Sys.Net.WebServiceFailedException: The server method '' failed with the following error: RSS

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  eusebiu

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  Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 07, 2008 11:03 AM|LINK

   Hello...

  Let's say we have 2 time consuming functions, aaa and aaa1 inside a aspx page.

  [WebMethod]
          public static string aaa(int i)
          {
              Thread.Sleep(1000);
              return i.ToString();
          }
  
  
          [WebMethod]
          public static string aaa1(int i)
          {
              Thread.Sleep(1000);
              return i.ToString();
          }
  

   

   

  <div>
          <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true">
          </asp:ScriptManager>
          <span id="displayspan"></span>
          <br />
          <input type="button" value="click me" onclick="Stress()"/>
          <script language="javascript" type="text/javascript">
          function Stress()
          {
              for(var i = 0 ; i < 100 ; i++)
              {
                  PageMethods.aaa(i, function(res, ctrl){
                  document.getElementById('displayspan').innerHTML+=res.toString() + ' ';
                  });
              }
              
               for(var i = 0 ; i < 100 ; i++)
              {
                  PageMethods.aaa1(i, function(res, ctrl){
                  document.getElementById('displayspan').innerHTML+=res.toString() + ' ';
                  });
              }
          }
          </script>
      </div>

   The problem is that when I click on the button, I get an error: "Sys.Net.WebServiceFailedException: The server method '' failed with the following error:" .... and no error description

  Can someone tell me how to workaround this issue?

  Thanks

  P.S. In Firefox 2.0.0.16 this code works....

  ajax WebServiceFailedException

  Happy coding!
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  itsumapathyk

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  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 07, 2008 11:09 AM|LINK

  www.codeplex.com/phpmsajax/WorkItem/View.aspx?WorkItemId=4997

  dotnetforum.lk/forums/p/8954/31273.aspx

  forums.microsoft.com/MSDN/ShowPost.aspx?PostID=3592022&SiteID=1

  Thanks and Regards,
  www.CodeCollege.NET,www.interviewsguru.com,The Encyclopedia of Sites ,www.thekumbakonam.com
  
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  eusebiu

  Member

  137 Points

  80 Posts

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 07, 2008 11:18 AM|LINK

  I've already read thouse posts... but no solution. BTW... I know how to search on Google...

  Anybody else?

  Happy coding!
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  daveyboy79

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  1 Post

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 07, 2008 03:31 PM|LINK

   

  Hi,

  If you attach the debugger, you may find that the code is breaking in the proxy class somewhere like this:

              if (((statusCode < 200) || (statusCode >= 300)) || errorObj) {
                  if (onFailure) {
                      if (!result || !errorObj) {
                          result = new Sys.Net.WebServiceError(false /*timedout*/, String.format(Sys.Res.webServiceFailedNoMsg, methodName), "", "");
                      }
                      result._statusCode = statusCode;
                      onFailure(result, userContext, methodName);
                  }
                  else {
                      // In debug mode, if no error was registered, display some trace information
                      var error;
                      if (result && errorObj) {
                          // If we got a result, we're likely dealing with an error in the method itself
                          error = result.get_exceptionType() + "-- " + result.get_message();
                      }
                      else {
                          // Otherwise, it's probably a 'top-level' error, in which case we dump the
                          // whole response in the trace
                          error = response.get_responseData();
                      }
                      // DevDiv 89485: throw, not alert()
  

  <div style="background-color: yellow;">                    throw Sys.Net.WebServiceProxy._createFailedError(methodName, String.format(Sys.Res.webServiceFailed, methodName, error));</div>
                  }
              }

   the variable statusCode at the top of the code block is holding a HTTP Response code, in my case 404. 

   

  This function is the callback assigned to handle the async response.  Directly above this function is the calling function that launches the async postback to the web service.  I put a breakpoint on the line:

   

      var e = Function._validateParams(arguments, [
          {name: "servicePath", type: String},
          {name: "methodName", type: String},
          {name: "useGet", type: Boolean, optional: true},
          {name: "params", mayBeNull: true, optional: true},
          {name: "onSuccess", type: Function, mayBeNull: true, optional: true},
          {name: "onFailure", type: Function, mayBeNull: true, optional: true},
          {name: "userContext", mayBeNull: true, optional: true},
          {name: "timeout", type: Number, optional: true}
      ]);
  

  <div style="background-color: yellow;">    if (e) throw e;</div>

   

  and had a look at the arguments object.  In my case, I'm not passing in the correct reference to the web service.  It's mapping "localhost/Webservice" to "/WebService" which is not the same thing as the web service is running on a different IIS directory.

  This may not be an answer, but it may help in finding the problem.

  Regards,

  David E
  

   

   

   

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  eusebiu

  Member

  137 Points

  80 Posts

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 07, 2008 03:47 PM|LINK

  Hello...

  I've been watching the parameters and the servicePath is "/WebApplication1/Default.aspx", method name is "aaa" and params is "9"...

  I think it's there's limit of requests that haven't been answered yet... because if I remove the Thread.Sleep(1000) method, it works fine.

  Happy coding!
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  eusebiu

  Member

  137 Points

  80 Posts

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 09, 2008 07:52 AM|LINK

  On VS TS 2008 the exception isn't raised... only in VS 2008 Professional Edition.... and I wonder why...

  Happy coding!
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  tjrobinson.net

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  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Dec 24, 2008 05:06 PM|LINK

   I recently had the same error message and managed to solve it by adding a missing callback failure method parameter. I've posted it to my blog but I've also pasted the main contents below for convenience:

   

  This posting may help if you get an error message similar to the following when using Microsoft ASP.NET AJAX and PageMethods to call server-side code via JavaScript but only in Firefox (3 in my case), not in Internet Explorer:

  The server method "MyServerMethod" failed with the following error: <no errors shown>

  There are various mentions of the above message with specific error messages but what makes the above unique is that no errors are listed, making it difficult to trace the source of the problem. After a bit of debugging and some experimentation I discovered that I was missing the parameter defining the failure callback method:

  Before:

  PageMethods.MyServerMethod(PARAM1, PARAM2, PARAMn, callerMethod_Success); 

  After:

  PageMethods.MyServerMethod(PARAM1, PARAM2, PARAMn, callerMethod_Success, callerMethod_Failure);
  

  function callMethod_Failure(errors, userContext, methodName) {
  alert(errors.get_Message());
  }
  

  Unlike C#, JavaScript doesn't make all parameters mandatory so a missing parameter wasn't something I was used to looking out for! This combined with the different behaviour in the JavaScript engines of Internet Explorer and Firefox made this a tricky bug to solve.

  asp.net 2.0 ajax pagemethods javascript firefox callback error

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  leosuaar

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  4 Posts

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Aug 20, 2010 09:19 PM|LINK

  I am not sure, but I remember that error; the problem could be in next line:
  

  <input type="button" value="click me" onclick="Stress()"/>
  
  Try this:
  
  <input type="button" value="click me" onclick="Stress(); return false"/>
  
  or
  
  <input type="button" value="click me" onclick="return Stress()"/>
   And make Stress() function return always false value.
  
  

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  xmen

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  207 Posts

  Re: Sys.Net.WebServiceFailedException: The server method '' failed with the following error:

  Nov 03, 2010 02:28 AM|LINK

  Well, this is 2 years old question but you must handle onFailed event as well to avoid that crash.

  
  

  something like this

  
  

  PageMethods.aaa(i,

  function(res, ctrl){
  document.getElementById('displayspan').innerHTML+=res.toString() + ' ';
    },

  function(err){ } //leave it empty if you dont want to show error else use err.get_message()

  ); 

  
  C# Programmer