问题
the following code
Dim dc = New DataColumn(name, GetType(Double), "[col1] ^ [col2]")
produces the following error:
The expression contains unsupported operator '^'.
Is this right, is the power operand not support in datacolumn expressions???
Anyone have an idea how i'd write this?
回答1:
Yes. it is not supported.
You could use RowChanging event of DataTable to set the value of the new column using c#.
来源：https://stackoverflow.com/questions/982754/datacolumn-expression-power