CODEWITHSUNDEEP
c#
DanielVest
DanielVest

Reputation: 823

Why im getting an error on IEnumerator?

public void CheckFileType(string directoryPath)
        {
            IEnumerator files = Directory.GetFiles(directoryPath).GetEnumerator();
        }

The error: Error 1 Using the generic type 'System.Collections.Generic.IEnumerator' requires 1 type arguments

Upvotes: 0

Views: 260

Answers (3)

Servy
Servy

Reputation: 203802

The type you are referring to is generic, which means you need to supply a generic argument, like so:

IEnumerator<string> files = [...];

It so happens that there is a non-generic version of IEnumerator, but it's in the System.Collections namespace, not the System.Collections.Generic namespace. If you want to use the non-generic version (which you really shouldn't; you should use the generic version) you'll need to add a using for that namespace or use the fully qualified name.

Upvotes: 1

ChrisF
ChrisF

Reputation: 137108

You need to declare what type you're enumerating over:

IEnumerator<string> files = Directory.GetFiles(directoryPath).GetEnumerator();

If you're unsure of the type use var:

var files = Directory.GetFiles(directoryPath).GetEnumerator();

then the compiler will do all the hard work for you.

Upvotes: 4

Jordan Kaye
Jordan Kaye

Reputation: 2887

IEnumerator<T> is generic and requires a type, for example:

IEnumerator<string> files = Directory.GetFiles(directoryPath).GetEnumerator();

Upvotes: 2

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