How to call a nonstatic task in a statick method without using class

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1.00/5 (2 votes)

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Hi guys,

i wonder if is there any solution to call a non static task in static method for example this is my non static task

C#

public async Task login(string user, string password)
        {

        }

and this is my static method

C#

public static void checker(string email, string password)
       {
           while (true)
           {
               login(email, password);
           }
       }

but it can't be called and i don't want to use classes for them.

What I have tried:

..................................................

Posted 5-Dec-23 1:48am

Ashkan X

Updated 6-Dec-23 21:49pm

KarstenK

v3

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Richard MacCutchan 5-Dec-23 7:51am

You have tagged your question C++, C#, Python, so which is it?

Ashkan X 5-Dec-23 8:05am

yes that was a mistake sorry it's C#

Richard MacCutchan 5-Dec-23 8:15am

Well you cannot do it, since every non-static method or property can only be accessed through its owning object.

CPallini 5-Dec-23 9:13am

While you cannot, depending on your actual scenario there could be a workaround (for instance you can pass to the static method, the instance of the class).

Maciej Los 5-Dec-23 11:10am

:thumbsup:

CPallini 7-Dec-23 13:03pm

Thanks!

Dave Kreskowiak 5-Dec-23 12:13pm

There is no such thing as "without a class" in C#. EVERYTHING is in a class somewhere, be it static or instance.

If you're saying you don't want to create an instance of a class to get to an instance (non-static) method of the class, there is no such thing. Instance members ALWAYS require an instance of the containing class to get to them.

If you want to be able to call a method without creating an instance, the method has to be marked static. This will allow you to call the method without an instance of the class, but the method will NOT be able to get to any data in the class unless it is also marked static.

You need to describe what you are ultimately trying to do with this code. What problem are you trying to solve. That does NOT mean "call an instance method without an instance!" You're trying to write code to accomplish something, so what is that something?

[no name] 5-Dec-23 13:40pm

You can create static references to none static objects or methods. Assign "this" to a static (e.g. .Current) in the constructor of the object (e.g. A) that has the non static method (e.g. Task) that you want to run; then: A.Current.Task();

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KarstenK · Answer 1 · 2023-12-06T21:56:00

Solution 1

You can do it by using some global object or some local object in the static method.

But as I read C# can also start a thread on an instance method. Read the Microsoft documentation.

PS: by answering your question, I learned a bit :-)

Posted 6-Dec-23 21:56pm

KarstenK

Bruno van Dooren · Answer 2 · 2023-12-09T06:12:00

No. Not directly.
A non static member always needs an object instance to work with because it is implied that it can touch instance data. and that would be impossible without the object reference.

It works in the example provided by KarstenK because the member method is wrapped in a delegate.
Which is what you could do: pass delegates.
But you'd still have to pass them somehow you cannot just 'call' a random instance method without making a delegate. Unless you use a global object.

But honestly, in cases like this, your problems are a sign that you are trying to fix the wrong problem. It is probably a sign that your 'login' method should not be an instance method. Or if it really needs to be, you should should not try to avoid using the instance.

How to call a nonstatic task in a statick method without using class

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