the server method '' failed

[Ekjot]

Hello

I am using a web service like the demo to populate the items in the RadComboBox on demand. This is all working find when i am running the program through VS2010 but is failing when I try through IIS.

Also it works for Http and does not work for Https so I think the solution lies there somewhere. 

Here is my .aspx:

<telerik:RadComboBox AutoPostBack="true" ID="txtGelPackProdCode" runat="server" EnableLoadOnDemand="true" ShowMoreResultsBox="true" EnableVirtualScrolling="true" EmptyMessage="Enter here..." onselectedindexchanged="txtGelPackProdCode_SelectedIndexChanged">
<WebServiceSettings Path="MasterFormulaWebService.svc" Method="LoadProductData" />
</telerik:RadComboBox>

this is the svc method:

public RadComboBoxData LoadProductData(RadComboBoxContext context)
       {
           string text = context.Text.Trim() + '%';

           DataTable data = ProductDAO.ViewData2(text, "RadCombo");

           List<RadComboBoxItemData> result = new List<RadComboBoxItemData>(context.NumberOfItems);
           RadComboBoxData comboData = new RadComboBoxData();

           try
           {
               int itemsPerRequest = 10;
               int itemOffset = context.NumberOfItems;
               int endOffset = itemOffset + itemsPerRequest;
               if (endOffset > data.Rows.Count)
               {
                   endOffset = data.Rows.Count;
               }
               if (endOffset == data.Rows.Count)
               {
                   comboData.EndOfItems = true;
               }
               else
               {
                   comboData.EndOfItems = false;
               }
               result = new List<RadComboBoxItemData>(endOffset - itemOffset);
               for (int i = itemOffset; i < endOffset; i++)
               {
                   RadComboBoxItemData itemData = new RadComboBoxItemData();
                   itemData.Text = data.Rows[i]["prod_code"].ToString().Trim();
                   itemData.Value = data.Rows[i]["name"].ToString().Trim();
                   result.Add(itemData);
               }
               if (data.Rows.Count > 0)
               {
                   comboData.Message = String.Format("Items <b>1</b>-<b>{0}</b> out of <b>{1}</b>", endOffset.ToString(), data.Rows.Count.ToString());
               }
               else
               {
                   comboData.Message = "No matches";
               }
           }
           catch (Exception e)
           {
               comboData.Message = e.Message;
           }
           comboData.Items = result.ToArray();
           return comboData;
       }

and this is the webconfig:

<system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
      </endpointBehaviors>
    </behaviors>
      <serviceHostingEnvironment aspNetCompatibilityEnabled="true"
        multipleSiteBindingsEnabled="true"


      />

    <services>
      <service name="Reena.Master.MasterFormulaWebService">
        <endpoint address="" behaviorConfiguration="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior"
          binding="webHttpBinding" contract="Reena.Master.MasterFormulaWebService" />
      </service>
    </services>
      <bindings>
          <webHttpBinding>
              <binding name="webBinding">
                  <security mode="None">
                  </security>
              </binding>
          </webHttpBinding>
      </bindings>
  </system.serviceModel>

What am I doing wrong? Thanks

[Dimitar Terziev]

Hi,

Probably the problem is caused by an authentication issue In general the web service consumed by the RadComboBox should allow anonymous access. Please try to add the following lines to your web config file:

<location path="Reena.Master.MasterFormulaWebService.svc">
    <system.web>
        <authorization>
            <allow users="*" />
        </authorization>
    </system.web>
</location>

Regards,
Dimitar Terziev
the Telerik team

[Ekjot]

Hi!

Thanks for the reply. I tried this and it still causes the error. Any other suggestions?

[Dimitar Terziev]

Hi,

After inspecting the code snippet from your web config file I've noticed that you are missing a setting in your service configuration:

<service name="Reena.Master.MasterFormulaWebService">
        <endpoint address="" behaviorConfiguration="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior"
          binding="webHttpBinding" contract="Reena.Master.MasterFormulaWebService" />
        <endpoint address="" behaviorConfiguration="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior"
                binding="webHttpBinding" bindingConfiguration="secureBinding contract="Reena.Master.MasterFormulaWebService" />
      </service>

Please add the above suggested setting to your configuration and let us know of the results.

Greetings,
Dimitar Terziev
the Telerik team

[Ekjot]

I added the lines you asked in the Web.Config and it is still giving me that error. Http stopped working too now when I added that line :/. 

<system.serviceModel>
    <behaviors>
      <endpointBehaviors>
        <behavior name="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior">
          <enableWebScript />
        </behavior>
      </endpointBehaviors>
    </behaviors>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />

    <services>
      <service name="Reena.Master.MasterFormulaWebService">
        <endpoint address="" behaviorConfiguration="Reena.Master.MasterFormulaWebServiceAspNetAjaxBehavior" binding="webHttpBinding" bindingConfiguration="secureBinding" contract="Reena.Master.MasterFormulaWebService" />
      </service>
    </services>
    <bindings>
      <webHttpBinding>
        <binding name="webBinding">
          <security mode="None">
          </security>
        </binding>
      </webHttpBinding>
    </bindings>
  </system.serviceModel>
</configuration>

[Cat Cheshire]

You can try the configuration settings described in this article:
http://www.telerik.com/help/aspnet-ajax/combobox-load-on-demand-wcf-service.html

[Tad]

I realize this thread is very old, but I have run into very similar problems with "Server Methox X failed", and found a workaround.

I discovered that the problem was related to having multiple address bindings on the same web site on the server (e.g. www.mydomain.com and mydomain.com bound to the same site).

I worked around the problem (kludgey, but it worked) by replicating the web site in IIS for each binding, so that each site was only bound once (but each pointing to the same code directory).

Forgive me if this has already been reported elsewhere on this support site, but I never found it.  Not sure what the problem in IIS is, or why it was throwing an error, but this workaround got me back in business.

--Tad 

[Dimitar Terziev]

Hi Tad,

The reason for this problem with the web service invocation is indeed related to the settings defined in the web config file as well as the IIS settings. Thank you for sharing your solution with the community.

Regards,
Dimitar Terziev
the Telerik team

[Scott]

Could you please expand on the statement "is indeed related to settings defined in the web.config file as well as IIS settings"?  I am experiencing the same issue and if this is related to settings, could you please tell us :

1. Which settings in the web.config and IIS you are referring to

2. If this is caused by configuration settings, is there an alternative set of settings that would prevent this?