CA1842: Do not use 'WhenAll' with a single task
| Property | Value |
|---|---|
| Rule ID | CA1842 |
| Title | Do not use 'WhenAll' with a single task |
| Category | Performance |
| Fix is breaking or non-breaking | Non-breaking |
| Enabled by default in .NET 9 | As suggestion |
Cause
WhenAll is called with a single task.
Rule description
Using WhenAll with a single task may result in performance loss.
How to fix violations
You should await or return the task instead.
When to suppress warnings
Do not suppress a warning from this rule.
See also
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