How do I access to Plc (instance) from other classes.

[Mallowan]

hello, for example, there's known way (according to docs) to do that in MainWindow.

public Plc plc;
plc = new Plc(CpuType.S71200, "100.1.1.10", 0, 0);

Could anyone share an example, which shows access to Plc from other classes?

thank you in advance!

[MiroslavMikus]

Hey, the base idea should be to use Dependency Injection.

We are using Autofac. Here is the simplified version:

var builder = new ContainerBuilder();

builder.Register<Plc>(()=> new Plc(CpuType.S71200, "100.1.1.10", 0, 0));

var scope = builder.Build();

var yourService =  scope.Resolve<Service>();

Where the Service requests the Plc in the constructor:

public class Service
{
    public Service(Plc myPlc)
    {

    }
}

Let me know if you have still some problems :)

[Mallowan]

hi there, I will try to replicate that, then there will be questions definetely. Thanks!

[OOOOO1]

嘿，基本思路应该是使用依赖注入。

我们正在使用Autofac。这是简化版：

var builder = new ContainerBuilder();

builder.Register<Plc>(()=> new Plc(CpuType.S71200, "100.1.1.10", 0, 0));

var scope = builder.Build();

var yourService =  scope.Resolve<Service>();

当Service请求Plc在构造函数：

public class Service
{
    public Service(Plc myPlc)
    {

    }
}

让我知道您是否还有一些问题:)

您好，按照你说的，我尝试复制你的代码，结果出现 Error CS1593 Delegate 'Func<IComponentContext, Plc>' does not take 0 arguments

[MiroslavMikus]

Hey, I do speak just ENG / GER so maybe this answer will not be directly on point. Anyway, it looks like you are using a different version of Autofac. Pls try this:

builder.Register<Plc>(CONTEXT => new Plc(CpuType.S71200, "100.1.1.10", 0, 0));

A second fix could be to bump your Autofac dependency to at least 4.9.1

Best regards Miro