DataList

4、完整例子:

<asp:DataList ID="MyDL" runat="server">
<ItemStyle BackColor=AliceBlue />

<HeaderTemplate>
<div>头部</div><div>
</HeaderTemplate>

<SelectedItemTemplate>
名称:<%#DataBinder.Eval(Container.DataItem,"PicName")%>
路径:<%#DataBinder.Eval(Container.DataItem,"PicUrl")%>
</SelectedItemTemplate>

<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%#DataBinder.Eval(Container.DataItem,"PicName")%>'></asp:TextBox>
<asp:Button ID="Button3" runat="server" Text="更新" CommandName="update" />
<asp:Button ID="Butto4" runat="server" Text="取消" CommandName="cancel" />
</EditItemTemplate>

<ItemTemplate>
<li>ID:<%#DataBinder.Eval(Container.DataItem,"PicID") %>
<asp:Button ID="Button2" runat="server" Text="修改" CommandName="edit" />
<asp:Button ID="Button1" runat="server" Text="删除" CommandName="delete" />
</li>
</ItemTemplate>

<FooterTemplate>
</div>
<div>底部</div>
</FooterTemplate>

</asp:DataList>
//================================================================================
CS文件，代码片段：

public class dida : System.Web.UI.Page
{
public SqlConnection myConn = new SqlConnection(ConfigurationSettings.AppSettings["ConnStr"]);
public Repeater MyRP = new Repeater();
public DataList MyDL = new DataList();
public Label MyLB;
public DataSet MyDS = new DataSet();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
MyData();
MyLB.Text = "第一次加载";
}
else
{

MyLB.Text = "回调时加载";
}
}

private void MyData()

{
SqlDataAdapter MyDa = new SqlDataAdapter("select top 5 * from picdata", myConn);
MyDa.Fill(this.MyDS, "MyTable");

MyDL.DataSource = MyDS.Tables["MyTable"];
MyDL.DataBind();
}


override protected void OnInit(EventArgs e)
{
InitializeComponent();
base.OnInit(e);
}


private void InitializeComponent()
{
this.MyDL.EditCommand += new DataListCommandEventHandler(this.MyDL_EditCommand);
this.MyDL.UpdateCommand += new DataListCommandEventHandler(this.MyDL_UpdateCommand);
this.MyDL.CancelCommand += new DataListCommandEventHandler(this.MyDL_CancelCommand);
this.MyDL.DeleteCommand +=new DataListCommandEventHandler(this.MyDL_DeleteCommand);
this.Load += new System.EventHandler(this.Page_Load);
}


private void MyDL_EditCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
MyDL.EditItemIndex = e.Item.ItemIndex;
MyDL.SelectedIndex = -1; //屏蔽已选的
MyData();
MyLB.Text = "修改";
}

private void MyDL_UpdateCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
MyDL.EditItemIndex = -1;//屏蔽
MyDL.SelectedIndex = e.Item.ItemIndex;//更新后,设置被更新项为 已选项!
MyData();
MyLB.Text = "更新";
}

private void MyDL_CancelCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
MyDL.EditItemIndex = -1;
MyDL.SelectedIndex = -1;
MyData();
MyLB.Text = "放弃更新";
}

private void MyDL_DeleteCommand(object source, System.Web.UI.WebControls.DataListCommandEventArgs e)
{
MyDL.EditItemIndex = -1;//屏蔽
MyData();
MyLB.Text = "删除";
}

}