“/”应用程序中的服务器错误。

指定的转换无效。

说明: 执行当前 Web 请求期间,出现未处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.InvalidCastException: 指定的转换无效。

源错误:


行 60:         string sitKey = "";
行 61:         string sitDes = "";
行 62:         var site = (from a in dl.nav where a.Id == 2 select a).First();
行 63:          sitTitle = site.titles;
行 64:          sitKey = site.keys;

源文件: d:\zkeys\www\host1c1uc8v\wwwroot\App_Code\webinfo.cs    行: 62

堆栈跟踪:


[InvalidCastException: 指定的转换无效。]
   System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +847
   System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +113
   System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +344
   System.Data.Linq.DataQuery`1.System.Linq.IQueryProvider.Execute(Expression expression) +49
   System.Linq.Queryable.First(IQueryable`1 source) +269
   webinfo.siteweb(String title, String key, String des) in d:\zkeys\www\host1c1uc8v\wwwroot\App_Code\webinfo.cs:62
   ASP.fuwu_show_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\zkeys\www\host1c1uc8v\wwwroot\fuwu\show.aspx:13
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +256
   System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
   System.Web.UI.Page.Render(HtmlTextWriter writer) +29
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
   System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266


版本信息: Microsoft .NET Framework 版本:2.0.50727.8762; ASP.NET 版本:2.0.50727.8762