996 B
996 B
| title | description | author | monikerRange | ms.author | ms.date | uid |
|---|---|---|---|---|---|---|
| ASP0019: Suggest using IHeaderDictionary.Append or the indexer | Learn about analysis rule ASP0019: Suggest using IHeaderDictionary.Append or the indexer | tdykstra | >= aspnetcore-8.0 | tdykstra | 11/22/2022 | diagnostics/asp0019 |
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.