This is still a problem.
Using Telerik Grid with Swedish Culture and EnableLinqExpressions="false" will generate a filter looking like this:
" AND ((startDate >= '2016-12-07,00:00:00') AND startDate <= '2016-12-22,23:59:59'))"
Since EnableLinqExpressions=false, this should be valid SQL, but it's not.
The format '2016-12-07,00:00:00' cannot be converted to a Date when running against a MS SQL with Swedish collation.
You will get a "The conversion of a varchar data type to a datetime data type resulted in an out-of-range value." error.
I must agree with Massimiliano, you should generat date in ISO format. That way this will always work.