GridView 编辑、更新、取消

//前台：

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

        onrowcancelingedit="GridView1_RowCancelingEdit" DataKeyNames="RollMessageID" 

        onrowediting="GridView1_RowEditing" onrowupdating="GridView1_RowUpdating">

        <Columns>

            <asp:BoundField DataField="RollMessageID" HeaderText="编号" Visible="False" />

            <asp:BoundField DataField="Heading" HeaderText="姓名" />

            <asp:CommandField ShowEditButton="True" />

        </Columns>

    </asp:GridView>

//后台：

         protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                BindDataInfo();

            }

        }

//绑定数据

        protected void BindDataInfo()

        {

            RollMessageBusiness rm = new RollMessageBusiness();

            GridView1.DataSource = rm.GetAllRollMessage();

            GridView1.DataBind();

        }

//编辑按钮

        protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

        {

            GridView1.EditIndex = e.NewEditIndex;

            BindDataInfo();

        }

//更新按钮

        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)

        {

            string id = GridView1.DataKeys[e.RowIndex].Value.ToString();

            string strhead = ((TextBox)GridView1.Rows[e.RowIndex].Cells[1].Controls[0]).Text;

            RollMessageBusiness rmb = new RollMessageBusiness();

            rmb.UpdateRollMessage(id, strhead);

            GridView1.EditIndex = -1;

            BindDataInfo();

        }

//取消按钮

        protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)

        {

            GridView1.EditIndex = -1;

            BindDataInfo();

        }