更新

LogStudy.TraceLog.Next/DatabaseTraceListener.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Microsoft.Data.Sqlite;
+
+namespace LogStudy.TraceLog.Next
+{
+    public class DatabaseTraceListener : TraceListener
+    {
+
+
+        public override void Write(string? message)
+        {
+            
+        }
+
+        public override void WriteLine(string? message)
+        {
+            
+        }
+    }
+}

LogStudy.TraceLog.Next/LogStudy.TraceLog.Next.csproj

@@ -7,4 +7,8 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="7.0.0" />
+  </ItemGroup>
+
 </Project>

LogStudy.TraceLog.Next/Program.cs

@@ -8,17 +8,29 @@ namespace LogStudy.TraceLog.Next
         {
             Console.WriteLine("跟踪日志学习-进阶项目");
 
+            Test();
+
             DefaultTraceSource();
             DefaultTraceSourceWithLog();
             DefaultTraceSourceWithoutSourceLevels();
 
+            UseDelimitedTraceListener();
+
             Console.WriteLine("按回车键，退出程序！");
             Console.ReadLine();
         }
 
         static void Test()
         {
-            WeakReference s = new WeakReference(null);
+            TraceSource traceSource = new TraceSource("Test",SourceLevels.All);
+            traceSource.Listeners.Add(new ConsoleTraceListener());
+
+            var preMessaage = traceSource.Name + ": ";
+
+            traceSource.TraceData(TraceEventType.Verbose, 1, $"{preMessaage}================");
+            traceSource.TraceEvent(TraceEventType.Error, 1, $"{preMessaage}---------------");
+            traceSource.TraceInformation($"{preMessaage}++++++++++++++++++++++++++++++++++++++++++++++");
+            traceSource.TraceTransfer(2, $"{preMessaage}************", Guid.NewGuid());
         }
 
         /// <summary>
@@ -78,5 +90,72 @@ namespace LogStudy.TraceLog.Next
             //强制输出
             defaultTraceSource.Flush();
         }
+
+        /// <summary>
+        /// 使用默认TraceListener
+        /// </summary>
+        static void UseDefaultTraceListener()
+        {
+
+        }
+
+        /// <summary>
+        /// 使用 TextWriterTraceListener
+        /// </summary>
+        static void UseTextWriterTraceListener()
+        {
+
+        }
+
+        /// <summary>
+        /// 使用 ConsoleTraceListener
+        /// </summary>
+        static void UseConsoleTraceListener()
+        {
+
+        }
+
+        /// <summary>
+        /// 使用 DelimitedTraceListener
+        /// </summary>
+        static void UseDelimitedTraceListener()
+        {
+            var listener = new DelimitedListTraceListener("trace.csv")
+            {
+                //控制输出内容
+                TraceOutputOptions = TraceOptions.LogicalOperationStack|TraceOptions.DateTime|TraceOptions.Timestamp|TraceOptions.ProcessId|TraceOptions.ThreadId|TraceOptions.Callstack,
+                Delimiter= ",",
+            };
+
+
+            TraceSource traceSource = new TraceSource("UseDelimitedTraceListener", SourceLevels.All);
+            var listenerIndex = traceSource.Listeners.Add(listener);
+            traceSource.Listeners[listenerIndex].IndentLevel= 1;
+
+            var preMessaage = traceSource.Name + ": ";
+
+            traceSource.TraceData(TraceEventType.Verbose, 1, $"{preMessaage}================");
+            traceSource.TraceEvent(TraceEventType.Error, 1, $"{preMessaage}---------------");
+            traceSource.TraceInformation($"{preMessaage}++++++++++++++++++++++++++++++++++++++++++++++");
+            traceSource.TraceTransfer(2, $"{preMessaage}************", Guid.NewGuid());
+
+            traceSource.Flush();
+        }
+
+        /// <summary>
+        /// 使用 XmlTraceListener
+        /// </summary>
+        static void UseXmlTraceListener()
+        {
+
+        }
+
+        /// <summary>
+        /// 使用静态 Trace 类
+        /// </summary>
+        static void UseTarce()
+        { 
+            
+        }
     }
 }

LogStudy.TraceLog.Next/学习.md

@@ -695,6 +695,11 @@ public sealed class Trace
 除了这两个与缓冲输出有关的成员，Trace类型还定义了Close方法，它会调用TraceListener对象的同名方法来完成对资源的释放。
 它还有一个名为CorrelationManager的属性，它返回的CorrelationManager对象可以开启和关闭一个逻辑操作，已经在上面的演示实例中使用过这个对象。
 
+## 查看跟踪
++ 在各个 TraceListener 中，查看输出;
++ 还可以在“诊断工具”的事件中查看；
++ 还可以使用 IntelliTrace 独立收集器,不过使用相对繁琐;
+