C＃MemoryStream - 此流不支持超时[重复]

这个问题在这里已有答案：

• Newtonsoft Json.net - how to serialize content of a stream? 1回答

我正在尝试动态创建一个csv文件并将流输出到浏览器 .

这是我的api终点：

[System.Web.Http.HttpGet]
    [System.Web.Http.Route("export-to-csv")]
    public FileStreamResult ExportDeposits([FromUri(Name = "")]DepositSearchParamsVM depositSearchParamsVM)
        {
            if (depositSearchParamsVM == null)
            {
                depositSearchParamsVM = new DepositSearchParamsVM();
            }
            var records = _DepositsService.SearchDeposits(depositSearchParamsVM);
            var result = _DepositsService.WriteCsvToMemory(records);
            var memoryStream = new MemoryStream(result);

            return new FileStreamResult(memoryStream, "text/csv") { FileDownloadName = "export.csv" };
    }

这是我的服务方法：

public byte[] WriteCsvToMemory(IEnumerable<DepositSummaryVM> records)
        {
            using (var stream = new MemoryStream())
            using (var reader = new StreamReader(stream))
            using (var writer = new StreamWriter(stream))
            using (var csv = new CsvWriter(writer))
            {
                csv.WriteRecords(records);
                writer.Flush();
                stream.Position = 0;
                var text = reader.ReadToEnd();

                return stream.ToArray();

}

}

这是错误消息：

{“message”：“发生了错误 . ”，“exceptionMessage”：“在'System.IO.MemoryStream'上从'ReadTimeout'获取值时出错 . ”，“exceptionType”：“Newtonsoft.Json.JsonSerializationException”，“ stackTrace“：”at Newtonsoft.Json.Serialization.DynamicValueProvider.GetValue（Object target）\ r \ n在Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.CalculatePropertyValues（JsonWriter writer，Object value，JsonContainerContract contract，JsonProperty member，JsonProperty property，JsonContract＆memberContract） ，对象＆memberValue）\ r \ n在Newtonsoft.Json.Serialization.JsonSerializer.JsonSerializerInternalWriter中的Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject（JsonWriter writer，Object value，JsonObjectContract contract，JsonProperty成员，JsonContainerContract collectionContract，JsonProperty containerProperty）\ r \ n . SerializeValue（JsonWriter writer，Object value，JsonContract valueContract，JsonProperty成员，JsonContainerContract containerContract，JsonProperty conta inerProperty）\ r \ n at Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeObject（JsonWriter writer，Object value，JsonObjectContract contract，JsonProperty member，JsonContainerContract collectionContract，JsonProperty containerProperty）\ r \ n在Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.SerializeValue（ JsonWriter编写器，Object值，JsonContract valueContract，JsonProperty成员，JsonContainerContract containerContract，JsonProperty containerProperty）\ r \ n在Newtonsoft.Json.Serialization.JsonSerializerInternalWriter.Serialize（JsonWriter jsonWriter，Object value，Type objectType）\ r \ n在Newtonsoft.Json .JsonSerializer.SerializeInternal（JsonWriter jsonWriter，Object value，Type objectType）\ r \ n在System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStream（Type type，Object value，Stream writeStream，Encoding effectiveEncoding）\ r \ n在System . Net.Http.Formatting.JsonMediaTypeFormatter.WriteToStream（Type type，Object value，Stream writeStream，Encodin在System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStream（类型类型，对象值，流writeStream，HttpContent内容）\ r \ n在System.Net.Http.Formatting.BaseJsonMediaTypeFormatter.WriteToStreamAsync（类型）中的有效编码）\ r \ n type，Object value，Stream writeStream，HttpContent content，TransportContext transportContext，CancellationToken cancellationToken）\ r \ n ---从抛出异常的上一个位置开始的堆栈跟踪结束--- \ r \ n在System.Runtime.CompilerServices.TaskAwaiter .ThrowForNonSuccess（任务任务）\ r \ n在System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification（任务任务）\ r \ n在System.Web.Http.Owin.HttpMessageHandlerAdapter.d__13.MoveNext（）“，”innerException“： {“message”：“发生错误 . ”，“exceptionMessage”：“此流不支持超时 . ”，“exceptionType”：“System.InvalidOperationException”，“stackTrace”：“在System.IO.Stream . get_ReadTimeout（）\ r \ n在Newtonsoft.Json的GetReadTimeout（Object）\ r \ n中 . Serialization.DynamicValueProvider.GetValue（Object target）“}}