dynamic gridview caption, c# codebehind

The attribute caption="Students" need to be dynamic based on session variable Session["type"] from event in code behind (grdHighLight_RowDataBound()).

Session["type"] = 1 -->  caption="Students"
Session["type"] = 2 -->  caption="Teacher"
Session["type"] = 3 -->  caption="Parent"

Question: How could this be done?

Important: Although a gridview tag included with the aspx file but it gets populated on the run via LoadData() event in load event.

Thank you.

   <div>
------------------------- aspx -----------------------                                   
   <asp:GridView runat="server" ID="grdHighLight"  caption="Students" onrowdatabound="grdHighLight_RowDataBound" CellSpacing="-1" GridLines="None" >
            
    </asp:GridView>

------------------------- aspx.cs ------------------
public partial class MasterPage2 : System.Web.UI.MasterPage
{
    SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ROD_July18ConnectionString"].ToString());
    RodCriteria rc = new RodCriteria();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            Session["StatType_ID"] = rc.ReadCriteria("StatIdS");
            Session["YYYY"] = rc.ReadCriteria("YYYY");
            Session["RegionID"] = rc.ReadCriteria("RegionId");
            Session["StatS"] = rc.ReadCriteria("StatS");
            LoadData();
            //GridView gview = new GridView();
            //gview = (GridView)Page.FindControl("grdHighLight");
            //gview.Caption = "<span style='color:Green;'>" + gview.Caption + "</span>";
        }
    }
    private GridView setupGridView(string caption, GridView gview)
    {

    private void LoadData()
    {
        SqlCommand cmd = new SqlCommand("spAuunuaCountMedCtr", con);
        cmd.Parameters.AddWithValue("@RegionID", Session["RegionID"]);
        cmd.Parameters.AddWithValue("@YYYY", Session["YYYY"]);
        cmd.Parameters.AddWithValue("@StatType_ID", Session["StatType_ID"]);
        cmd.CommandType = CommandType.StoredProcedure;
        try
        {
            con.Open();
            grdHighLight.EmptyDataText = "No Records Found";
            grdHighLight.DataSource = cmd.ExecuteReader();
            grdHighLight.DataBind();
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            con.Close();
            con.Dispose();
        }
    }
    protected void grdHighLight_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        // this event or elsewhere. This event is better because I can have more control when 
        // there are two grid views on a single form.

        if (e.Row.RowType == DataControlRowType.Header)
        {
            e.Row.CssClass = "headerBracketGround";
        }
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.CssClass = "highlightBracketground";
            var val = e.Row.Cells[2].Text;
            var snglVal = Single.Parse(val);
            e.Row.CssClass = snglVal > 0.0 ? "highlightBracketground" : "bracketground";
        }
    }
}

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