String literal exceeds 4000 character limit in expression.

Hi,

i have written an sql statement in expression  which has more than 4000 characters.As per my requirement i am using Ado.net source and have to filter the data using two parameters.So for Ado.net source it can be done only using expression.but when i have written the statement the expression is exceeding more than 4000 characters.I have read in other posts we can over come the issue by using script task.can some one please post the code how it can be done in script task? Any help is appreciated.

Thanks,

Kumar