Slide content with Repeater control

<asp:updatepanel id="UpdatePanel1" runat="server" updatemode="Conditional" xmlns:asp="#unknown">
        <contenttemplate>
    
    <asp:hyperlink id="linkPrev" runat="server"><< </asp:hyperlink>
    <asp:hyperlink id="linkNext" runat="server"> >></asp:hyperlink>
    
            <asp:repeater id="Repeater1" runat="server">
                <itemtemplate>
                    <%#DataBinder.Eval(Container.DataItem, "date")%><br />
                    Title:<br />
                    <%#DataBinder.Eval(Container.DataItem, "title")%>
                    <asp:hyperlink id="lnkDetails" runat="server" navigateurl="<%# Eval("item_ID", "~/Details.aspx?ID={0}") %>">more</asp:hyperlink>
                   
                    <br />
                    <br />
                    <hr width="100px" />
                    <br />
                </itemtemplate>
            </asp:repeater>
            </contenttemplate>

</asp:updatepanel>

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            Dim strsql As String = "SELECT  * FROM news ORDER BY news.item_ID DESC"
            Dim sqlconn As New SqlConnection

            sqlconn.ConnectionString = ConfigurationManager.ConnectionStrings("mycon").ToString
            sqlconn.Open()
            Dim cmd As New SqlCommand(strsql, sqlconn)

            Dim da As New SqlDataAdapter(strsql, sqlconn)
            Dim table As New DataTable()
            da.Fill(table)

            Dim pds As New PagedDataSource()
            pds.DataSource = table.DefaultView
            pds.AllowPaging = True
            pds.PageSize = 5

            Dim currentPage As Integer

            If Request.QueryString("page") IsNot Nothing Then
                currentPage = Int32.Parse(Request.QueryString("page"))
            Else
                currentPage = 1
            End If

            pds.CurrentPageIndex = currentPage - 1


            If Not pds.IsFirstPage Then

                linkPrev.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" & (currentPage - 1)
            End If

            If Not pds.IsLastPage Then
                linkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?page=" & (currentPage + 1)
            End If

            Repeater1.DataSource = pds
            Repeater1.DataBind()

            cmd.Connection.Close()
            cmd.Connection.Dispose()
        End If
    End Sub

<asp:updatepanel id="UpdatePanel1" runat="server" xmlns:asp="#unknown">
                                        <contenttemplate>
                                            <asp:linkbutton id="btnPrev" runat="server" onclick="btnPrev_Click">PrevButton</asp:linkbutton>
                                           <asp:textbox id="txtHidden" style="width: 28px" value="1" runat="server" />
                                            <asp:linkbutton id="btnNext" runat="server" onclick="btnNext_Click">NextButton</asp:linkbutton>
                                            <asp:repeater id="Repeater1" runat="server">
                                                <itemtemplate>
                                                    <div class="latnewstitle">
                                                        Date:</div>
                                                    <%#DataBinder.Eval(Container.DataItem, "date")%><br />
                                                    <div class="latnewstitle">
                                                        Title:</div>
                                                    <div class="latnewscontent">
                                                        <%#DataBinder.Eval(Container.DataItem, "title")%></div>
                                                    <asp:hyperlink id="lnkDetails" runat="server" navigateurl="<%# Eval("item_ID", "~/Details.aspx?ID={0}") %>">See Details</asp:hyperlink>
                                                   
                                                    <br />
                                                    <hr width="100px" />
                                                    <br />
                                                </itemtemplate>
                                            </asp:repeater>
                                            
                                            <br />
                                            <br />
                                        </contenttemplate>
                                    </asp:updatepanel> 

Public Property PgNum() As Integer
        Get
            If ViewState("PgNum") IsNot Nothing Then
                Return Convert.ToInt32(ViewState("PgNum"))
            Else
                Return 0
            End If
        End Get
        Set(value As Integer)
            ViewState("PgNum") = value

        End Set
    End Property

    Protected Sub Page_Init(sender As Object, e As System.EventArgs) Handles Me.Init
        bindrepeater()
    End Sub

    Protected Sub Page_Load(sender As Object, e As EventArgs)
        If Not Page.IsPostBack Then
            bindrepeater()
        End If
    End Sub
    Public Sub bindrepeater()
        Dim cnt As Integer
        Dim strsql As String = "SELECT  * FROM news ORDER BY news.item_ID DESC"
        Dim sqlconn As New SqlConnection
        sqlconn.ConnectionString = ConfigurationManager.ConnectionStrings("mycon").ToString
        sqlconn.Open()
        Dim cmd As New SqlCommand(strsql, sqlconn) 

        Dim da As New SqlDataAdapter(cmd)
        Dim ds As New DataSet
        da.Fill(ds)
        cnt = ds.Tables(0).Rows.Count
       
        Dim pds As New PagedDataSource()
        pds.DataSource = ds.Tables(0).DefaultView
        pds.AllowPaging = True
        pds.PageSize = 5
        pds.CurrentPageIndex = PgNum

        txtHidden.Text = PgNum
        Dim vcnt As Integer = cnt / pds.PageSize
        If PgNum < 1 Then
            btnPrev.Visible = False
        ElseIf PgNum > 0 Then
            btnPrev.Visible = True
        End If
        If PgNum = 1 Then
            btnPrev.Visible = False
        End If


        If PgNum = vcnt Then
            btnNext.Visible = False
        ElseIf PgNum < vcnt Then
            btnNext.Visible = True
        End If
        cmd.Connection.Close()
        cmd.Connection.Dispose()
        Repeater1.DataSource = pds
        Repeater1.DataBind()


    End Sub
    Protected Sub btnNext_Click(sender As Object, e As System.EventArgs) Handles btnNext.Click
        PgNum += 1
        bindrepeater()
    End Sub

    Protected Sub btnPrev_Click(sender As Object, e As System.EventArgs) Handles btnPrev.Click
        PgNum -= 1
        bindrepeater()
    End Sub