Filling multiple queries on same table to a SqlDataAdapter

public SqlConnection con;

    public SqlCommand cmd;
    public SqlDataAdapter adp;
    public DataSet ds;
    
    public void Connection()
    {
        con = new SqlConnection("Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=accounting;Data Source=HOME-D5073E143B");
        con.Open();
    }
    public DataSet FillData(string MyString)
    {
        Connection();
        adp = new SqlDataAdapter(MyString,con);
        ds = new DataSet();
        adp.Fill(ds);
        
        return ds;
    }