Call WCF Method in for loop

07-01-2009 7:55 AM |

Hi,

Can any body kelp me to short out the following problem.

I want call WCF method within forloop. But first one after completed the second one call. 

 private void btnCreate_Click(object sender, RoutedEventArgs e)
{
     string BASE_DIR_PATH = "C:\Test\";
     string strFileName = string.Empty;
     for (int i=0; i < lstFiles.Count; i++)
     {
        strFileName = lstFiles[FileCount].Name;
        JewellWCFClient client = new JewellWCFClient();
        client.CreateCompleted += new EventHandler<CreateCropImageCompletedEventArgs>(client_CreateCropImageCompleted);
        client.CreateAsync(BASE_DIR_PATH, strFileName);
     }
}



protected void client_CreateCropImageCompleted(object sender, CreateCropImageCompletedEventArgs e)
{
     if (e.Result)
     {
    MessageBox.Show("All File Create...");
     }
}

i want second Async Method call after first one after completed. Means after call back.

Thanks,

Re: Call WCF Method in for loop

07-01-2009 8:51 AM |

Try this way.
- in your CreateCropImageCompleted method, update one class level variable say Counter when each call completed. and in this method, make async call until your Counter variable does not reach to specific value (in your case it is lstFiles.Count). When all completes, show the message box. Make sure you do all this before this code:

if(e.Result)

{

MessageBox.Show....

}

Re: Call WCF Method in for loop

07-02-2009 2:58 AM |

You can use concept of 'out' parameter where you can associate an out parameter with completed event which will identify the call in the loop.

Re: Call WCF Method in for loop

07-03-2009 6:21 AM |

 Hi Chandan,

You can try to refer below code the call the wcf in loop:
            ServiceReference1.Service1Client client = new autocomp.ServiceReference1.Service1Client();
            client.DoWorkCompleted += new EventHandler<autocomp.ServiceReference1.DoWorkCompletedEventArgs>(client_DoWorkCompleted);
           

           for (int i = 0; i < 3; i++)
            {
                client.DoWorkAsync();
            }

        void client_DoWorkCompleted(object sender, autocomp.ServiceReference1.DoWorkCompletedEventArgs e)
        {
            // to do....
        }

Re: Re: Call WCF Method in for loop

07-06-2009 1:22 AM |

 Hi Amanda,

Thanks for your reply.

Its not work for me i want to upload 2 files from WCF service call but after 1 upload completed 2nd file start. With your example the same file upload twice.

Thanks,

Chandan

Re: Re: Call WCF Method in for loop

07-06-2009 1:24 AM |

 Hi Jay,

Thanks for your reply. I know this solution. But i want some systemetic solution. Not any bypass solution.

Thanks.

Chandan