microsoftgraph / microsoftgraph/msgraph-sdk-dotnet-core

DateTimeTimeZoneExtensions should respect the TimeZone Kind

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#983 0 comments 2 reactions 0 assignees View on GitHub

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type:bug
Dominant language
C#
Stars
164
Forks
65
Avg merge
38m
Merged PRs (30d)
1

Description

Describe the bug

In DateTimeZoneExtensions.cs, the Method ToDateTimeOffset does not respect the Timezone identifier. The method needs to add DateTimeStyles.RoundTrip to the DateTime.ParseExact invocation.
A reproducable example is published here. To reproduce this the user has to be outside of the UTC Timezone.

Expected behavior

The DateTime Timezone should be respected (Z specifier for ZULU time at the end of the datetime string)

How to reproduce

Create a utc time, use it to create a DateTimeTimeZone, convert it to a DateTimeOffset when your local system is not UTC time

SDK Version

5.67.0

Latest version known to work for scenario above?

No response

Known Workarounds

See the provided example, it already contains the fix

Debug output
Configuration
  • OS: Windosw
  • Architecture: x64
Other information

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Open DateTimeZoneExtensions.cs and inspect ToDateTimeOffset, then reproduce the conversion described in the issue on a non-UTC system. Verify that DateTime.ParseExact uses the stated DateTimeStyles.RoundTrip behavior and that UTC input retains its Z time-zone semantics.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
api
Issue type
Bug
Difficulty
1/5
Estimated time
Under an hour
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
55/100

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