GridView分頁後不顯示頁碼【急】

控件的代碼:

<asp:GridView?ID="GridView1"?runat="server"?AutoGenerateColumns="False"?

CellPadding="4"?ForeColor="#333333"?GridLines="None"?

onpageindexchanging="GridView1_PageIndexChanging"?PageSize="1"?

AllowPaging="True">

.cs中的代碼

protected?void?SetBind()

{

DataSet?ds?=?new?DataSet();

string?sqlstr?=?"select?*?from?Topic";

SqlConnection?cnn?=?new?SqlConnection("Data?Source=06509;Initial?Catalog=Student;Integrated?Security=True");

SqlDataAdapter?da?=?new?SqlDataAdapter(sqlstr,?cnn);

cnn.Open();

da.Fill(ds);

GridView1.DataSource?=?ds;

GridView1.DataBind();

da.Dispose();

ds.Dispose();

cnn.Dispose();

}

protected?void?GridView1_PageIndexChanging(object?sender,?GridViewPageEventArgs?e)

{

GridView1.PageIndex=?e.NewPageIndex;

SetBind();

}

這是我的程序,可以通過的.