Could not find xml file

I'm studing wcf. In my test project Service read data from xml file and then send it to client. Data is array of type "myClass".
Service class has a function

private XDocument GetDB()
        {
           
            string filePath = "SampleDB.xml"           
            return XDocument.Load(filePath);
        }

This function works when I run the service application. But when I call service from client it doesn't work.

The copy of xml file located in bin->debug folder. but when i run programm, I see exception like this "Could not find file 'C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\SampleDB.xml'."

How can I solve this?

Tags: WCF