SendKeys method in the Chrome browser as of build 8.0.1028 since Studio/Runtime no longer injects native modules into the Chrome process. This means that form-level functions which require native injection, such as the SendKeys method, are no longer supported for the Chrome browser.
You should be able to use the SendKeys method in IE. You might need to perform the SendKeys method on the form level (as heffc mentioned above) instead of the specific control though.
Send keys is used for forms and can't be applied to webpage directly .So, if you wish to use send keys to webpage interrogate the same page by unchecking the "create global webpage " of the interrogation form then in the object explorer you can see the topmost control as form through which you can perform send keys operation.
I tried by unchecking that but it doesnt show sendkeys option
and i am not able to interrogate whole page its interrogating part of page can i expect it may be reason for not getting send keys because when I tried in firefox its getting interrogated for whole page and supports send keys but it wont supports interrogation of specific element