GridView 72般绝技之与Linq喜结连理 之2.GridView选中，编辑，取消，删除与3.GridView正反双向排序：

源码在此篇中贴出来。

园子里朋友的原文
http://blog.csdn.net/lipan2/archive/2008/09/14/2795707.aspx
2.GridView选中，编辑，取消，删除
  (1)设置GridView为可编辑，选择，删除的状态。然后绑定各自的事件

    <asp:GridView ID="gridViewCourse" runat="server" AutoGenerateColumns="False" 
        onrowcancelingedit="gridViewCourse_RowCancelingEdit" 
        onrowdeleting="gridViewCourse_RowDeleting" 
        onrowediting="gridViewCourse_RowEditing" 
        onrowupdating="gridViewCourse_RowUpdating" DataKeyNames="Sno">
        <Columns>
            <asp:BoundField DataField="Sno" HeaderText="学号" />
            <asp:BoundField DataField="Name" HeaderText="姓名" />
            <asp:BoundField DataField="Age" HeaderText="年龄" />
            <asp:BoundField DataField="BeginStudt" HeaderText="开学时间" />
            <asp:BoundField DataField="Road" HeaderText="路程" />
            <asp:CommandField HeaderText="选择" ShowSelectButton="True" />
            <asp:CommandField HeaderText="编辑" ShowEditButton="True" />
            <asp:CommandField HeaderText="删除" ShowDeleteButton="True" />
        </Columns>
    </asp:GridView>

(2)然后是各自的处理事件：这段代码写的不太好，因为功能还没有实现。

      #region GridView 事件

        protected void gridViewCourse_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            if (studentService == null) studentService = new StudentService();
            string deleteCno=this.gridViewCourse.DataKeys[e.RowIndex].Value.ToString();
            Student deleteItem = studentService.GetById(deleteCno);
            studentService.Delete(deleteItem);
            //this.gridViewCourse.DeleteRow(e.RowIndex);
            MessageBox.Show("删除成功");
            BindSource();
        }

        protected void gridViewCourse_RowEditing(object sender, GridViewEditEventArgs e)
        {
            if (studentService == null) studentService = new StudentService();
        }

        protected void gridViewCourse_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            if (studentService == null) studentService = new StudentService();
        }

        protected void gridViewCourse_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
        {
            if (studentService == null) studentService = new StudentService();
        }

        #endregion

        #region 绑定事件

        private void BindSource()
        {
            if (studentService == null) studentService = new StudentService();
            List<Student> courseList = studentService.FindAllList();
            this.gridViewCourse.DataSource = courseList;
            this.gridViewCourse.DataKeyNames = new string[] { "Sno" };
            this.gridViewCourse.DataBind();
        }

        #endregion

 3.GridView正反双向排序：
 设置GridView可排序，然后是要点击表头的链接才可以排序(AllowSorting="true")，所以选择排序的SortExpression；(SortExpression="Sno"/>)

          <asp:GridView ID="gridViewCourse" runat="server" AutoGenerateColumns="False" AllowSorting="true"
        DataKeyNames="Sno" onsorting="gridViewCourse_Sorting">
         <FooterStyle BackColor="White" ForeColor="#000066" />
        <Columns>
            <asp:BoundField DataField="Sno" HeaderText="学号" SortExpression="Sno"/>
            <asp:BoundField DataField="Name" HeaderText="姓名"  SortExpression="Name"/>
            <asp:BoundField DataField="Age" HeaderText="年龄" SortExpression="Age"/>
            <asp:BoundField DataField="BeginStudt" HeaderText="开学时间" SortExpression="BeginStudt" />
            <asp:BoundField DataField="Road" HeaderText="路程" SortExpression="Road"/>
        </Columns>
        <RowStyle ForeColor="#000066" />
        <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
        <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
        <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
    </asp:GridView>      

 用ViewState保存排序字段，和排序规则。

protected void gridViewCourse_Sorting(object sender, GridViewSortEventArgs e)
        {
            string sPage = e.SortExpression;
            if (ViewState["SortOrder"].ToString() == sPage)
            {
                if (ViewState["OrderDire"].ToString() == "DESC")
                    ViewState["OrderDire"] = "ASC";
                else
                    ViewState["OrderDire"] = "DESC";
            }
            else
            {
                ViewState["SortOrder"] = e.SortExpression;
            }
            Bind();
        }

        private void Bind()
        {
            if (studentService == null) studentService = new StudentService();
            List<Student> courseList = studentService.FindAllList((string)ViewState["SortOrder"], (string)ViewState["OrderDire"] );
            this.gridViewCourse.DataSource = courseList;
            this.gridViewCourse.DataKeyNames = new string[] { "Sno" };
            this.gridViewCourse.DataBind();
        }

代码：

/Files/csharponworking/LineToSqlSample.rar