“/”应用程序中的服务器错误。

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[InvalidOperationException: Database is not open]
   () +250
   (CommandBehavior behavior) +16
   () +33
   PetaPoco.<>c.<ExecuteScalarHelper>b__159_0(IDbCommand c) +10
   (IDbCommand cmd, Func`2 executionFunction) +32
   (IDbCommand cmd) +96
   (CommandType commandType, String sql, Object[] args) +334
   (String sql, Object[] args) +41
   () +22
   (String content, Int32 id) +210
   (String content, Int32 id) +43
   () +2650

[TargetInvocationException: 调用的目标发生了异常。]
   (Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   (Object obj, Object[] parameters, Object[] arguments) +91
   (Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +105
   (Object obj, Object[] parameters) +21
   () +3127

[Exception: 在执行标签“<vt:function var="nlist" method="GetNews" type="$func" top="8" classid="10">”的方法时出错]
   () +3278
   (TextWriter writer) +72
   (TextWriter writer) +122
   (TextWriter writer) +213
   (TextWriter writer) +122
   (TextWriter writer) +393
   (TextWriter writer) +122
   (TextWriter writer) +213
   (TextWriter writer) +339
   (TextWriter writer) +122
   (TextWriter writer) +213
   (TextWriter writer) +339
   (TextWriter writer) +122
   () +60
   (VtPage vt, Int32 id) +49
   _(VtPage vt) +313
   __Load(Object sender, EventArgs e) +202
   (Object sender, EventArgs e) +52
   (EventArgs e) +97
   () +61
   (Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693