Fixed CsvOutputFormatter bug where a return type was not IEnumerable<T> but is …#204
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…not itself generic (or perhaps not [generic]<T>) would fail when UseSingleLineHeaderInCsv was true.
damienbod
previously approved these changes
Apr 10, 2020
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@preeder Just want to test and validate this |
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Fixed bug where a return type which implements IEnumerable but is not itself generic (or perhaps not [generic]) would fail when UseSingleLineHeaderInCsv was true.
This happened to me in .NET Core 3.1 using the pretty simple controller method:
[HttpGet]
[Produces("text/csv")]
public IEnumerable Get(string id)
Perhaps this was caused by how "yield return" is handled by the compiler. I would have looked into that further, except that it was a flaw and fixing the flaw is more important.