Convert datatable to html table in c#

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

public static string Datatable2HTMLtable(DataTable dt)

{

       try

       {

              GridView dg = new GridView();

              dg.AutoGenerateColumns = true;

              dg.DataSource = dt;

              dg.DataBind();

              System.Text.StringBuilder sb = new System.Text.StringBuilder();

              System.IO.StringWriter sw = new System.IO.StringWriter(sb);

              HtmlTextWriter htw = new HtmlTextWriter(sw);

              dg.RenderControl(htw);

              return sb.ToString();

       }

       catch (Exception ex)

       {

              return "Datatable2HTMLtable ERROR: " + ex.Message;

       }

}