Repeater数据控件的两个重要事件ItemDataBound 和 ItemCommand

1   ItemDataBound：数据绑定的时候（正在进行时）发生。

2   ItemCommand ：用来响应Item模板中的控件的事件。

如下代码

aspx代码：
[html] view plain copy
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="LinqDataSource1"
        onitemcommand="Repeater1_ItemCommand"
        onitemdatabound="Repeater1_ItemDataBound">
    <ItemTemplate>
    <span runat="server" id="span">
    --------------------<asp:Button ID="addButon" CommandName="addButton" CommandArgument='<%#Eval("part_code") %>' runat="server" Text="库存+1" />-------------------<%#Eval("part_code") %>---------------<%#Eval("stock_num") %><br/><br/>
    </span>
    </ItemTemplate>
    </asp:Repeater>  

cs代码：
[csharp] view plain copy
//响应Item模板中控件的事件---------点击按钮，库存+1
       protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
       {
           if (e.CommandName == "addButton")//判断这个Item里哪个控件响应的这个事件
           {
               string part_code = (string)e.CommandArgument;//获取Item传过来的参数  

               //下面是通过Linq修改数据（即：使库存+1）
               DataClasses1DataContext dc = new DataClasses1DataContext();
               var rs = dc.tbl_stock_dtl.Select(r => r).Where(r => r.part_code == part_code);
               if (rs.Count() > 0)
               {
                   foreach (tbl_stock_dtl t in rs)
                   {
                       t.stock_num += 1;
                   }
               }
               dc.SubmitChanges();
               Repeater1.DataBind();//强行刷新数据，就是说，库存+1后，立马显示新的数据。  

           }
       }  

       //当浏览器显示一条记录的时候，响应的事件---------库存为零的背景变红
       protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
       {
           //判断Item的类型，因为Item有好几种：footer ，header ，Item....
           if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
           {
               //把ItemData转换为对应的类对象
               tbl_stock_dtl tsd = (tbl_stock_dtl)e.Item.DataItem;
               if (tsd.stock_num == 0)
               {
                   //找到对应的控件，因为span是html的，所以，要加上runat=“server”
                   HtmlGenericControl hgc = (HtmlGenericControl)e.Item.FindControl("span");  

                   //为span动态添加一个属性：style，该属性的值为：background-color:red
                   hgc.Attributes.Add("style", "background-color:red");
               }
           }
       }  

自己写的

前台：

  <asp:Repeater ID="rp_Item" runat="server" OnItemDataBound="rp_ItemDataBound">
                        <ItemTemplate>
                            <tr ondblclick="RowDbClick('');">
                                <td style="width: 3%; text-align: center;">
                                    <input type="checkbox" value="<%#Eval("Id")%>" name="checkbox" /></td>
                                <td style="text-align: center; width: 5%"><%=this.code++%></td>
                                <td style="width: 10%; text-align: center;"><%#Eval("Title") %></td>
                                <td style="width: 8%; text-align: center;"><%#Eval("AddUserName") %></td>
                                <td style="width: 20%; text-align: center;"><%#Eval("Remark") %></td>
                                <td style="width: 10%; text-align: center;">
                                    <%#Eval("AddTime")%>
                                </td>
                                <td style="width: 8%; text-align: center;"><%# GetStatusNameByStatus(Eval("Status").ToString()) %></td>
                                <td style="text-align: center; width: 8%;">
                                    <a href="SpecialRectificationCheck_Detail.aspx?key=<%#Eval("Id")%>" target="_blank" onclick="GetId(this)" class="details" id="<%#Eval("Id")%>">详情<img id="attachFlag" runat="server" style="width:12px;height:12px;display:none" src="../../Themes/Images/32/239.png"/></a>
                                </td>
                            </tr>
                        </ItemTemplate>

                        <FooterTemplate>
                            <% if (rp_Item != null)
                                {
                                    if (rp_Item.Items.Count == 0)
                                    {
                                        Response.Write("<tr><td colspan='8' style='color:red;text-align:center'>没有找到您要的相关数据！</td></tr>");
                                    }
                                } %>
                        </FooterTemplate>
                    </asp:Repeater>

后台 ：

 protected void rp_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                DataRowView drv=(DataRowView)e.Item.DataItem;
                string id = Convert.ToString(drv["Id"]);

                DataTable dtAttach = _keyWorkDao.GetAttachmentByKey(id);
                if(dtAttach!=null&&dtAttach.Rows.Count>)
                {
                    HtmlImage aAttachFlag = ((HtmlImage)e.Item.FindControl("attachFlag"));
                    aAttachFlag.Style["display"] = "normal";
                }
            }
        }

前台 2：

 <table class="grid tb-list-box" align="center" border="0" cellpadding="0" cellspacing="0">
                            <thead>
                                <tr>
                                    <th style="width: 5%">序号</th>
                                    <th style="width: 10%; text-align: center;">添加人
                                    </th>
                                    <th style="width: 10%; text-align: center;">上传时间
                                    </th>
                                    <th style="width:auto; text-align: center;">附件
                                    </th>
                                </tr>
                            </thead>
                            <asp:Repeater ID="RptAttach" runat="server" OnItemDataBound="rp_ItemDataBound">
                                <ItemTemplate>
                                    <tr>
                                        <td style="width: 5%; text-align: center;"><%=CodeListForAttach++ %></td>
                                        <td style="width: 10%; text-align: center;" runat="server" id="addUserName"><%#Eval("AddUserName")%></td>
                                        <td style="width: 20%; text-align: center;"><%#Eval("AddTime")%></td>
                                        <td style="width: auto; text-align: center; text-align:left" runat="server" id="fileNames"></td>
                                    </tr>
                                </ItemTemplate>
                            </asp:Repeater>
                        </table>

后台 2：

 protected void rp_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {
                Object o = e.Item.DataItem;
                Type t = o.GetType();
                System.Reflection.PropertyInfo pAddUserName = t.GetProperty("AddUserName", typeof(System.String));
                System.Reflection.PropertyInfo pAddTime = t.GetProperty("AddTime", typeof(System.DateTime));

                string addUserName =Convert.ToString( pAddUserName.GetValue(o));
                DataRow[] drs=dtAttach.Select(string.Format( "ADDUSERNAME='{0}'",addUserName));
                string template = "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a class=\"downLoad\" style=\"color: blue\" target=\"_blank\" href=\"/Ajax/UpLoadFile_Ajax.ashx?Method=DownLoad&fileName={0}&filePath={1}\">{0}</a>";
                StringBuilder sbAttachInfo = new StringBuilder();
                foreach (DataRow dr in drs)
                {
                    sbAttachInfo.AppendFormat(template, Convert.ToString(dr["FileName"]), Convert.ToString(dr["filePath"]));
                }
                HtmlTableCell htcFileNames = ((HtmlTableCell)e.Item.FindControl("fileNames"));
                htcFileNames.InnerHtml = sbAttachInfo.ToString();
            }
        }