"cann't convert from myproject.sqlconnection to sql.Data.sqlclient.sqlconnection"
protected void CalculationAddToDataBase()
{
sqlconnection conn = new sqlconnection(ConfigurationManager.ConnectionStrings["connectionstring"].ConnectionString);
conn.Open();
SqlCommand cmd = new SqlCommand("USP_PsychoetricCalculationTable",conn);
cmd.CommandType=CommandType.StoredProcedure;
}