Error converting value to type system

Socket Opened = System.EventArgs
Websocket Error Event = System.IO.IOException: The read operation failed, see inner exception. ---> Newtonsoft.Json.JsonSerializationException: Error converting value "" to type 'System.Guid'. Path 'client_oid', line 1, position 163. ---> System.ArgumentException: Could not cast or convert from System.String to System.Guid.
   at Newtonsoft.Json.Utilities.ConvertUtils.EnsureTypeAssignable(Object value, Type initialType, Type targetType)
   at Newtonsoft.Json.Utilities.ConvertUtils.ConvertOrCast(Object initialValue, CultureInfo culture, Type targetType)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   --- End of inner exception stack trace ---
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.EnsureType(JsonReader reader, Object value, CultureInfo culture, JsonContract contract, Type targetType)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.SetPropertyValue(JsonProperty property, JsonConverter propertyConverter, JsonContainerContract containerContract, JsonProperty containerProperty, JsonReader reader, Object target)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject(Object newObject, JsonReader reader, JsonObjectContract contract, JsonProperty member, String id)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateObject(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.CreateValueInternal(JsonReader reader, Type objectType, JsonContract contract, JsonProperty member, JsonContainerContract containerContract, JsonProperty containerMember, Object existingValue)
   at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)
   at Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)
   at Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)
   at Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)
   at CoinbasePro.WebSocket.WebSocket.WebSocket_MessageReceived(Object sender, MessageReceivedEventArgs e)
   at WebSocket4Net.WebSocket.FireMessageReceived(String message)
   at WebSocket4Net.Command.Text.ExecuteCommand(WebSocket session, WebSocketCommandInfo commandInfo)
   at WebSocket4Net.WebSocket.OnDataReceived(Byte[] data, Int32 offset, Int32 length)
   at WebSocket4Net.WebSocket.client_DataReceived(Object sender, DataEventArgs e)
   at SuperSocket.ClientEngine.ClientSession.OnDataReceived(Byte[] data, Int32 offset, Int32 length)
   at SuperSocket.ClientEngine.AuthenticatedStreamTcpSession.OnDataRead(IAsyncResult result)
   at System.Net.LazyAsyncResult.Complete(IntPtr userToken)
   at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   --- End of inner exception stack trace ---
   at System.Net.Security._SslStream.ProcessRead(Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
   at System.Net.Security._SslStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback asyncCallback, Object asyncState)
   at System.Net.Security.SslStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback asyncCallback, Object asyncState)
   at SuperSocket.ClientEngine.AuthenticatedStreamTcpSession.StartRead()
Socket Opened = System.EventArgs
An unhandled exception of type 'Newtonsoft.Json.JsonSerializationException' occurred in System.dll
Error converting value "" to type 'System.Guid'. Path 'client_oid', line 1, position 163.

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• Question

• An exception of type

  ‘Newtonsoft.Json.JsonSerializationException’ occurred in Newtonsoft.Json.DLL but was not handled in user code

  Additional information: Error converting value {null} to type ‘System.Boolean’. Path ‘collection[8].downloadable’, line 1, position 22866.

  or

  converter value {null} from path ‘track[40].like_count

  public class User
      {
          public string full_name { get; set; }
          public string country { get; set; }
          public string city { get; set; }
          public int tracks_count { get; set; }
          public int followers_count { get; set; }
          public int followings_count { get; set; }
          public int public_favorites_count { get; set; }
          public int groups_count { get; set; }
          public string description { get; set; }
          public string plan { get; set; }
          public int id { get; set; }
          public string uri { get; set; }
          public string username { get; set; }
          public string kind { get; set; }
          public string permalink { get; set; }
          public string permalink_url { get; set; }
          public string first_name { get; set; }
          public string avatar_url { get; set; }
          public string last_modified { get; set; }
      }
  
      public class __invalid_type__0
      {
          public string urn { get; set; }
          public int entry_time { get; set; }
          public string visual_url { get; set; }
          public object link { get; set; }
      }
  
      public class Visuals2
      {
          public __invalid_type__0 __invalid_name__0 { get; set; }
      }
  
      public class Visuals
      {
          public string urn { get; set; }
          public bool enabled { get; set; }
          public Visuals2 visuals { get; set; }
          public object tracking { get; set; }
      }
  
      public class Collection
      {
          public User user { get; set; }
          public int user_id { get; set; }
          public string genre { get; set; }
          public string tag_list { get; set; }
          public int duration { get; set; }
          public bool downloadable { get; set; }
          public bool streamable { get; set; }
          public int original_content_size { get; set; }
          public bool commentable { get; set; }
          public string sharing { get; set; }
          public bool @public { get; set; }
          public string created_at { get; set; }
          public string updated_at { get; set; }
          public string isrc { get; set; }
          public string state { get; set; }
          public bool embeddable { get; set; }
          public string embeddable_by { get; set; }
          public string license { get; set; }
          public string waveform_url { get; set; }
          public bool feedable { get; set; }
          public string label_name { get; set; }
          public string release_date { get; set; }
          public bool has_downloads_left { get; set; }
          public string purchase_title { get; set; }
          public string purchase_url { get; set; }
          public string policy { get; set; }
          public string monetization_model { get; set; }
          public Visuals visuals { get; set; }
          public string permalink { get; set; }
          public string title { get; set; }
          public string description { get; set; }
          public string track_type { get; set; }
          public string last_modified { get; set; }
          public string artwork_url { get; set; }
          public int id { get; set; }
          public string kind { get; set; }
          public int comment_count { get; set; }
          public int download_count { get; set; }
          public string uri { get; set; }
          public string stream_url { get; set; }
          public int playback_count { get; set; }
          public string download_url { get; set; }
          public object secret_token { get; set; }
          public int reposts_count { get; set; }
          public string permalink_url { get; set; }
          public int likes_count { get; set; }
      }
  
