asp.net Datalist控件实现分页功能

<asp:DataList ID="DataList1" runat="server" Width="976px" Height="745px" BorderWidth="2px" CellPadding="2" CellSpacing="2" RepeatColumns="7" RepeatDirection="Vertical" BorderColor="#666666">
<ItemTemplate >
<table >
<tr>
<td >
<a href='<%#"Show.aspx?iname="+Eval("iname")%>'><img src='upimage/<%#DataBinder.Eval(Container.DataItem,"iname") %>' width="120" alt="点击查看大图"/></a>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList><asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:S601ConnectionString %>" SelectCommand="SELECT [iname] FROM [Image]" ></asp:SqlDataSource>
<table style="width: 976px" cellpadding="0" cellspacing="0">
<tr>
<td style="width:976px; text-align: right; font-size:12pt; height:25px;">
<asp:Label ID="Label7" runat="server" Text="当前页码为："></asp:Label>
[
<asp:Label ID="labPage" runat="server" Text="1"></asp:Label>
]
<asp:Label ID="Label6" runat="server" Text="总页码为："></asp:Label>
[
<asp:Label ID="labBackPage" runat="server"></asp:Label>
]<asp:LinkButton ID="lnkbtnOne" runat="server" Font-Underline="False" ForeColor="Red"
OnClick="lnkbtnOne_Click">第一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnUp" runat="server" Font-Underline="False" ForeColor="Red"
OnClick="lnkbtnUp_Click">上一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnNext" runat="server" Font-Underline="False" ForeColor="Red"
OnClick="lnkbtnNext_Click">下一页</asp:LinkButton>
<asp:LinkButton ID="lnkbtnBack" runat="server" Font-Underline="False" ForeColor="Red"
OnClick="lnkbtnBack_Click">最后一页</asp:LinkButton> </td>
</tr>
</table>

protected void Page_Load(object sender, EventArgs e)
{
dlBind();
}
public void dlBind()
{
SqlConnection sqlcon;
string strCon = "Data Source=(local);Database=S601;Uid=sa;Pwd=123456";
int curpage = Convert.ToInt32(this.labPage.Text);
PagedDataSource ps = new PagedDataSource();
sqlcon = new SqlConnection(strCon);
sqlcon.Open();
string sqlstr = "SELECT [iname],iid FROM [Image]";
SqlDataAdapter MyAdapter = new SqlDataAdapter(sqlstr, sqlcon);
DataSet ds = new DataSet();
MyAdapter.Fill(ds, "iid");
ps.DataSource = ds.Tables["iid"].DefaultView;
ps.AllowPaging = true; //是否可以分页
ps.PageSize = 35; //显示的数量
ps.CurrentPageIndex = curpage - 1; //取得当前页的页码
this.lnkbtnUp.Enabled = true;
this.lnkbtnNext.Enabled = true;
this.lnkbtnBack.Enabled = true;
this.lnkbtnOne.Enabled = true;
if (curpage == 1)
{
this.lnkbtnOne.Enabled = false;//不显示第一页按钮
this.lnkbtnUp.Enabled = false;//不显示上一页按钮
}
if (curpage == ps.PageCount)
{
this.lnkbtnNext.Enabled = false;//不显示下一页
this.lnkbtnBack.Enabled = false;//不显示最后一页
}
this.labBackPage.Text = Convert.ToString(ps.PageCount);
this.DataList1.DataSource = ps;
this.DataList1.DataKeyField = "iid";
this.DataList1.DataBind();
sqlcon.Close();
}
protected void lnkbtnOne_Click(object sender, EventArgs e)
{
this.labPage.Text = "1";
this.dlBind();
}
protected void lnkbtnUp_Click(object sender, EventArgs e)
{
this.labPage.Text = Convert.ToString(Convert.ToInt32(this.labPage.Text) - 1);
this.dlBind();
}
protected void lnkbtnNext_Click(object sender, EventArgs e)
{
this.labPage.Text = Conve