BLL methods not appearing in object data source

this is my DAL
public DataSet GetShoppingCart(string userID)
{

SqlConnection conn;
StringBuilder sql;
SqlDataAdapter da;
DataSet PCData;

conn = dbConn.GetConnection();
PCData = new DataSet();
sql = new StringBuilder();
sql.AppendLine("SELECT * FROM BQ_ShoppingCart");
sql.AppendLine("WHERE userID = @userID");

try
{
conn.Open();
da = new SqlDataAdapter(sql.ToString(), conn);
da.SelectCommand.Parameters.AddWithValue("@userID", userID);
da.Fill(PCData);
}

catch (Exception ex)
{
errMsg = ex.Message;

}

finally
{
conn.Close();

}

return PCData;
}

and my BLL:
public DataSet GetShoppingCart(string userID)
{
BQ_DAL dlSc = new BQ_DAL();
return dlSc.GetShoppingCart(userID);
}

by right the method should appear right?