下面分别看一下这三个子类的用法。
EventLogTraceListener类:
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EventLogTraceListener ELTL = new EventLogTraceListener();
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ELTL.EventLog = new EventLog ("日志名",".","来源");
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ELTL.TraceEvent(new TraceEventCache(), "来源", TraceEventType.Error, 100, "EventLogTraceListener");
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把日志写到系统的日志中,其中 EventLog el = new EventLog("日志名", ".", "来源")的参数“日志名”为系统日志中“应用程序和服务日志”的一个子节点,“.”代表本机下写日志,“来源”是日志项的来源属性的值。
DefaultTraceListener类:
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DefaultTraceListener DTL = new DefaultTraceListener();
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DTL.LogFileName = "F:""Default.log";
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DTL.TraceEvent(new TraceEventCache(), "来源", TraceEventType.Information, 1, "DefaultTraceListener");
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这是向本地文件下写一个文件,文件内容与EventLogTraceListener类的日志文件相似。
TextWriterTraceListener类:
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TextWriterTraceListener TWTL = new TextWriterTraceListener("F:"" TextWriter.log");
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TWTL.TraceEvent(new TraceEventCache(), "来源", TraceEventType.Information, 1, "TextWriterTraceListener");
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TWTL.Flush();
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这是向本地文件下写一个文件,文件内容与EventLogTraceListener类的日志文件相似。同时TextWriterTraceListener把跟踪或调试的内空显示到程序中,例子见上篇文章