System.Diagnostics.StackFrame.GetFrame(index) not found in mscorlib

Question

I created two console applications, both targeting v4.5.2 of the .NET framework.

class MyDisposable : IDisposable
{
    public void Dispose()
    {
        var callerName = new StackTrace().GetFrame(1)?.GetMethod()?.Name;

        Console.WriteLine($"Dispose called by {callerName}.");
    }
}

which run perfectly well.

In the other, I have the following, which are in effect the same.

return Disposable.Create(() =>
{
    var stackFrame = new StackFrame();
    var callingMethodBase = stackFrame.GetFrame(1)?.GetMethod();

    ...
});

But Visual Studio intellisense reports:

'StackFrame' does not contain a definition for 'GetFrame' and no extension method 'GetFrame' accepting a first argument of type 'StackFrame' could be found (are you missing a using directive or an assembly reference?)

When I Go to Definition on the StackFrames class, I see the method GetFrames is absent from the class declaration of the StackFrame class. Both the assembly versions for mscorlib are the same, ie v4.0.0.0.

Why is that?

Answer 1

In the first example you are using StackTrace , but in the second you are using StackFrame .

Stack Trace has the method GetFrame(), but Stack Frame doesn't.