WCF callback function, how to call function like event.




File list:
CallbackTest1
............\CallbackTest1
............\.............\bin
............\.............\...\Debug
............\.............\...\.....\CallbackTest1.vshost.exe
............\.............\...\.....\CallbackTest1.vshost.exe.manifest
............\.............\obj
............\.............\...\Debug
............\.............\...\.....\TempPE
............\.............\Properties
............\.............\..........\AssemblyInfo.cs
............\.............\CallbackTest1.csproj
............\.............\Program.cs
............\ServiceClient
............\.............\bin
............\.............\...\Debug
............\.............\...\.....\ServiceClient.vshost.exe
............\.............\...\.....\ServiceClient.vshost.exe.manifest
............\.............\obj
............\.............\...\Debug
............\.............\...\.....\TempPE
............\.............\Properties
............\.............\..........\AssemblyInfo.cs
............\.............\Service References
............\.............\Program.cs
............\.............\ServiceClient.csproj
............\serviceserver
............\.............\bin
............\.............\...\Debug
............\.............\...\.....\serviceserver.vshost.exe
............\.............\...\.....\serviceserver.vshost.exe.manifest
............\.............\obj
............\.............\...\Debug
............\.............\...\.....\TempPE
............\.............\...\.....\serviceserver.csproj.FileListAbsolute.txt
............\.............\Properties
............\.............\..........\AssemblyInfo.cs
............\.............\Program.cs
............\.............\serviceserver.csproj
............\CallbackTest1.sln
............\CallbackTest1.suo