String with the ErgoDataGrid working language abbrevation: for example, giving to this property the "en" value, it works in english.
Possible working languages are that for which there is the all words traduction inside the lang object, in the grid/lang.js file.
This property value, if omitted, is the GetLang() function return value.
To change language while the grid is working without reloading the whole page, use ChangeLanguage() function.
Default:
GetLang() return value.