Question

我正在使用OData客户端从D365 AX获取数据。以下是有问题的代码

var test = context.Employees
                    .AddQueryOption("$filter", $"EmployeeNumber eq '{query.EmployeeNumber}'");
                var result = await test.ExecuteAsync();

我遇到以下异常

消息：System.ArgumentOutOfRangeException：长度不能小于大于零。参数名称：length堆栈跟踪：在System.String.Substring（Int32 startIndex，Int32长度）在Microsoft.OData.TypeUtils.ParseQualifiedTypeName（StringqualifiedTypeName，String＆namespaceName，String＆typeName，Boolean＆isCollection）在Microsoft.OData.JsonLight.ODataJsonLightContextUriParser.ResolveType（字符串类型名称，函数3 clientCustomTypeResolver, Boolean throwIfMetadataConflict) at Microsoft.OData.JsonLight.ODataJsonLightContextUriParser.ParseContextUriFragment(String fragment, Func 3 clientCustomTypeResolver，布尔型throwIfMetadataConflict，布尔型和未声明）处在Microsoft.OData.JsonLight.ODataJsonLightContextUriParser.ParseContextUri（ODataPayloadKind ExpectedPayloadKind，Func 3 clientCustomTypeResolver, Boolean throwIfMetadataConflict) at Microsoft.OData.JsonLight.ODataJsonLightContextUriParser.Parse(IEdmModel model, String contextUriFromPayload, ODataPayloadKind payloadKind, Func 3 clientCustomTypeResolver，Boolean needParseFragment，布尔throwIfMetadataConflict）中在Microsoft.OData.JsonLight.ODataJsonLightDeserializer.ReadPayloadStart（ODataPayloadKind payloadKind，PropertyAndAnnotationCollector propertyAndAnnotationCollector，布尔值isReadingNestedPayload，布尔值allowEmptyPayload）在Microsoft.OData.JsonLight.ODataJsonLightPayloadKindDetectionDeserializer.DetectPayloadKind（ODataPayloadKindDetectionInfo detectionInfo）在Microsoft.OData.JsonLight.ODataJsonLightInputContext.DetectPayloadKind（ODataPayloadKindDetectionInfo detectionInfo）在Microsoft.OData.Json.ODataJsonFormat.DetectPayloadKindImplementation（ODataMessageInfo messageInfo，ODataMessageReaderSettings设置）处在Microsoft.OData.Json.ODataJsonFormat.DetectPayloadKind（ODataMessageInfo messageInfo，ODataMessageReaderSettings设置）在Microsoft.OData.ODataMessageReader.DetectPayloadKind（）在Microsoft.OData.Client.Materialization.ODataMaterializer.CreateODataMessageReader（IODataResponseMessage responseMessage，ResponseInfo responseInfo，ODataPayloadKind＆payloadKind）在Microsoft.OData.Client.Materialization.ODataMaterializer.CreateMaterializerForMessage（IODataResponseMessage responseMessage，ResponseInfo responseInfo，类型materializerType，QueryComponents queryComponents，ProjectionPlan计划，ODataPayloadKind有效负载类型）在Microsoft.OData.Client.MaterializeAtom..ctor（ResponseInfo responseInfo，QueryComponents queryComponents，ProjectionPlan计划，IODataResponseMessage responseMessage，ODataPayloadKind payloadKind）在Microsoft.OData.Client.QueryResult.CreateMaterializer（ProjectionPlan计划，ODataPayloadKind有效负载类型）在Microsoft.OData.Client.QueryResult.ProcessResult [TElement]（ProjectionPlan计划）在Microsoft.OData.Client.DataServiceRequest.EndExecute [TElement]（对象源，DataServiceContext上下文，String方法，IAsyncResult asyncResult）在Microsoft.OData.Client.DataServiceQuery 1.EndExecute(IAsyncResult asyncResult) at System.Threading.Tasks.TaskFactory 1.FromAsyncCoreLogic（IAsyncResult iar，Func 2 endFunction, Action 1 endAction，Task`1 promise，Boolean requiredSynchronization）中 ---从上一个引发异常的位置开始的堆栈跟踪---

Kinldy帮我解决这个问题。

Answer 1

您的edmx字符串与OData V4客户端代码生成器生成的客户端代码之间似乎存在冲突。我遇到了同样的错误，原因是我将edmx字符串存储在一个单独的文件中，并且我正在使用该文件的旧版本。最终，更新edmx字符串文件解决了该错误。

长度不能小于零。参数名称：OData Client

1 个答案: