Date format after deployment asp.net application

[inzithkr]

i am using the code
loadcommand.Par ameters.Add(new SqlParameter(IF romDt_PARAM, SqlDbType.VarCh ar,10));

the date format in develped system M/d/yyyy
but deployed in server format changed as dd-MM-yyyy.

Deployed server using windows 7(iis 7.1)
my local system using windows xp and iis 5.1

what is the actual problem