[InvalidOperationException: ExecuteNonQuery 要求已打开且可用的 Connection。连接的当前状态为已关闭。]
System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +2523272
System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +110
System.Data.SqlClient.SqlCommand.ExecuteNonQuery() +198
db.q(String sql) in d:\web\官网\cogitosoft.com\cogitosoft.com\cogitosoft.com\www\App_Code\db.cs:47
html_news_item.Page_Load(Object sender, EventArgs e) in d:\web\官网\cogitosoft.com\cogitosoft.com\cogitosoft.com\www\html\news\item.aspx.cs:26
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
System.Web.UI.Control.OnLoad(EventArgs e) +95
System.Web.UI.Control.LoadRecursive() +59
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678
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