ASP.NET Web.config CustomErrors not working for the webservice

Question

I have a simple webservice with two webmethods.

https://localhost/Sub/WS/Dash.asmx/test_error_methodnameXXXXXXXXXXX

When i call the above request from the browser. It gives me a error message saying something like this:-

System.InvalidOperationException: test_error_methodnameXXXXXXXXXXX Web Service method name is not valid. at System.Web.Services.Protocols.HttpServerProtocol.Initialize() at System.Web.Services.Protocols.ServerProtocolFactory.Create(Type type, HttpContext context, HttpRequest request, HttpResponse response, Boolean& abortProcessing)

I tried to make a work around with the help of web.config file as follows:-

<system.web>    
    <customErrors mode="On" defaultRedirect="~/Sub/ErrorPage/AppErrors.aspx">
       <error statusCode="500" redirect="500.aspx" />
    </customErrors>       
</system.web>

Here in this case, the redirection is not happening to the 500.aspx page or the AppErrors.aspx. I can see the change happening, if i change the value in the mode attribute..

Thanks.

Karan · Accepted Answer · 2012-09-05 07:35:11Z

2

I found the fix with the help of web.config.

Stick

<diagnostics suppressReturningExceptions="true"/>

answered Sep 5, 2012 at 7:35

Karan

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1 Comment

Matt123 Over a year ago

Is there a way to either change what this error says or redirect it to a different page? This currently gives me a blank page that just says "An error occurred on the server." I would like to redirect that to a custom error page if possible.

nunespascal · Accepted Answer · 2012-08-28 09:04:13Z

0

To call web methods for javascript you should mark your webservice as a script service.

[ScriptService]
public class MyService : WebService
{

}

Include a reference to it in script manager:

<asp:ScriptManager ID="_scriptManager" runat="server">
  <Services>
    <asp:ServiceReference Path="Dash.asmx" />
  </Services>
</asp:ScriptManager>

Call it in js

try {
    Dash.MyService.ErrorMethodName();
}
catch(exception){
    //handle exception
}
finally {
    //round up
}

edited Aug 28, 2012 at 9:04

answered Aug 28, 2012 at 8:07

nunespascal

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7 Comments

Karan Over a year ago

It is already marked as scriptservice. That is fine. The problem i am facing is the handling of the InvalidOperationException message, when someone call the webservice method directly from the browser location bar..

nunespascal Over a year ago

the javascript try catch will help you there

Karan Over a year ago

But this thing is not called from client side... I want to make this change to give the appropriate message and thus to prevent the content spoofing from the malicious user. test_error_methodnameXXXXXXXXXXX does not exist in the web-service.

Karan Over a year ago

I tried with the help of web.config CustomErrors, but the redirection is not happening..

nunespascal Over a year ago

Redirection will not happen automatically, in case you detect an error in javascript, you will have to redirect yourself, by setting the location.href = CUSTOM_ERROR_URL

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