<asp:GridView ID="grwBook" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" AutoGenerateColumns="false" AllowPaging="true" DataKeyNames="ID" OnPageIndexChanging="grwBook_PageIndexChanging" PageSize="12">     <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />     <RowStyle BackColor="#EFF3FB" />     <EditRowStyle BackColor="#2461BF" />     <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />     <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />     <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />     <AlternatingRowStyle BackColor="White" />     <Columns>     <asp:BoundField DataField="ID" HeaderText = "ID" />     <asp:BoundField DataField="UserName" HeaderText="姓名">     <ItemStyle Width="60px" />     </asp:BoundField>     <asp:BoundField DataField="Comments" HeaderText="评论">     <ItemStyle width="500px"  />     </asp:BoundField>     <asp:BoundField DataField="Postdate" HeaderText="日期" />     <asp:HyperLinkField DataNavigateUrlFields="newsid" DataNavigateUrlFormatString="../news_zi.asp?id={0}" HeaderText="文章"  DataTextField="newsid" target="_blank" />     <asp:TemplateField HeaderText="操作" >         <ItemTemplate>         <asp:CheckBox runat="Server" ID="cbxId" />         </ItemTemplate>     </asp:TemplateField>     </Columns>     <PagerSettings Mode="NextPreviousFirstLast" FirstPageText="第一页" LastPageText="末页" NextPageText="下一页" PreviousPageText="上一页" /> </asp:GridView>

using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.OleDb; public partial class admin_book_admin : System.Web.UI.Page {          protected void Page_Load(object sender, EventArgs e)     {         //判断管理员是否已经登陆         admin.checkadmin();         btnDel.Attributes.Add("onclick", "return confirm('确定删除吗？')");         if (!Page.IsPostBack)         {             datainit();         }     }     protected void grwBook_PageIndexChanging(object sender, GridViewPageEventArgs e)     {         this.grwBook.PageIndex = e.NewPageIndex;         Session["curretnPage"] = e.NewPageIndex;         datainit();     }     //数据绑定     private void datainit()     {         DataSet ds = db.dataSet("select ID,UserName,Comments,Postdate,newsid from Feedback order by Postdate desc,newsid desc");         if (ViewState["currentPage"] != null)         {             this.grwBook.PageIndex = Convert.ToInt32(Session["currentPage"]);         }         this.grwBook.DataSource = ds;         this.grwBook.DataBind();     }     //执行删除操作     protected void btnDel_Click(object sender, EventArgs e)     {         string sqlText = "(";         for (int i = 0; i < grwBook.Rows.Count; i++)         {             //搜索第n行3列             CheckBox cbx = (CheckBox)grwBook.Rows[i].FindControl("cbxId");             if (cbx.Checked == true)             {                sqlText = sqlText + Convert.ToInt32(grwBook.DataKeys[i].Value) + ",";             }         }         //判断是否有选中         if (sqlText != "(")         {             //去掉最后的逗号，并且加上右括号             sqlText = sqlText.Substring(0, sqlText.Length - 1) + ")";             sqlText = "delete from Feedback where ID in" + sqlText;             try             {                 //执行删除语句                 db.excuteSql(sqlText);                 //重新绑定数据                 common.salert("删除成功");                 datainit();                 //Response.Redirect("book_admin.aspx");             }             catch (Exception ex)             {                 //若有错误发生，输出错误信息                 common.salert(ex.Message);             }             finally             {             }         }         else         {             common.salert("您还没有选中有删除的项");         }     } }