Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
Say, I have this simple API:
app.MapPost("/clients", (SearchCriteria search) => Results.Ok())
.AddFilter<ValidationFilter<SearchCriteria>>();I use empty validation filter:
public class ValidationFilter<T> : IRouteHandlerFilter where T : class
{
public async ValueTask<object> InvokeAsync(
RouteHandlerInvocationContext context,
RouteHandlerFilterDelegate next)
{
return await next(context);
}
}SearchCriteria class:
public class SearchCriteria
{
public int Id { get; set; }
public string Name { get; set; }
}Request to this API throws exception:
fail: Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
An unhandled exception has occurred while executing the request.
System.NullReferenceException: Object reference not set to an instance of an object.
at lambda_method5(Closure, RouteHandlerInvocationContext)
at ValidationFilter`1.InvokeAsync(RouteHandlerInvocationContext context, RouteHandlerFilterDelegate next) in E:\Projects\TestWebApi\TestWebApi\Program.cs:line 93
at Microsoft.AspNetCore.Http.RequestDelegateFactory.ExecuteObjectReturn(Object obj, HttpContext httpContext)
at Microsoft.AspNetCore.Http.RequestDelegateFactory.<>c__DisplayClass64_2.<b__2>d.MoveNext()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)
Expected Behavior
No response
Steps To Reproduce
No response
Exceptions (if any)
No response
.NET Version
7.0.100-preview.3.22179.4
Anything else?
No response