I am the new guy on WCF. These days, I'am learning that.
I made a empty solution, and this solution contains 4 projects: two c# libs, and two consoles as host and client. the programs ran well, but when client started after host, it raise this info in debug output window: "A first chance exception of type: System.IO.IOException occurred in mscorlib.dll"
But, the program looks well and get the right answer, so I want to know what this problem means.