calling Extention Method with 'this double' in C#

Question

im converting string to code for runtime compile using code dom, so i really need to know if its possible to call static method with 'this double', before i manage to write more complex code to produce correct string

i have method

public static double Test(this double x)
{
   //some code here...
}

and i want to call it like

double d = 5.Test();//Compiler Error: Cannot resolve symbol Test

i know this is possible for strings but i cant do the same thing for double. how can i do this also if its not possible why its possible for string? thanks for help.

`5` does not have type `double`, it has type `int`. What error (if any) do you get when actually trying it with `double`? — , Apr 10 '15 at 12:03
oh thanks. i didnt notice 5 is integer ...fixed problem using ((double)5) also 5.0 worked well. tnx — M.kazem Akhgary, Apr 10 '15 at 12:06

score 10 · Accepted Answer · edited May 23 '17 at 11:44

10

declare your 5 as a double, right now it's an integer.

double d = 5D.Test();

Here's the list of numeric suffixes C# uses.

edited May 23 '17 at 11:44

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answered Apr 10 '15 at 12:03

Jonesopolis

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calling Extention Method with 'this double' in C#

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