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EnumTypeModelBinder does not handle enum flags correctly
See original GitHub issueDescribe the bug
When binding an flag enum type to checkbox lists, only the first checked box gets picked up.
Expected behavior
When multiple checkboxes are checked, the bound model property should reflect selections.
Additional context
The implementation for EnumTypeModelBinder derives from SimpleTypeModelBinder, which only looks at the first value from ValueProviderResult during BindModelAsync(). To fix this issue, line 65 in SimpleTypeModelBinder.cs should be changed from
var value = valueProviderResult.FirstValue;
to
var value = valueProviderResult.ToString();
Issue Analytics
- State:
- Created 4 years ago
- Comments:10 (5 by maintainers)
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@mkArtakMSFT this isn’t a question, it’s actually a bug report, with a solution! I can send you the sample application I used to test and fix (using ASP.NET Core v2.2).
@mkArtakMSFT I know the solution to the issue, so I’ll follow your suggestion and send you a PR with the fix.