How to bind to a header of data grid view?

string myConnection = conn.ConnectionString.ToString();//"Data Source=MDT765;Initial Catalog=TST;User Id=user;Password=user@123;";
    SqlDataAdapter sqlcom0 = new SqlDataAdapter("SELECT Id,Name,Pos,Loc FROM Employee", myConnection);
    DataSet ds0 = new DataSet();
    sqlcom0.Fill(ds0);
    dataGridView1.DataSource = ds0.Tables[0].DefaultView;
    dataGridView1.Columns[0].HeaderText = "A";
    dataGridView1.Columns[1].HeaderText = "A1";
    dataGridView1.Columns[2].HeaderText = "A2";
    dataGridView1.Columns[3].HeaderText = "A3";

    dataGridView1.Refresh();