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[Communication] The difference between C# Linq First and FirstOrDefault

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Posted on 1/31/2019 3:06:31 PM | | |
Enumerable.First method

Returns the first element in the sequence.

Enumerable.FirstOrDefault method

Returns the first element in the sequence; If no elements are included in the sequence, the default value is returned.



Note: When using it, if it returns an object, it is recommended to use FirstOrDefault and perform a negative operation on the returned object







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