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郭岩老师作品入选设计学智库“抗击病毒”优秀设计作品展

发布者: [发表时间]:2020-07-10 [来源]: [浏览次数]:

[InvalidOperationException: 已有打开的与此 Command 相关联的 DataReader,必须首先将它关闭。]

System.Data.SqlClient.SqlInternalConnectionTds.ValidateConnectionForExecute(SqlCommand command) +1651597

System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) +89

System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +268

System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +118

System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +64

System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +161

System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41

System.Data.Common.DbCommand.ExecuteReader() +14

System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +1290

System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +118

System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +342

System.Data.Linq.Table`1.GetEnumerator() +41

System.Data.Linq.Table`1.System.Collections.Generic.IEnumerable.GetEnumerator() +9

System.Linq.WhereEnumerableIterator`1.MoveNext() +146

System.Linq.d__25`1.MoveNext() +125

System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +387

System.Linq.Enumerable.ToList(IEnumerable`1 source) +58

ASP.templates_art_left_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\wwwroot\Teachers\web.xzygz.cn\Web\Templates\Art\Left.ascx:93

System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +268

System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +13

System.Web.UI.Control.Render(HtmlTextWriter writer) +12

System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66

System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100

System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25

System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +128

System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +13

System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer) +53

System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +66

System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +100

System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25

System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1303