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public class PJ3BLL
{
[DllImport("HG_Interface.dll", EntryPoint = "newinterface", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public extern static long newinterface();
}
[WebMethod]
public string HelloWorld()
{
PJ3BLL.newinterface();
}