DataGridView1显示问题

我在代码里面打
Try
            DataSet11.Clear() '清空数据集
            SqlDataAdapter1. = "select mb001,mb002,mb003,mb004,mb005 from t_stock"
            SqlDataAdapter1.Fill(DataSet11.t_stock)
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
有连接数据,但是就是不显示什么原因