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Compiler Error CS0720
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Compiler Error CS0720 

Error Message

'static class': cannot declare indexers in a static class

Indexers are not meaningful in static classes, since they can only be used with instances, and it is not possible to create instances of a static type.

Example

The following sample generates CS0720:

// CS0720.cs

public static class Test
{
    public int this[int index]  // CS0720
    {
        get { return 1; }
        set {}
    }

    static void Main() {}
}

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