Server Error in '/' Application.

Key cannot be null.
Parameter name: key

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentNullException: Key cannot be null.
Parameter name: key

Source Error:


Line 152:
Line 153:	templateBuilder.Append("\r\n                </div>\r\n                <!-- 代码 结束 -->\r\n            </div>\r\n            <div class=\"searchbox-in\">\r\n                <a href=\"/webaspx/search.aspx\" target=\"_blank\">\r\n                    <img src=\"/templates/main/images/pic10.png\" />\r\n                </a>\r\n            </div>\r\n        </div>\r\n        <div class=\"liebiao-r right\">\r\n            <div class=\"wherebox\">\r\n                ");
Line 154:	string category_nav = get_category_menu(category_id);
Line 155:
Line 156:	templateBuilder.Append("\r\n					<span>当前位置:<a href=\"/index.aspx\" title=\"\">首页</a>");

Source File: c:\webhosting\data\aspx\main\news.aspx    Line: 154

Stack Trace:


[ArgumentNullException: Key cannot be null.
Parameter name: key]
   System.Collections.Hashtable.get_Item(Object key) +12947056
   DTcms.Web.UI.BasePage.linkurl(String _key, Object[] _params) in d:\221工作区\网站、电子商务产品\通伊欧网站\src\DTcms.Web.UI\BasePage.cs:65
   DTcms.Web.UI.BasePage.LoopChannelMenu(StringBuilder strTxt, String urlKey, Int32 category_id) in d:\221工作区\网站、电子商务产品\通伊欧网站\src\DTcms.Web.UI\Label\category.cs:98
   DTcms.Web.UI.BasePage.LoopChannelMenu(StringBuilder strTxt, String urlKey, Int32 category_id) in d:\221工作区\网站、电子商务产品\通伊欧网站\src\DTcms.Web.UI\Label\category.cs:90
   DTcms.Web.UI.BasePage.get_category_menu(Int32 category_id) in d:\221工作区\网站、电子商务产品\通伊欧网站\src\DTcms.Web.UI\Label\category.cs:156
   ASP.aspx_main_news_aspx.OnInit(EventArgs e) in c:\webhosting\data\aspx\main\news.aspx:154
   System.Web.UI.Control.InitRecursive(Control namingContainer) +142
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +416


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0