C# linq null question

Question

Could someone explain me how can this be possible:

foreach (var pair in Expected.Zip(
         Actual, (x, y) => new { Expected = x, Actual = y }))
{
    // No match for a 'null' series.
    if (pair.Actual == null) yield return 0;

    var actualPaths = pair.Actual.Images.Select(x => x.Path).ToList();
}

This code (in Microsoft Visual Studio 2008) stops on line var actualPaths = ... and says that pair.Actual equals null, therefore raising a NullReferenceException.

How is this even possible? Am I missing something?

How does it say that pair.Actual is null?

Gabe
– Gabe

2011-03-31 01:59:32 +00:00
Commented Mar 31, 2011 at 1:59 — Gabe
– Gabe, Commented Mar 31, 2011 at 1:59

SLaks · Accepted Answer · 2011-03-31 01:58:48Z

8

After your if, the rest of the code keeps running.

You need to add continue;, or put the rest of the code in an else block.

answered Mar 31, 2011 at 1:58

SLaks

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