[REPOST] The data source does not support server-side data paging. I want paging in gridview in asp.net

<asp:GridView ID="GridView2" runat="server" GridLines="None" AutoGenerateColumns="false" PageSize="1"
               onrowdatabound="GridView2_RowDataBound" align="center"
                OnPageIndexChanging="GridView2_PageIndexChanging" AllowPaging="true" >
               <PagerSettings FirstPageText="first" LastPageText="last" PageButtonCount="4" />
               <AlternatingRowStyle BackColor="White" />
               <RowStyle BackColor="#CCCCCC" />

           </asp:GridView>

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;

namespace tables
{
    public partial class Internship : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            
            if (!IsPostBack)
            {
                
                Recentinternship();
                
            }



        }

//for getting data in gridview

        protected void Recentinternship()
        {
            SqlConnection con = new SqlConnection("Data Source=jayraj-pc\\sqlexpress;Initial Catalog=Internship;Integrated Security=True;Pooling=False");
            con.Open();
            string str = "select B.CompanyLogo as ' ',A.Title,A.InternshipStartDate,A.ApplicationDeadline,A.Duration,A.InternshipCity,A.Category,A.Stipend,A.InternshipID,A.Degree,A.Branch,A.CompanyID,A.Title,A.CompanyName from Internship AS A INNER JOIN  Companies AS B ON A.CompanyID=B.CompanyID ";
            
            SqlDataAdapter da = new SqlDataAdapter(str, con);
            DataSet ds = new DataSet();
            da.Fill(ds, "0");

            

            GridView2.DataSource = ds.Tables["0"].ToString();
            GridView2.DataBind();
           
            con.Close();
        }
       
       

       

        protected void GridView2_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            string str = " Category :" + e.Row.Cells[6].Text + "<br/>Duration :" + e.Row.Cells[4].Text + "<br/>InternshipCity :" + e.Row.Cells[5].Text + "<br/>Stipend :" + e.Row.Cells[7].Text + "<br/>InternshipStartDate :" + e.Row.Cells[2].Text + "<br/>ApplicationDeadline :" + e.Row.Cells[3].Text + "<br/>Required Degree :" + e.Row.Cells[9].Text + "<br/>Required Branch :" + e.Row.Cells[10].Text;
            e.Row.Cells[1].Text = str;

            //e.Row.Cells[1].Visible = false;
            //e.Row.Cells[2].Visible = false;
            e.Row.Cells[3].Visible = false;
            e.Row.Cells[4].Visible = false;
            e.Row.Cells[5].Visible = false;
            e.Row.Cells[6].Visible = false;
            e.Row.Cells[7].Visible = false;
            e.Row.Cells[8].Visible = false;
            e.Row.Cells[9].Visible = false;
            e.Row.Cells[10].Visible = false;
            e.Row.Cells[11].Visible = false;
            e.Row.Cells[12].Visible = false;
            e.Row.Cells[13].Visible = false;


            if (GridView2.Rows.Count > 0)
            {
                GridView2.HeaderRow.Cells[0].Text = " ";
                GridView2.HeaderRow.Cells[1].Text = " ";
                GridView2.HeaderRow.Cells[2].Text = " ";

            }

            Image img = new Image();
            img.ID = "abc";
            img.ImageUrl = e.Row.Cells[0].Text;
            e.Row.Cells[0].Controls.Add(img);

            Button btn = new Button();
            //btn.Text = "preview";
            e.Row.Cells[2].Controls.Add(btn);
            btn.CausesValidation = false;
            btn.Text = "View and Apply";
            if (Session.Count > 0)
            {
               
                
                    btn.PostBackUrl = "Apply_internship.aspx?InternshipID=" + e.Row.Cells[8].Text + "&CompanyID=" + e.Row.Cells[11].Text + "&Title=" + e.Row.Cells[12].Text + "&CompanyName=" + e.Row.Cells[13].Text + "";
            }
            
            else
            {

                btn.PostBackUrl = "Apply_login.aspx";
            }

        }

        

        protected void GridView2_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            GridView2.PageIndex = e.NewPageIndex;
            Recentinternship();
        }

       
       
    }
}