6 Comments

• I tried this, but didn’t work

  also tried this

  http://silverlight.net/forums/p/21513/77019.aspx#77019

  no luck

  finally i am taking top 100 records.

• hi, for me this code don’t work

  ERROR:

  System.Runtime.Serialization.SerializationException: Type ‘System.Collections.Generic.List`1[[ClientWS.wcfServerService.Employee, ClientWS, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]’ with data contract name ‘ArrayOfEmployee:http://schemas.datacontract.org/2004/07/wcfServer‘ is not expected. Add any types not known statically to the list of known types – for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.
  at System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeAndVerifyType(DataContract dataContract, XmlWriterDelegator xmlWriter, Object obj, Boolean verifyKnownType, RuntimeTypeHandle declaredTypeHandle)
  at System.Runtime.Serialization.XmlObjectSerializerWriteContext.SerializeWithXsiTypeAtTopLevel(DataContract dataContract, XmlWriterDelegator xmlWriter, Object obj, RuntimeTypeHandle originalDeclaredTypeHandle)
  at System.Runtime.Serialization.DataContractSerializer.InternalWriteObjectContent(XmlWriterDelegator writer, Object graph)
  at System.Runtime.Serialization.DataContractSerializer.InternalWriteObject(XmlWriterDelegator writer, Object graph)
  at System.Runtime.Serialization.XmlObjectSerializer.WriteObjectHandleExceptions(XmlWriterDelegator writer, Object graph)
  at System.Runtime.Serialization.XmlObjectSerializer.WriteObject(XmlDictionaryWriter writer, Object graph)
  at System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.SerializeParameterPart(XmlDictionaryWriter writer, PartInfo part, Object graph)

  My code:

  Server side – WCF

  IService1.cs
  
namespace wcfServer
{
// NOTE: If you change the interface name "IService1" here, you must also update the reference to "IService1" in Web.config.
[ServiceContract]
[ServiceKnownType(typeof(List))]
public interface IService1
{
[OperationContract]
string ParseObject(object obj);
}
}


  Service1.svc.cs
  
namespace wcfServer
{
// NOTE: If you change the class name "Service1" here, you must also update the reference to "Service1" in Web.config and in the associated .svc file.
public class Service1 : IService1
{
#region Implementation of IService1

  public string ParseObject(object obj)
  {
  List emp = (List) obj;
  string empDetalils = string.Format("EmployeeID {0} And Employee Name {1} And GetType is {2}",
  emp[0].EmployeeID, emp[0].EmployeeName, obj.GetType());
  return empDetalils;
  }

  #endregion
}
}


  Employee.cs
  
namespace wcfServer
{
[DataContract]
public class Employee
{
[DataMember]
public int EmployeeID { get; set; }
[DataMember]
public string EmployeeName { get; set; }
}
}


  Client side:

  toWcfServer.cs
  
namespace ClientWS
{
public class toWcfServer : IService1
{
#region Implementation of IService1

  public string ParseObject(object obj)
  {
  try
  {
  wcfServerService.Service1Client client = new Service1Client();
  string strEmployee = client.ParseObject(obj);
  client.Close();

  return strEmployee;
  }
  catch (Exception ex)
  {
  return ex.InnerException.ToString();
  }
  }

  #endregion
}
}


  Form1.cs
  
private void button1_Click(object sender, EventArgs e)
{
toWcfServer toServer = new toWcfServer();
List listEmployees = new List();
listEmployees.Add(new Employee(){EmployeeID = 10, EmployeeName = "PEPEK"});
textBox1.Text = toServer.ParseObject(listEmployees);
}


  what is wrong in the code?

  • Hi,

    Thanks for going through my article.

    In your code you just need to change following lines:

    IService1.cs

    namespace wcfServer
    {
    // NOTE: If you change the interface name “IService1” here, you must also update the reference to “IService1” in Web.config.
    [ServiceContract]
    [ServiceKnownType(typeof(Employee))] //Earlier it was List
    public interface IService1
    {
    [OperationContract]
    string ParseObject(object obj);
    }
    }

    Because your ServiceMessage contains Employee object which .NET f/w don’t knows….so you just need to introduce your Employee object to .NET f/w and [ServiceKnownType(typeof(Employee))] does the same.

    Feel free to get back to me if still it doesn’t work.

    Happy Coding,
    Kiran

• Thanks kiran , Great article it worked for me.

• This topic helped me to solve my issue… Thanks

• Hey I am so thrilled I found your website, I really found you by accident,
  while I was searching on Aol for something else,
  Anyways I am here now and would just like to say thanks a lot for a fantastic post and a
  all round thrilling blog (I also love the theme/design), I don’t have time to read
  it all at the minute but I have saved it and also included your RSS feeds, so when I have time I
  will be back to read much more, Please do keep
  up the awesome job.

Comments are closed.