asp:Repeater 使用备忘录

假设在Repeater中执行删除操作，有两种处理方式，第一种是使用<a>重新转回到本页，在url中添加参数。

第二种方式，是使用服务器控件，引发repeater的onitemcommand事件，这是一种服务器回发操作（IsPostBack=true),

类似于使用GridView时用deletecommand，但repeater要求必须使EnableViewState=true.

结合自定义分页控件(uercontrol)，倘若要求删除操作后仍然回到当前页，则分页控件必须通过url参数获得当前页等值。

第二种方式，可封装到uercontrol的内部用默认的viewstate处理

   <div id="d_officeright">
        <asp:Repeater ID="repInfos" runat="server" EnableViewState="true" OnItemCommand="repInfos_ItemCommand">
            <HeaderTemplate>
                <table>
                    <tr>
                        <th>
                            信息标题
                        </th>
                        <th>
                            发布日期
                        </th>
                        <th>
                            信息状态
                        </th>
                        <th>
                            操作
                        </th>
                        <th>
                            删除
                        </th>
                    </tr>
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
                    <td>
                        <%# Eval("title")%>
                    </td>
                    <td>
                        <%# DataBinder.Eval(Container.DataItem,"addTime","{0:yyyy-MM-dd}")%>
                    </td>
                    <td>
                        <%# ConvertStatusToZh(Eval("infoStatus").ToString())%>
                    </td>
                    <td>
                        <a href="GoViewInfo.aspx?id=<%# Eval("id").ToString()%>&infotype=<%# Eval("infotype").ToString()%>">
                            查看"<%# Eval("id").ToString()%>"</a>
                    </td>
                    <td>
                        <a href='<%# @"?action=delete&id="+Eval("id").ToString() +@"&infotype="+Eval("infotype").ToString() %>'
                            runat="server">删除</a>
                        <asp:LinkButton ID="lb1" runat="server" CommandName="Delete" CommandArgument='<%# Eval("id").ToString()+"|" + Eval("infotype").ToString()%>'>回发删除</asp:LinkButton>
                    </td>
                </tr>
            </ItemTemplate>
            <FooterTemplate>
                <tr>
                    <td>
                    </td>
                </tr>
                </table>
            </FooterTemplate>
        </asp:Repeater>
        <uc2:PageBar ID="PageBar1" runat="server" />
    </div>

    override protected void OnInit(EventArgs e)
    {
        //InitializeComponent();
        this.PageBar1.PageChangeEvent += new EventHandler(PageBar1_PageChangeEvent);

        this.PageBar1.PageSize = 2;

        base.OnInit(e);
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (WebBusiness.IsSessionTimeOut(this)) return;

        string action = Request.QueryString["action"];

        DoAction(action);


    }

    void PageBar1_PageChangeEvent(object sender, EventArgs e)
    {
        BoundData();
    }

    public string ConvertStatusToZh(string s)
    {

        switch (s)
        {
            case "0":
                return "<font color='green'>待审核</font>";
            case "1":
                return "使用中";
            case "2":
                return "<font color='gray'>已删除</font>";
            case "3":
                return "<font color='yellow'>已过期</font>";
            default:
                return "<font color='green'>待审核</font>";
        }

    }

    protected void DoAction(string action)
    {
        switch (action)
        {
            case "delete":
                DeleteItem(Request.QueryString["id"], Request.QueryString["infotype"]);
                BoundData();
                break;
            default:
                if (!Page.IsPostBack) BoundData();
                return;
        }
    }

    protected void BoundData()
    {
        int itemcount = 0;
        ICollection<LgInfo> c = LogisticInfo.GetInfoListByUser(Session["userid"].ToString(),
            this.PageBar1.PageIndex, this.PageBar1.PageSize, out itemcount);
        if (c != null)
        {
            this.repInfos.DataSource = c;
            this.repInfos.DataBind();
        }
        this.PageBar1.RecordCount = itemcount;

    }

    protected void DeleteItem(string id, string infotype)
    {
        string err;
        LgInfo c = new LgInfo();
        c.Id = int.Parse(id);
        c.InfoType = int.Parse(infotype);
        LogisticInfo.DeleteLgInfo(c, out err);
    }

    protected void repInfos_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        string cmd = e.CommandName;
        string parm=e.CommandArgument.ToString();
        if (cmd == "Delete")
        {
            DeleteItem(parm.Split('|')[0], parm.Split('|')[1]);
        }
        BoundData();
    }