>Out of curiosity : can you provide an example of the input string ?

An example of an input string is usually a SQL select such as:

SELECT Member.FirstName,Member.LastName,Member.Bann,Member.Register,Member.Blog,Member.Cie,Member.NoProvince,
Province.Title_E AS Province,Country.Title_E AS Country,Member.City,Member.NoCountry,Member.Http,Member.LastAccess
FROM Member (NOLOCK)
LEFT JOIN Province ON Member.NoProvince=Province.Numero
INNER JOIN Country ON Member.NoCountry=Country.Numero
WHERE Member.Numero=@Numero