Sql Server CE - The column name is not valid. [ Node name (if any) = ,Column name = ]

I have the sql like this SELECT 2, COUNT(3) AS [C3]

I run using ADO.NET using System.Data.SqlServerCe.dll and got this error

The column name is not valid. [ Node name (if any) = ,Column name =  ]

Then I try in Sql Server Studio, the funny thing it works fine :

SELECT 2, COUNT(3) AS [C3] - Works and produce the result  :   2,  1

 , but

SELECT COUNT(3) AS [C3] - it throw error The column name is not valid. [ Node name (if any) = ,Column name =  ]

, and

SELECT COUNT(3) AS [C3], 2 - Works and produce the result  :   1 , 2

SELECT COUNT(3) AS [C3], COUNT(3) AS [C31] - it throw errorThe column name is not valid. [ Node name (if any) = ,Column name =  ]

It's hard to be advanced programmer