Feizal Amlani
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Feizal Amlani
asked on 03 Nov 2008, 04:35 PM
Hello,
I have a function to call a webservice method like so.
WS_Service.LookUp(myParam, Success, Failure);
In the WebService call I am throwing a Custom Exception and setting the Message property to a friendly message. For example, "You have an Invalid ID"
My Failure Javascript function does get excecuted. However, when I try to read the Message Property from the exception that was thrown, I have lost the friendly message that I have set in the origional call. There must be some kind of conversion going on and wondering how to send a Message Property back to the Failure function.
function Failure(objErr){
SetFriendlyMessage(objErr.message);
}
Thanks.
I have a function to call a webservice method like so.
WS_Service.LookUp(myParam, Success, Failure);
In the WebService call I am throwing a Custom Exception and setting the Message property to a friendly message. For example, "You have an Invalid ID"
My Failure Javascript function does get excecuted. However, when I try to read the Message Property from the exception that was thrown, I have lost the friendly message that I have set in the origional call. There must be some kind of conversion going on and wondering how to send a Message Property back to the Failure function.
function Failure(objErr){
SetFriendlyMessage(objErr.message);
}
Thanks.
1 Answer, 1 is accepted
0
Kevin Babcock
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answered on 04 Nov 2008, 03:28 PM
Hello Feizal,
In order to retrieve the exception message, you must invoke the object's get_message() function. Alternatively (and not considered a best practice), you can access the message value directly by calling error._message. Here is a simple example:
I hope this helps. Let me know if you have any further questions.
Sincerely,
Kevin Babcock
In order to retrieve the exception message, you must invoke the object's get_message() function. Alternatively (and not considered a best practice), you can access the message value directly by calling error._message. Here is a simple example:
| using System; | |
| namespace KevinBabcock.Examples | |
| { | |
| public class CustomException : Exception | |
| { | |
| public CustomException(string message) | |
| : base(message) | |
| { } | |
| } | |
| } | |
| using System; | |
| using System.ComponentModel; | |
| using System.Drawing.Design; | |
| using System.Web.Script.Services; | |
| using System.Web.Services; | |
| namespace KevinBabcock.Examples | |
| { | |
| [WebService(Namespace = "http://telerik.org/")] | |
| [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] | |
| [ToolboxItem(false)] | |
| [ScriptService] | |
| public class TestService : WebService | |
| { | |
| [WebMethod] | |
| public string GetData() | |
| { | |
| throw new CustomException("my custom exception"); | |
| } | |
| } | |
| } | |
| <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="KevinBabcock.Examples._Default" %> | |
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> | |
| <html xmlns="http://www.w3.org/1999/xhtml" > | |
| <head runat="server"> | |
| <title>Example - Web Service Error Callback</title> | |
| <script type="text/javascript"> | |
| function invokeService() { | |
| var service = new KevinBabcock.Examples.TestService(); | |
| service.GetData(onCompleted, onError); | |
| return false; | |
| } | |
| function onCompleted(result) { | |
| alert('Error. We should never reach this code.'); | |
| } | |
| function onError(error) { | |
| var message = error.get_message(); | |
| alert(message); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <form id="form1" runat="server"> | |
| <asp:ScriptManager ID="ScriptManager1" runat="server"> | |
| <Services> | |
| <asp:ServiceReference Path="~/TestService.asmx" /> | |
| </Services> | |
| </asp:ScriptManager> | |
| <asp:Button ID="Button1" runat="server" | |
| OnClientClick="return invokeService();" | |
| Text="Invoke Service" /> | |
| </form> | |
| </body> | |
| </html> | |
I hope this helps. Let me know if you have any further questions.
Sincerely,
Kevin Babcock