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c#lambdaanonymous-methods

Cannot use 'this' in member initializer?

Is this legal? Does it contain a hidden bug or flaw? Visual studio does not give any errors or warnings but ReSharper does:

/// <summary>
/// immutable tuple for two
/// </summary>
public class Pair<TValue1, TValue2> : Singleton<TValue1>
{
    public TValue2 Value2 { get; private set; }
    public Pair(TValue1 value1, TValue2 value2, Func<Pair<TValue1, TValue2>, String> toStringFunc)
        : this(value1, value2, () => toStringFunc(this)) { } //Red light

}2> : Singleton<TValue1>
Solution

  • I'm pretty sure I've heard that this is a compiler bug, fixed in the next release. I'm just firing up my 4.0 VM, with a simpler test-case:

    class Foo {
    public Foo() : this(delegate { this.Bar(); }) { }
    public Foo(Action foo) {}
    public void Bar() {}
}

    works in VS2008, but in VS2010:

    Error 1 Keyword 'this' is not available in the current context