How can i display column names Dynamically ?

Hi All,

string conString = "Provider=MSOLAP.4;Initial Catalog=Adventure Works DW 2008R2;Data             

               Source=Servername";
           string cmdQuery = txtQuery.Text;
   AdomdConnection con = new AdomdConnection(conString);
           AdomdCommand cmd = new AdomdCommand(cmdQuery,con);
           con.Open();
           DataTable dt2 = new DataTable();
            AdomdDataAdapter da = new AdomdDataAdapter(cmd);
             da.Fill(dt2);
            int numberColumns = dt2.Columns.Count - 1;
            dt2.Columns[1].ColumnName = "Sales Amount";
            dt2.Columns[0].ColumnName = "Product";
            GridView2.DataSource = dt2;
            GridView2.DataBind();

Here i am doing hardcode for the column name...... when i change the query i want to display column name Dynamically in my FrontEnd.

Can any one Guide me the way How to Approach it?

Regards  

JHKiran