Telerik 调用控件中的控件

现有RadListView列表控件，控件中有嵌套了一个RadRating，页面布局如下：

代码如下：

                    <telerik:RadListView ID="RlvwCriticism" runat="server" AllowCustomPaging="true" ItemPlaceholderID="item" PageSize="8" AllowPaging="True" OnItemDataBound="RlvwCriticism_ItemDataBound" OnItemCommand="RlvwCriticism_ItemCommand" OnPageIndexChanged="RlvwCriticism_PageIndexChanged">
                        <EmptyDataTemplate>
                            <div style="text-align: center;">
                                <span style="color: #808080; text-decoration: none;">暂无评论！</span>
                            </div>
                        </EmptyDataTemplate>
                        <LayoutTemplate>
                            <table id="item" runat="server"></table>
                            <table>
                                <tr>
                                    <td>
                                        <telerik:RadDataPager ID="RdpgCriticism" runat="server" CssClass="CustomDataPager" BorderWidth="0" Skin="Metro" PagedControlID="RlvwCriticism" PageSize="8">
                                            <Fields>
                                                <telerik:RadDataPagerButtonField FieldType="FirstPrev" FirstButtonText="首页" PrevButtonText="上一页" />
                                                <telerik:RadDataPagerButtonField FieldType="Numeric" />
                                                <telerik:RadDataPagerButtonField FieldType="NextLast" LastButtonText="尾页" NextButtonText="下一页" />
                                            </Fields>
                                        </telerik:RadDataPager>
                                    </td>
                                </tr>
                            </table>
                        </LayoutTemplate>
                        <ItemTemplate>
                            <table width="720" border="0" align="center" style="color: #414141; border-bottom: 1px dotted #e5e5e5">
                                <tr>
                                    <td width="70" height="68" align="center" valign="middle">
                                        <img id="Img1" src='<%#Eval("HeadSculpturePath") %>' width="50" height="50" runat="server" /></td>
                                    <td colspan="2" valign="top" style="line-height: 18px;"><span style="float: left; color: #0095c6"><%# Eval("RealName")%>：</span><span style="float: left;"><%#Eval("CriticismContent")%></span></td>
                                </tr>
                                <tr>
                                    <td height="24" align="center">
                                        <telerik:RadButton ID="RbtnDelete" runat="server" Text="删除" Width="50" Skin="Metro" CommandName="Delete" CommandArgument='<%#Eval("CriticismID")%>'></telerik:RadButton>
                                    </td>
                                    <td width="517"><span style="float: left; line-height: 24px;">星级：</span><span style="float: left;"><telerik:RadRating ID="RrtReadGrade" runat="server" ReadOnly="True" Skin="Metro"></telerik:RadRating>
                                    </span></td>
                                    <td width="142"><%# Eval("CriticismTime")%></td>
                                </tr>
                            </table>
                        </ItemTemplate>
                    </telerik:RadListView>

在显示评价的时候需要显示星级，因此需要给每行都赋值，在ItemDataBound事件中写即可，给RadRating控件赋值方法如下：

 protected void RlvwCriticism_ItemDataBound(object sender, RadListViewItemEventArgs e)
      {
             //读取评价星级
            Telerik.Web.UI.RadRating rating = e.Item.FindControl("RrtReadGrade") as Telerik.Web.UI.RadRating; 
              //RrtReadGrade是前台RadRating控件ID，其他控件的读取方式类似，只需将 Telerik.Web.UI.RadRating改成对应控件即可 
             if (rating != null)
             {
                Telerik.Web.UI.RadListViewDataItem item = e.Item as Telerik.Web.UI.RadListViewDataItem;
                 if (item != null)
                {
                     DataRowView view = item.DataItem as DataRowView;
                     if (view != null)
                     {
                         int ratval = int.Parse(view["CriticismGrade"].ToString()); //将数据赋给控件
                         rating.Value = ratval;
                     }
                 }
          }         
   }