31 lines
1.3 KiB
Markdown
31 lines
1.3 KiB
Markdown
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## ContentDisposition DateTimes returns slightly different string
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### Scope
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Minor
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### Version Introduced
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4.6
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### Source Analyzer Status
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Available
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### Change Description
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String representations of ContentDispositions have been updated, beginning in 4.6, to always represent the hour component of a DateTime with two digits. This is to comply with [RFC822](http://www.ietf.org/rfc/rfc0822.txt) and [RFC2822](http://www.ietf.org/rfc/rfc2822.txt). This causes `ContentDisposition.ToString` to return a slightly different string in 4.6 in scenarios where one of the disposition's time elements was before 10:00 AM. Note that ContentDispositions are sometimes serialized via converting them to strings, so any ContentDisposition ToString operations, serialization, or GetHashCode calls should be reviewed.
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- [ ] Quirked
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- [ ] Build-time break
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### Recommended Action
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Do not expect that string representations of ContentDispositions from different .NET Framework versions will correctly compare to one another. Convert the strings back to ContentDispositions, if possible, before conducting a comparison.
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### Affected APIs
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* `M:System.Net.Mime.ContentDisposition.ToString`
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* `M:System.Net.Mime.ContentDisposition.GetHashCode`
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### Category
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Networking
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[More information](https://msdn.microsoft.com/en-us/library/dn833125(v=vs.110).aspx#Networking)
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<!-- breaking change id: 78 -->
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