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Home/ Questions/Q 8702095
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Editorial Team
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Editorial Team
Asked: June 13, 20262026-06-13T02:33:56+00:00 2026-06-13T02:33:56+00:00

I am using EF and when I use FirstOrDefault on a table I get

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I am using EF and when I use FirstOrDefault on a table I get an error saying that it is not supported. I am making the call over WCF. Is this the issue? Why is it not supported? Why must I do a

Where(...).FirstOrDefault();

instead of just

FirstOrDefault();
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  1. Editorial Team
    Editorial Team
    2026-06-13T02:33:57+00:00Added an answer on June 13, 2026 at 2:33 am

    You can do FirstOrDefault on an IEnumerable

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