How to explicitly convert type in Dynamic Linq Core?

Question

I read the doc on Dynamic Linq Core here, where it says

The expression language allows explicit conversions using the syntax type (expr), where type is a type name optionally followed by ? and expr is an expression. This syntax may be used to perform the following conversions:

I'm having a hard type following this instruction, so far I tried

.Select("new (Key.Date, Key.t, Sum(cashflow) as Profit, (double)Sum(cashflow) as TestConvertType)");

and

.Select("new (Key.Date, Key.t, Sum(cashflow) as Profit, Sum(cashflow).type(double) as TestConvertType)");

and I got

"'.' or '(' or string literal expected"

I also tried:

.Select("new (Key.Date, Key.t, Sum(cashflow) as Profit, Convert.ToDouble(Sum(cashflow)) as TestConvertType)");

"LINQ to Entities does not recognize the method 'System.Decimal ToDecimal(Double)' method, and this method cannot be translated into a store expression."

None worked. Can someone give me an example on how to explicitly convert type in Dynamic Linq?

Answer 1

ok got it.. just use Type(expression)

.Select("new (Key.Date, Key.t, Sum(cashflow) as Profit, Double(Sum(cashflow)) as TestConvertType)");