Is there a way in a TemplateForm, to set a button such that hitting Enter while in any textbox of that TemplateForm, will trigger a button's click event, as is available in other environments?
No, there is no such way. However hitting enter will submit the form as long as you have a button whose type is set to submit (which is the default and expected behavior).
In that case, is there a way to set a hotkey to give the button focus?
This article might help you:
Since using the <u> tag doesn't work, is there a way to underline the letter on the button?
You can add a custom attribute to your textbox:
Name: onkeydown
Value: if (event.key == 'Enter'){//do something}
However, I was not able to invoke the click of a button using code like this:
if (event.key == 'Enter'){document.getElementById('btnSearch').click();}
In my case, it seams as if the click handler does get executed (I can see that the query is run) but I did not see any changes in the UI/grid. Maybe it is not enough to just call .click()
Maybe some else has an idea!