How to change the order of columns in a GridView using Asp.Net C #

I have a grid that is anchored by code where I also want to display the template field.

I am generating 3 columns in a DataTable to represent the grid, and the template field is a TextBox control.

My code for data binding ...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;


public partial class gr4 : System.Web.UI.Page
{
    SqlConnection cn;
    SqlCommand cmd;
    SqlDataAdapter da;
    DataSet ds;

protected void Page_Load(object sender, EventArgs e)
{
    cn = new SqlConnection("Data Source=AMIR-PC\\MOHEMMAD;Initial Catalog=CRM_InvestPlus;Integrated Security=True");
    string query = "Select Capacity from Dealer_License_Capacity where ID='D00001' and Software_ID='001' and Version_ID='1'";
    cn.Open();
    cmd = new SqlCommand(query,cn);
    da = new SqlDataAdapter(cmd);
    ds = new DataSet();
    da.Fill(ds);
    cn.Close();

    DataTable dt = new DataTable();
    dt.Columns.Add("Name", typeof(string));
    dt.Columns.Add("Software_Name", typeof(string));
    dt.Columns.Add("Version_Name", typeof(string));

    int count = Convert.ToInt32(ds.Tables[0].Rows[0][0].ToString());

    for (int i = 0; i < count; i++)
    {
        DataRow dr = dt.NewRow();
        dr["Name"] = "aaa";
        dr["Software_Name"] = "bbb";
        dr["Version_Name"] = "ccc";

        dt.Rows.Add(dr);
    }

    GridView1.DataSource = dt;
    GridView1.DataBind();
   }
}

      

        
        
        
      

    

My original code for the grid view:
     

    <asp:GridView ID="GridView1" runat="server">
    <Columns>

        <asp:TemplateField>
            <ItemTemplate>
                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
            </ItemTemplate>
        </asp:TemplateField>

    </Columns>
    </asp:GridView>

</div>
</form>

      

        
        
        
      

    

Grid display template field as first column, but I want to display template field as last column in output. Can I add more template fields to this grid.

Please, help..

Thank you in advance