      public class Facet2
      {
          public string filter { get; set; }
          public int count { get; set; }
          public string value { get; set; }
      }
  
      public class Facet
      {
          public string name { get; set; }
          public List<Facet2> facets { get; set; }
      }
  
      public class RootObject
      {
          public List<Collection> collection { get; set; }
          public List<Facet> facets { get; set; }
          public int total_results { get; set; }
          public string qid { get; set; }
          public string query_urn { get; set; }
          public string next_href { get; set; }
      }

  use Json. How to fix it?

  var query_items = await query.SoundCloudTrack(link);
                  Next_search_Uri = null;
                  if (query_items != null)
                  {
                      var tr = JsonConvert.DeserializeObject<TrackSoundCloud.RootObject>(query_items);
                      SoundcloudItemsSource.Source = tr.tracks;

  e.g

  ‘collection[8].downloadable’ is null then replace it into ‘false’

  ‘track[40].like_count  is null then replace it into ‘1’

Hello friends,

here am facing little bit problem while deserializing json string to list

json string : Result of restful service

""[{\"UName\":\"prasad\",\"LastName\":\"k\",\"FirstName\":\"sai\"}]""

and i want to convert this json string to list of «_TempUser» class

my list :

public class _TempUser
      {

          public string UName
          {
              get;
              set;

          }


          public string LastName
          {
              get;
              set;
          }

          public string FirstName
          {
              get;
              set;
          }
      }

Error is

Error converting value "[{"UName":"prasad","LastName":"k","FirstName":"sai"}]" to type 'System.Collections.Generic.List`1[loginServices.Login_Service+_TempUser]'. Path '', line 1, position 70.

code in my restful service

List<_TempUser> List = new List<_TempUser>();

_TempUser ud = new _TempUser();

           ud.UName = "prasad";
           ud.FirstName = "sai";
           ud.LastName = "k";
           List.Add(ud);

           string json = JsonConvert.SerializeObject(List);

           return json;

code : for calling restful service

 var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://IpAddress:Post/Login/RestServiceName.svc/RestMethoName");
            httpWebRequest.ContentType = "text/json";
            httpWebRequest.Method = "POST";
            using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
            {
                string json =JsonConvert.SerializeObject(Req);
                streamWriter.Write(json);
                streamWriter.Flush();
                streamWriter.Close();

                var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    string result =  streamReader.ReadToEnd();
                  


                    List<_TempUser> List = new List<_TempUser>();  

                    List = JsonConvert.DeserializeObject<List<_TempUser>>result   
                }

            }

any modifications or suggestions plz?

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About briancaos

Developer at Pentia A/S since 2003. Have developed Web Applications using Sitecore Since Sitecore 4.1.

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• Question

• Hi,

  I have written a function to get event logs from multiple machine as below. But getting error ‘Cannot convert value to type System.String.’ when passing a text file of computers using $comp = Get-Content -path ‘file path’.

  $Comp = Import-csv -Path ‘CSV path’

  Get-EventLogReport -Computer $Comp -Before ’10/10/2016′ -After 10/09/2016 -LogName ‘System’ -CSVPath C:3.csv -Newest 5

  Scripts:   

  Function Get-EventLogReport
  {
  [CmdletBinding()]
  param
  (

          [Parameter(Mandatory=$true)][string]$Computers,
          [Parameter(Mandatory=$true)][string]$Before,
          [Parameter(Mandatory=$true)][string]$After,
          [Parameter(Mandatory=$true)][string]$CSVPath,
          [Parameter(Mandatory=$true)][string]$LogName,
          [Parameter(Mandatory=$false)][int]$Newest

          
  )
  foreach ($Computer in $Computers)
  {
  Write-verbose ‘Processing the Event Logs on each server’ -Verbose
  if (!($Newest))
  {
  Get-EventLog -ComputerName $Computers -LogName $LogName -EntryType Warning,Error | Select-Object -Property * | Export-CSV -Path $CSVPath -NoTypeInformation
  }
  else
  {
  Get-EventLog -ComputerName $Computers -LogName $LogName -Newest $Newest -EntryType Warning,Error | Select-Object -Property * | Export-CSV -Path $CSVPath -NoTypeInformation
  }
  }
  Write-Verbose ‘Event log is processed and exported to CSV file’ -Verbose
  }

  I am sure issue is with foreach but unable to fix it since morning.

  Script is working fine when i am using -computername $env:computername

  Thanks in advance

  Roushan