Getting the name of the parameter passed into a method

Question

Duplicate: Determine the name of the variable used as a parameter to a method

Is there any way to retrieve the name of a parameter that was passed into a method e.g.

int someParameter = 1;
Method(someParameter);

public void Method(int parameter)
{
    // I want the name of 'parameter' which will be 'someParameter'.
}

May I ask why you want to know? There may be a better way to achieve what you want. — Binary Worrier, Apr 16 '09 at 08:46

score 6 · Answer 1 · answered Apr 16 '09 at 08:45

6

No. It's only the value which is passed in as the argument. All the method gets is the integer. The fact that the expression happened to be just evaluating a variable is unknown as far as your method is concerned.

answered Apr 16 '09 at 08:45

Jon Skeet

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Out of interest (I can see no non-WTF reason to actually do this), would changing the parameter to "ref" allow to do this? – Michael Stum Apr 05 '10 at 20:13
@Michael: Nope. At least, not without some really dodgy unsafe code which was able to test various *possible* variables, and find one which had the same storage location. That *might* be feasible, I'm not sure. – Jon Skeet Apr 05 '10 at 20:28

score 2 · Answer 2 · answered Apr 16 '09 at 08:45

2

No, there is no way.

This will be followed by a bunch of people showing weird lambda expression ways to change the call site and kinda get the name, but the short answer is no.

answered Apr 16 '09 at 08:45

Brian

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score 0 · Answer 3 · answered Apr 05 '10 at 20:06

The only way perhaps will be with annotations with run-time retention. But then, it will be the name of the annotation, not of the parameter itself. A parameter name is just a syntactic artifact of the language. It does not get carried over to the compiled result.

Getting the name of the parameter passed into a method

3 Answers3

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