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Editorial Team
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Asked: 2026-06-11T15:48:18+00:00

In class Employee I’ve got some methods, which work fine. Now I wanted to

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In class Employee I’ve got some methods, which work fine. Now I wanted to add new method, for example

public void ExampleMethod()
{         
}

Then I call it

Employee employee = new Employee();
employee.ExampleMethod();

ExampleMethod is present in IntelliSense displayed after dot, when I hit F12 it also redirect me to that method, but while starting project I’ve got an error: ‘Employee’ does not contain a definition for ‘ExampleMethod’ and no extension method ‘ExampleMethod’ accepting a first argument of type ‘Employee’ could be found (are you missing a using directive or an assembly reference?)

I don’t know why this error is caused, because all other earlier methods work fine. What’s the problem?

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1 Answer

  1. Editorial Team

    There are three possibilities:

    1. If you are referring an old DLL then it can’t be used. So you have to refer to a new DLL.

    2. If you are using it in a different namespace and trying to use the other namespace’s dll then it won’t refer to this method.

    3. You may need to rebuild the project.

    I think third option might be the cause for you. Please post more information in order to understand exact problem of yours.

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