Debugging in .NET[转]

//一段简单的例子
Trace.WriteLine( "字符串匹配查找成功！");

//直接使用WriteLineIf进行判断
Trace.WriteLineIf( IsShowTrace,"起始位置是：" + myIndex.ToString());

//使用if语句进行判断
if ( true == IsShowTrace )
{
	Trace.WriteLine( IsShowTrace,"起始位置是：" + myIndex.ToString());
}

// 演示如何使用Listener

using System;
using System.Diagnostics;

namespace Listener
{
    class Application
    {
        [STAThread]
        static void Main(string[] args)
        {
            Trace.WriteLine("Trace listener 测试");
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.diagnostics>
   <trace autoflush="true" indentsize="4">
      <listeners> 
         <remove type="System.Diagnostics.DefaultTraceListener"/> 
         <add name="myListener" type="System.Diagnostics.TextWriterTraceListener"
           initializeData="myListener.log" />
         <add name="myListenerEventLog" type="System.Diagnostics.EventLogTraceListener"
          initializeData="Application" />
      </listeners>
   </trace>
</system.diagnostics>
</configuration>

using System;
using System.Diagnostics;

namespace Switching
{
	class SampleClass
	{
		// 建立一个switch，其值由config文件进行配置
		static TraceSwitch generalSwitch = new TraceSwitch("CoolSwitch", "Global scope");

		static public void SampleMethod() 
		{
			//如果switch state设置为TraceError，输出该消息
			Trace.WriteLineIf(generalSwitch.TraceError,"TraceError message");
			
			//如果switch state设置为TraceWarning，输出该消息
			Trace.WriteLineIf(generalSwitch.TraceWarning,"TraceWarning message");
			
			//如果switch state设置为TraceInfo，输出该消息
			Trace.WriteLineIf(generalSwitch.TraceInfo,"TraceInfo message");
			
			//如果switch state设置为TraceVerbose，输出该消息
			Trace.WriteLineIf(generalSwitch.TraceVerbose,"TraceVerbose message");
		
		}

		public static void Main(string[] args) 
		{
			SampleMethod();
		}
	}
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.diagnostics>
   <switches>
      <add name="CoolSwitch" value="2" /> 
   </ switches >
</system.diagnostics>
</configuration>

TraceError message
TraceWarning message

public bool FindCustomer (int customerID)
{
	Debug.Assert (customerID > 0, "FindCustomer出错 ","customerID应该大于0"); 
	// More code...
	return true;
}

if ( SetCustomerValid(customerID))
{
	Debug.Assert(CustomerIsValid(customerID));
	UserCustomer(customerID);
}
else
{
	Debug.Assert( !CustomerIsValid(customerID));
	ReleaseCustomer(customerID);
}

[Conditional ("DEBUG")]
private void ImOK ()
{
	Debug.Assert (this != null,"测试对象状态", "this 不能为 null");
	// More here.
}

public bool SetCustomerValid (int customerID)
{
	ImOK ();
	Debug.Assert (customerID > 0, "FindCustomer出错 ","customerID应该大于0"); 
	// More code...
	return true; 
}