Make changes shown below in App.config or wcf.config file and use log viewer tool at C:\Program Files\Microsoft SDKs\Windows\v6.0\Bin\SvcTraceViewer.exe to check App_tracelog.svclog file.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.diagnostics>
<sources>
<source name="System.ServiceModel.MessageLogging" switchValue="Verbose,ActivityTracing">
<listeners>
<add type="System.Diagnostics.DefaultTraceListener" name="Default">
<filter type="" />
</add>
<add name="ServiceModelMessageLoggingListener">
<filter type="" />
</add>
</listeners>
</source>
<source name="System.ServiceModel" switchValue="Verbose,ActivityTracing" propagateActivity="true">
<listeners>
<add type="System.Diagnostics.DefaultTraceListener" name="Default">
<filter type="" />
</add>
<add name="ServiceModelTraceListener">
<filter type="" />
</add>
</listeners>
</source>
</sources>
<sharedListeners>
<add initializeData="C:\MyLog\App_messages.svclog"
type="System.Diagnostics.XmlWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
name="ServiceModelMessageLoggingListener" traceOutputOptions="Timestamp">
<filter type="" />
</add>
<add initializeData="C:\MyLog\App_tracelog.svclog"
type="System.Diagnostics.XmlWriterTraceListener, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
name="ServiceModelTraceListener" traceOutputOptions="Timestamp">
<filter type="" />
</add>
</sharedListeners>
<trace autoflush="true" />
</system.diagnostics>
<appSettings>
<add key="wcfServiceHostEndpoint" value="http://localhost:8000/MyAsm.IWcfServiceHost, MyAsm" />
</appSettings>
<system.serviceModel>
<diagnostics performanceCounters="All">
<messageLogging logEntireMessage="true" logMessagesAtServiceLevel="true"
maxSizeOfMessageToLog="10485760" />
</diagnostics>
</system.serviceModel>
</configuration>