Vishwamohan

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Implementing WCF Service Part 6 – Using Fault @ Client

Ok, so you have developed a nice WCF Service with proper implementation of custom fault exception handling, now you want to call this service in a web application or other client application and catch the fault exception in your client code. For simplicity I am using a web page, the following code is self explanatory.

  1: Protected Sub btnGetCustomers_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnGetCustomers.Click
  2: 
  3:         Using wcfSrv As CustomerWcfService.CustomerServiceClient = New CustomerWcfService.CustomerServiceClient("WSHttpBinding_ICustomerService")
  4:             Try
  5:                 Dim custArr() As CustomerWcfService.Customer
  6:                 custArr = wcfSrv.GetCustomers()
  7:                 For Each cust As CustomerWcfService.Customer In custArr
  8:                     Response.Write("ID: " & cust.ID.ToString & " Name: " & cust.Name & "<br/>")
  9:                 Next
 10:                 lblStatus.Text = "No of Customer Records found: " & custArr.Length.ToString
 11: 
 12:                 'Custom Fault Exception Response from Service
 13:             Catch ex As ServiceModel.FaultException(Of CustomerWcfService.ErrorResponse)
 14:                 lblStatus.Text = "Code:" & ex.Detail.Code.ToString() & " Messgage:" & ex.Detail.Message & " Details:" & ex.Detail.Details
 15:                 wcfSrv.Abort()
 16: 
 17:                 'General Fault Exception
 18:             Catch ex As ServiceModel.FaultException
 19:                 lblStatus.Text = ex.ToString()
 20:                 wcfSrv.Abort() 
 21: 
 22:                 'General Exception
 23:             Catch exp As System.Exception
 24:                 lblStatus.Text = "Error:" & exp.ToString()
 25:                 wcfSrv.Abort()
 26: 
 27:             Finally
 28:                 wcfSrv.Close()
 29:             End Try
 30: 
 31:         End Using
 32: 
 33:     End Sub
 34: 

Comments (2) -

  • jameschowdare

    11/23/2009 10:48:19 PM | Reply

    hi viswa,

    how to we implement wcf in 3 tier, and where do we implement it,

    give a desription or give simple 3 method(each tier have implement one method)



    thiswil help us/lot of learner/developers

  • Christopher Livingstone

    3/27/2010 5:40:50 PM | Reply

    I have read a few of the articles on your website now, and I really like your style of blogging. I added it to my favorites site list and will be checking back soon. Please check out my site as well and let me know what you think.

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