“/”应用程序中的服务器错误。

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行 48:             <asp:Repeater ID="repType" runat="server">
行 49:               <ItemTemplate>
行 50: 				<li <%#modelT.ClassID == Convert.ToInt64(Eval("ClassID")) ? " class=\"current\"" : ""%>>
行 51: 					<a class="daoa1" href="../news/default.aspx?ClassID=<%#Eval("ClassID") %>"><%#Eval("ClassName") %></a>
行 52: 				</li>

[NullReferenceException: 未将对象引用设置到对象的实例。]
   ASP.news_default_aspx.__DataBind__control12(Object sender, EventArgs e) in f:\usr\localuser\qyw2080250001\news\default.aspx:50
   System.Web.UI.Control.OnDataBinding(EventArgs e) +92
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +85
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +187
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +94
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.WebControls.Repeater.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem) +126
   System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +9517659
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +61
   System.Web.UI.WebControls.Repeater.DataBind() +50
   _Default.Page_Load(Object sender, EventArgs e) in f:\usr\localuser\qyw2080250001\news\default.aspx.cs:31
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +92
   System.Web.UI.Control.LoadRecursive() +54
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +772