OpenFileDailogBox - C# Discussion Boards

16-Jan-07 18:34

Hi,
I am having a WCF service which exposes two functions. One returns a string and another returns an array of custom object Employee. Employee class is a DataContract and all it contains is simple premitive data types marked as DataMember. First method works fine but I am not able to get the second method GetEmployeeArray() working.
Any clues how to pass complex data types with premitive data members in WCF? Sniff | :^)

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

KevinMac16-Jan-07 18:45

KevinMac

16-Jan-07 18:45

Just curious but what type of formatter are you using. I have had success using the BinaryFormatter but it has a bit different syntax from the Messaging namespace for MSMQ. I was passing a generic list and it was working pretty good. Can you post a code bit of code so I can see what it looks like?

jdkulkarni16-Jan-07 18:52

16-Jan-07 18:52

Thanks for the quick reply Kevin.
Here is my code.
My Service Contract looks like this.

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using System.ServiceModel;<br />
using System.Data;<br />
<br />
namespace WCFService<br />
{<br />
    [ServiceContract]    <br />
    public interface IWCFService<br />
    {<br />
        [OperationContract]<br />
        string GetSystemIPAddress();<br />
        <br />
        [OperationContract]<br />
        object[] GetEmpolyeeArray();<br />
    }<br />
}<br />

The class implementing the service contract looks like this.

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using SystemInfo;<br />
using System.Data;<br />
using System.ServiceModel;<br />
<br />
namespace WCFService<br />
{<br />
    [ServiceBehavior(IncludeExceptionDetailInFaults = true)]<br />
    public class WCFService : IWCFService<br />
    {<br />
        #region IWCFService Members<br />
<br />
        public string GetSystemIPAddress()<br />
        {<br />
            return new SystemInfo.SystemInfo().GetIPAddress();<br />
        }<br />
        <br />
        public object[] GetEmpolyeeArray()<br />
        {<br />
            DataSet ds = new SystemInfo.SystemInfo().GetEmployeeList();<br />
            Employee[] emps = new Employee[ds.Tables[0].Rows.Count];<br />
            int index = 0;<br />
            foreach (DataRow row in ds.Tables[0].Rows)<br />
            {<br />
                emps[index] = new Employee();<br />
                emps[index].EmployeeID = Convert.ToInt32(row["EmployeeNo"]);<br />
                emps[index].Experience = Convert.ToDecimal(row["Experience"]);<br />
                emps[index].FirstName = row["FirstName"].ToString();<br />
                emps[index].LastName = row["LastName"].ToString();<br />
                emps[index].MiddleName = row["MiddleName"].ToString();<br />
                emps[index].Qualification = row["Qualification"].ToString();<br />
                index++;                <br />
            }<br />
            return emps;<br />
        }<br />
        #endregion<br />
    }<br />
}<br />

My DataContract is this

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
using System.ServiceModel;<br />
using System.Runtime.Serialization;<br />
<br />
namespace WCFService<br />
{<br />
    [DataContract]<br />
    public class Employee<br />
    {<br />
        [DataMember]<br />
        public int EmployeeID;<br />
        [DataMember]<br />
        public string FirstName;<br />
        [DataMember]<br />
        public string MiddleName;<br />
        [DataMember]<br />
        public string LastName;<br />
        [DataMember]<br />
        public decimal Experience;<br />
        [DataMember]<br />
        public string Qualification;<br />
    }<br />
}<br />

My Java client is like this:

<br />
package wcfjavaclient;<br />
<br />
/**<br />
 *<br />
 * @author jkulkarni<br />
 */<br />
public class Main {<br />
    <br />
    /** Creates a new instance of Main */<br />
    public Main() {<br />
    }<br />
    <br />
    /**<br />
     * @param args the command line arguments<br />
     */<br />
    public static void main(String[] args) {<br />
        try { // Call Web Service Operation<br />
            WS.WCFService service = new WS.WCFService();<br />
            WS.IWCFService port = service.getBasicHttpBindingIWCFService();<br />
            // TODO process result here<br />
            java.lang.String result = port.getSystemIPAddress();<br />
            System.out.println("Result = "+result);<br />
        } catch (Exception ex) {<br />
            // TODO handle custom exceptions here<br />
        }        <br />
    }    <br />
}<br />

Please let me know if you want to see anything more. First method GetSystemIP works fine. But second one does not.

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

KevinMac16-Jan-07 19:59

KevinMac

16-Jan-07 19:59

Ok don't take this as fact I am working through the WCF myself. I had very similar issues so I experimented with the [XmlSerializerFormat] attribute for the service contract and got better results. I am not sure what the precise issue is but it seems to be related to the serilization of the array. I used a generic list instead of an array but I cannot see that that would make any difference.

jdkulkarni16-Jan-07 20:31

16-Jan-07 20:31

Hi Kevin,
Thanks again and I am trying with [XmlSerializerFormat] attribute. But I do not know it is showing some wierd error like this.

Web service client can not be created by JAXWS:wsimport utility.
Reason: duplicate "message" entity: "IWCFService_GetSystemIPAddress_InputMessage"

My WSDL is like this.

<br />
<small><br />
<pre><br />
<?xml version="1.0" encoding="utf-8" ?> <br />
- <wsdl:definitions name="WCFServiceImplement" targetNamespace="http://tempuri.org/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tns="http://tempuri.org/" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:i0="WCFServiceNamespace" xmlns:wsap="http://schemas.xmlsoap.org/ws/2004/08/addressing/policy" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msc="http://schemas.microsoft.com/ws/2005/12/wsdl/contract" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:wsa10="http://www.w3.org/2005/08/addressing" xmlns:wsx="http://schemas.xmlsoap.org/ws/2004/09/mex"><br />
  <wsdl:import namespace="WCFServiceNamespace" location="http://10.34.34.241:8578/WCFService?wsdl=wsdl0" /> <br />
- <wsdl:types><br />
- <xsd:schema targetNamespace="http://tempuri.org/Imports"><br />
  <xsd:import schemaLocation="http://10.34.34.241:8578/WCFService?xsd=xsd0" namespace="http://tempuri.org/" /> <br />
  <xsd:import schemaLocation="http://10.34.34.241:8578/WCFService?xsd=xsd1" namespace="http://schemas.microsoft.com/2003/10/Serialization/" /> <br />
  </xsd:schema><br />
  </wsdl:types><br />
- <wsdl:message name="IWCFService_GetSystemIPAddress_InputMessage"><br />
  <wsdl:part name="parameters" element="tns:GetSystemIPAddress" /> <br />
  </wsdl:message><br />
- <wsdl:message name="IWCFService_GetSystemIPAddress_OutputMessage"><br />
  <wsdl:part name="parameters" element="tns:GetSystemIPAddressResponse" /> <br />
  </wsdl:message><br />
- <wsdl:portType name="IWCFService"><br />
- <wsdl:operation name="GetSystemIPAddress"><br />
  <wsdl:input wsaw:Action="http://tempuri.org/IWCFService/GetSystemIPAddress" message="tns:IWCFService_GetSystemIPAddress_InputMessage" /> <br />
  <wsdl:output wsaw:Action="http://tempuri.org/IWCFService/GetSystemIPAddressResponse" message="tns:IWCFService_GetSystemIPAddress_OutputMessage" /> <br />
  </wsdl:operation><br />
  </wsdl:portType><br />
- <wsdl:service name="WCFServiceImplement"><br />
- <wsdl:port name="NetTcpBinding_IWCFService" binding="i0:NetTcpBinding_IWCFService"><br />
  <soap12:address location="net.tcp://10.34.34.241:8999/WCFService" /> <br />
- <wsa10:EndpointReference><br />
  <wsa10:Address>net.tcp://10.34.34.241:8999/WCFService</wsa10:Address> <br />
  </wsa10:EndpointReference><br />
  </wsdl:port><br />
- <wsdl:port name="BasicHttpBinding_IWCFService" binding="i0:BasicHttpBinding_IWCFService"><br />
  <soap:address location="http://10.34.34.241:8888/WCFService" /> <br />
  </wsdl:port><br />
  </wsdl:service><br />
  </wsdl:definitions><br />
</pre><br />
</small><br />

Any idea?

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

jdkulkarni16-Jan-07 22:42

16-Jan-07 22:42

Hi Kevin,
Finally I have done with it. The problem is not with WCF and [XmlSerializerFormat] attribute is also not required for service contract. The key concept is JAVA client can not get an Array of object of DataContract member. I have tried several ways but Array of Employee class never worked out. I tried it with List<employee> and it worked very fine.

Thanks for your prompt response and guidance. Big Grin | :-D

Jayant D. Kulkarni
Brainbench Certified Software Engineer in C#, ASP.NET, .NET Framework and ADO.NET

OpenFileDailogBox

indiaone16-Jan-07 18:28

indiaone

16-Jan-07 18:28

Hi,

I am trying to open a file that not exit.
so want i want if file not there it should create a file with same name.

Thanks.

Flysocket16-Jan-07 18:33

Flysocket

16-Jan-07 18:33

give a file name to openFileDialog
you can confirm if the file exist
if not you can create the same name file.

I want to make some friends here

indiaone17-Jan-07 18:51

indiaone

17-Jan-07 18:51

Hi.

Thanks for your help.

I did same and it's working.

now what i want..

if folder not exit then how to check.
for example:

Path C:\XMLFiles\employee.xml

if file not exit we can check and create new file with same name but if folder not exit then what to do.

how to check and how to create new folder with same name.

help me.

Thanks

Christian Graus16-Jan-07 19:26

16-Jan-07 19:26

System.IO.File.Exists - something like that. If it doesn't exist, create it.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

indiaone16-Jan-07 21:34

indiaone

16-Jan-07 21:34

Hi,

Thanks for reply but i want example on this.

Thanks

Christian Graus16-Jan-07 23:52

Regarding focus setting on a drop down in C#!

16-Jan-07 23:52

Well, which bit is confusing you ? I can't tell you how to create the file, I don't know why you're creating it, or what you want to put in it.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

UDP send file issue

Flysocket16-Jan-07 18:25

Flysocket

16-Jan-07 18:25

I try to use UDPClient to send a file
but when i send a small file like 50k, the UDPClient works good
but when i send a file 500k
the UDPClient.Send() throw an exception

A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself

Someone can help me to fix this issue, it looks like the send buffer and receive buffer are to small.

I want to make some friends here

Re: UDP send file issue

raju_net181816-Jan-07 19:33

raju_net1818

16-Jan-07 19:33

send file streams inspite the file directly

Mirunab16-Jan-07 17:39

Mirunab

16-Jan-07 17:39

Hi All,
In my page,am using a dropdown. After selecting the drop down the page is getting postback. After the postback is done, the focus on that control is getting lost. I want the focus to be set on the Item which I have selected earlier(before postback)..
Thanks in Advance...

Thanks,
Mirunab

Re: Regarding focus setting on a drop down in C#!

Christian Graus16-Jan-07 19:28

Reverse Engineer / view C# / .NET code?

16-Jan-07 19:28

Why do all the ASP.NEt questions end up here ?

If you want the control selected, your best bet would be to avoid auto postback. Otherwise, you need to programattically set focus to the control in your event handler that is being called anyhow. Not sure if there's a property in C#, or if you need to write some jscript.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

JoeRip16-Jan-07 16:33

JoeRip

16-Jan-07 16:33

I have a .NET exe that I don't have the code for. Is there a way to reverse engineer it, and look at the code?

Re: Reverse Engineer / view C# / .NET code?

Christian Graus16-Jan-07 16:53

16-Jan-07 16:53

Sure, just google for reflector, and download it.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

C# on Linux

loscarlitos16-Jan-07 14:32

loscarlitos

16-Jan-07 14:32

Is it possible, also graf.
And what do i need to do, look for?

Christian Graus16-Jan-07 14:57

16-Jan-07 14:57

loscarlitos wrote:

Is it possible, also graf.
And what do i need to do, look for?

I'm not sure what a lot of this means, but Mono is the Linux port of C#.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

User 665816-Jan-07 15:15

User 6658

16-Jan-07 15:15

You need Mono. See the articles on this site and this link:

Mono

regards

modified 12-Sep-18 21:01pm.

Seishin#16-Jan-07 22:30

Seishin#

16-Jan-07 22:30

well mono is the only chance of c# on linux, but as I said "chance"..
mono isn't the framework. it's less functional and if memory didn't trick me it's only framework 1.1 'compatiblie'

life is study!!!

Darren D17-Jan-07 2:55

Darren D

17-Jan-07 2:55

I thought Microsoft was supposed to be working on Linux support. I found this for FreeBSD: http://msdn.microsoft.com/msdnmag/issues/02/07/SharedSourceCLI/

DD