/// <summary>
/// Creates a client channel and obtains a reference to the remoting service exposed by the server -
/// in this case, the remoting service exposed by the first instance. Calls a function of the remoting service
/// class to pass on command line arguments from the second instance to the first and cause it to activate itself.
/// </summary>
/// <param name="channelName">Application's IPC channel name.</param>
/// <param name="args">
/// Command line arguments for the second instance, passed to the first instance to take appropriate action.
/// </param>
private static void SignalFirstInstance(string channelName, IList <string> args)
{
IpcClientChannel secondInstanceChannel = new IpcClientChannel();
ChannelServices.RegisterChannel(secondInstanceChannel, true);
string remotingServiceUrl = IpcProtocol + channelName + "/" + RemoteServiceName;
// Obtain a reference to the remoting service exposed by the server i.e the first instance of the application
IPCRemoteService firstInstanceRemoteServiceReference = (IPCRemoteService)RemotingServices.Connect(typeof(IPCRemoteService), remotingServiceUrl);
// Check that the remote service exists, in some cases the first instance may not yet have created one, in which case
// the second instance should just exit
if (firstInstanceRemoteServiceReference != null)
{
// Invoke a method of the remote service exposed by the first instance passing on the command line
// arguments and causing the first instance to activate itself
try
{
firstInstanceRemoteServiceReference.InvokeFirstInstance(args);
}
catch (Exception)
{
// ignored
}
}
}
private static void SignalFirstInstance(string channelName, IList <string> args)
{
IpcClientChannel secondInstanceChannel = new IpcClientChannel();
ChannelServices.RegisterChannel(secondInstanceChannel, true);
string remotingServiceUrl = IpcProtocol + channelName + "/" + RemoteServiceName;
IPCRemoteService firstInstanceRemoteServiceReference = (IPCRemoteService)RemotingServices.Connect(typeof(IPCRemoteService), remotingServiceUrl);
firstInstanceRemoteServiceReference?.InvokeFirstInstance(args);
}
private static void SignalFirstInstance(string channelName, IList <string> args)
{
IpcClientChannel chnl = new IpcClientChannel();
ChannelServices.RegisterChannel(chnl, true);
string url = "ipc://" + channelName + "/SingleInstanceApplicationService";
IPCRemoteService service = (IPCRemoteService)RemotingServices.Connect(typeof(IPCRemoteService), url);
if (service != null)
{
service.InvokeFirstInstance(args);
}
}
