Swashbuckle.OData.Core throws Specified argument was out of the range of valid values exception and failing to generate swagger ui

[gkiran1]

I am planning to integrate Swagger UI for my OData services. I have configured my SwaggerConfig.cs accrodingly. My environment details as below:

• .Net 4.7.2
• Microsoft.AspNet.OData 7.1.0
• Swashbuckle.Core 5.6.0
• Swashbuckle.OData 1.0.0 (from Swashbuckle.OData.Core)

Below exception is being thrown: 500 : {"Message":"An error has occurred.","ExceptionMessage":"Specified argument was out of the range of valid values.\r\nParameter name: TypeKind","ExceptionType":"System.ArgumentOutOfRangeException","StackTrace":" at Swashbuckle.OData.Descriptions.ODataSwaggerUtilities.SetSwaggerType(Parameter parameter, IEdmType edmType)\r\n at Swashbuckle.OData.Descriptions.ODataSwaggerUtilities.SetSwaggerType(Parameter parameter, IEdmType edmType)\r\n at Swashbuckle.OData.Descriptions.ODataSwaggerUtilities.Parameter(IList1 parameters, String name, String kind, String description, IEdmType type, Boolean isRequired)\r\n at Swashbuckle.OData.Descriptions.ODataSwaggerUtilities.AddSwaggerParametersForFunction(List1 swaggerParameters, IEdmOperation operation)\r\n at Swashbuckle.OData.Descriptions.ODataSwaggerUtilities.CreateSwaggerPathForOperationOfEntitySet(IEdmOperation operation, IEdmEntitySet entitySet, ODataRoute oDataRoute)\r\n at Swashbuckle.OData.Descriptions.EntityDataModelRouteGenerator.<>c__DisplayClass5_1.<GenerateOperationRoutes>b__3(IEdmEntitySet entitySet)\r\n at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext()\r\n at System.Collections.Generic.List1.InsertRange(Int32 index, IEnumerable1 collection)\r\n at System.Collections.Generic.List1.AddRange(IEnumerable1 collection)\r\n at Swashbuckle.OData.Descriptions.EntityDataModelRouteGenerator.GenerateOperationRoutes(ODataRoute oDataRoute)\r\n at Swashbuckle.OData.Descriptions.EntityDataModelRouteGenerator.Generate(ODataRoute oDataRoute)\r\n at System.Linq.Enumerable.d17`2.MoveNext()\r\n at System.Linq.Enumerable.d172.MoveNext()\r\n at System.Linq.Enumerable.<SelectManyIterator>d__172.MoveNext()\r\n at System.Linq.Enumerable.d17`2.MoveNext()\r\n at System.Linq.Enumerable.d641.MoveNext()\r\n at System.Linq.Enumerable.<SelectManyIterator>d__172.MoveNext()\r\n at System.Collections.Generic.List1..ctor(IEnumerable1 collection)\r\n at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)\r\n at Swashbuckle.OData.CollectionExtentions.ToCollection[T](IEnumerable1 source)\r\n at Swashbuckle.OData.Descriptions.ODataApiExplorer.GetApiDescriptions()\r\n at System.Lazy1.CreateValue()\r\n at System.Lazy1.LazyInitValue()\r\n at System.Lazy1.get_Value()\r\n at Swashbuckle.OData.Descriptions.ODataApiExplorer.get_ApiDescriptions()\r\n at Swashbuckle.OData.ODataSwaggerProvider.GetApiDescriptionsFor(String apiVersion)\r\n at Swashbuckle.OData.ODataSwaggerProvider.GenerateSwagger(String rootUrl, String apiVersion)\r\n at Swashbuckle.OData.ODataSwaggerProvider.<>c__DisplayClass4_0.<GetSwagger>b__1()\r\n at System.Lazy1.CreateValue()\r\n at System.Lazy1.LazyInitValue()\r\n at System.Lazy1.get_Value()\r\n at Swashbuckle.OData.ODataSwaggerProvider.GetSwagger(String rootUrl, String apiVersion)\r\n at Swashbuckle.Application.SwaggerDocsHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)\r\n`

[andyward]

Your best best here is going to be to narrow down the OData model to just expose a single controller and service that triggers the issue.