Gives a language code on the base of, in the order:
- "lang" querystring within the page containing ErgoDataGrid has been called;
- the same page grid.name+"lang" cookie;
- navigator.language or navigator.browserLanguage.
if the first value is null given value is the next.
| lang = grid.GetLang(name) |
| name | is the name utilized to memorize the grid working language in a cookie. |
| Gives a string. |