ASP0019: Suggest using IHeaderDictionary.Append or the indexer
| Value | |
|---|---|
| Rule ID | ASP0019 |
| Category | Usage |
| Fix is breaking or non-breaking | Non-breaking |
Cause
IDictionary.Add isn't recommended for setting or appending headers. IDictionary.Add throws an ArgumentException when attempting to add a duplicate key.
Rule description
IDictionary.Add isn't recommended for setting or appending headers.
How to fix violations
To fix a violation of this rule, use IHeaderDictionary.Append or the indexer to append or set headers.
When to suppress warnings
Do not suppress a warning from this rule.
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ASP.NET Core