大家看看这段代码有没有问题？

Question

NameValueCollection systemConfiguration = new NameValueCollection();
NameValueCollection messageBookConfiguration = new NameValueCollection();
systemConfiguration = (NameValueCollection)ConfigurationSettings.GetConfig( "ApplicationConfiguration" );
messageBookConfiguration = (NameValueCollection)ConfigurationSettings.GetConfig( "MessageBookConfiguration" );
traceEnabled = true;
traceFile = systemConfiguration["SystemFramework.Tracing.TraceFile"];
traceLevel = TraceLevel.Verbose;
traceSwitchname = systemConfiguration["SystemFramework.Tracing.Switchname"];
traceSwitchDescription = systemConfiguration["SystemFramework.Tracing.SwitchDescription"];