How can a self-hosted (WinForm ) WCF service interact with the main form?

Question

Simplified version of what I\'m trying to achieve:

• I have a WinForms app that runs hidden (Visible = false) in the background.
• It\'s got only one Form

Answer 1

Can you use a singleton for your service? If so you could implement it like this:

[ServiceContract]
[ServiceBehavior(InstanceContextMode=InstanceContextMode.Single)]
public class MyClass : IMyClass
{
    Form1 _f;
    public MyClass(Form1 f)
    {
        _f = f;
    }

    [OperationContract]
    public void Alert(string mess)
    {
        _f.Text = mess;
    }
}

Then when you setup your service host, you instantiate it and pass it the form:

MyClass c = new MyClass(this);
string baseAddress = "http://localhost:12345/Serv";
var host = new ServiceHost(c, new Uri(baseAddress));