CODEWITHSUNDEEP
c#
lechnerio
lechnerio

Reputation: 980

Call class from another Project C#

I really need your help and to figure this out.

My Project:

AccessProjectMap -- MainClass.cs -- ErrorLog.cs (public) ThreadProjectMap -- StartThread.cs

I'd like to make StartThread my default project when the project starts. Now I need the ErrorLog.cs file in my ThreadProjectMap. I made a reference and I can actually say ErrorLog log = new ErrorLog(); which does also work. When I try to use the ErrorLog in MainClass.cs it's working too.

However I cannot use log inside the main or DoThreading function.

class StartThread {

    static string threadRefresh = ConfigurationManager.AppSettings.Get("refreshTime").ToString();

    Access ac = new Access();
    ErrorLog log = new ErrorLog();

    static void Main(String[] args) {
        log.LogMessageToFile("== Start Main() ==");
        Thread t = new Thread(new ThreadStart(DoThreading));
        t.Start();
        Console.Read();
    }

    static void DoThreading() {
        int refresh = 1;

        while (true) {

            Console.WriteLine("Test");
            log.LogMessageToFile("== Test - inside Thread ==");

            Thread.Sleep(1000);

        }

    }
}

Upvotes: 2

Views: 613

Answers (2)

Andreas Eriksson
Andreas Eriksson

Reputation: 548

The instance you create of ErrorLog on this line: 

ErrorLog log = new ErrorLog();

Is an instance variable. The Main and DoThreading methods are static.

You have two options: Either make the ErrorLog static as well, like so: 

static ErrorLog log = new ErrorLog();

Or, just instantiate it inside your static methods.

Upvotes: 2

Habib
Habib

Reputation: 223402

The issue is not because of different projects/namespaces, instead you are trying to access an instance member in a static method.

Make your log field static and it should compile fine. 

static ErrorLog log = new ErrorLog(); //Here, make it static

static void Main(String[] args) {
    log.LogMessageToFile("== Start Main() ==");
    Thread t = new Thread(new ThreadStart(DoThreading));
    t.Start();
    Console.Read();
}

Upvotes: 3

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