private static void _SignalFirstInstance(string channelName, IList <string> args)
{
var secondInstanceChannel = new IpcClientChannel();
ChannelServices.RegisterChannel(secondInstanceChannel, true);
string remotingServiceUrl = "ipc://" + channelName + "/" + _RemoteServiceName;
// Obtain a reference to the remoting service exposed by the first instance of the application
var firstInstanceRemoteServiceReference = (_IpcRemoteService)RemotingServices.Connect(typeof(_IpcRemoteService), remotingServiceUrl);
// Pass along the current arguments to the first instance if it's up and accepting requests.
if (firstInstanceRemoteServiceReference != null)
{
// Allow the first instance to give itself user focus.
// This could be done with ASFW_ANY if the IPC call is expensive.
int procId = firstInstanceRemoteServiceReference.GetProcessId();
NativeMethods.AllowSetForegroundWindow(procId);
firstInstanceRemoteServiceReference.InvokeFirstInstance(args);
}
}