RDG011: Type parameters not supported

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	Value
Rule ID	RDG011
Fix is breaking or non-breaking	Non-breaking

Cause

This diagnostic is emitted by the Request Delegate Generator when an endpoint contains a route handler that captures a generic type.

Rule description

Endpoints that use generic type parameters are not supported. The endpoints within MapEndpoints produce this diagnostic because of the generic <T> parameter.

:::code language="csharp" source="~/../AspNetCore.Docs.Samples/fundamentals/aot/diagnostics/Rdg11/Program.cs" id="snippet_1" highlight="16":::

How to fix violations

Remove the generic type from endpoints.

:::code language="csharp" source="~/../AspNetCore.Docs.Samples/fundamentals/aot/diagnostics/Rdg11/Program.cs" id="snippet_1f" highlight="16":::

When to suppress warnings

This warning can be safely suppressed. When suppressed, the framework will fallback to generating the request delegate at runtime.