Calling a WebService in another website on the same domain (Solved)

Hi all.

I'd been messing about with Atlas this week and after some banging of head against wall managed to get the basics working. I then found myself wanting to build a modular application consisting of multiple web services, but was getting no joy calling web servies in external solutions (projects) - I had the usual stuff reported in Fiddler suggesting I add [WebOperationAttribute(true, ResponseFormatMode.Json, true)] to my web method.

Not having done any webservice coding before this was all a bit bewildering but with some persistence I managed to get it all working.

If anyone else is having trouble here's what you do:

1) Make sure your remote web service is also an Atlas application.

2) In the Web.Config file of the remote webservice add the following under the <system.web> section:

<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" type="Microsoft.Web.Services.ScriptHandlerFactory" validate="false"/>
<add verb="*" path="iframecall.axd" type="Microsoft.Web.Services.IFrameHandler" validate="false"/>
</httpHandlers>

3) In your WebService class file include a reference to the Microsoft.Web.Services namespace:

Imports Microsoft.Web.Services

4) On your WebMethod add the following WebOperationAttribute:

<WebOperationAttribute(True, ResponseFormatMode.Json, True)>

So, it should look like:

<WebMethod()> _
<WebOperationAttribute(True, ResponseFormatMode.Json, True)> _
Public Function HelloWorld(ByVal strValue As String) As String
Return strValue
End Function

(some examples I found (including that of Fiddler I think) had square brackets surrounding the WebOperationAttribute which confused the issue)

5) In your calling application, reference the remote service as follows:

<atlas:ScriptManager ID="ScriptManager1" runat="server">
<Services>
<atlas:ServiceReference Path="http://localhost/AtlasTest2/Test.asmx" />
</Services>
</atlas:ScriptManager>

...and that should work.

Hope this helps. Any comments/suggestions welcome.

Ben

Hi Ben,

In theory, you should not have to go through the iframehandler if your other web service is in the same domain. Try simply havingpath="/AtlasTest2/Test.asmx" without thehttp://localhost part.

The reason you saw square brackets in some samples is that it is the C# syntax for attributes, while you're using VB.

David

CallBack Fails

In my website I had a callback function that works perfectly fine, but sometimes it fails and doesn't work.

I am not getting the point of failure. Is there any reason for callback failing.

Please post the code, callbacks can fail when you register the same call back function somewhere else, also remember that every control in that page will received the callback.

Call web service by Javascript in Logon.aspx

I used FormsAuthentication in my ajax-enabled website. Now I wanna call web service (in website) on client-side in Logon.aspx. But I always got an error that is like:

"WebService1" is undifined. (WebService1 is class name in the webservice)

I guess that's because ScriptManager will initialize webservice only after FormsAuthentication. Is this true? I can call webservice client-side in another aspx page.

If no any way for this, I have to give up FormsAuthentication.

Could you show us your code / markup?

You need to authorize anonymous users to access the web service. This can be done in many ways. The easiest way is to add an entry to the web.config file:

<location path="WebService1.asmx">
<system.web>
<authorization>
<allow users="?"/>
</authorization>
</system.web>
</location>

Thank you, Rama. It works.

Call Remote WebService. "Parameter count mismatch" Error

Hello All, I.m using AJAX for call remote WS. For example WS placed on localhost.

1) Here some web methods from WS (AJAXBridgeService WebSite)

  
 [WebMethod]
public string HelloWorld()
 {
return"Hello World";
 }
 [WebMethod]
public Account GetAccountByID(int ID)
 {
return new Account();
 }
 [WebMethod]
public string GetStringByID(int ID)
 {
return ID.ToString();
 }
 [WebMethod]
public int GetIntByID(int ID)
 {
return ID;
 }
 

  2) i generated proxy class with wsdl utility and place it in App_Code (AJAXBridge WebSite) 
 3) i created asbx file
<bridge namespace="AJAXTest" className="Class">
<!-- change url to required --> <proxy type="AJAXTest.Service, App_Code"
 serviceUrl="http://localhost/AjaxBridgeService/Service.asmx" /
 <method name="HelloWorld"/
 <method name="GetAccountByID">
 <input>
 <parameter name="ID"/>
 </input>
 </method
 <method name="GetStringByID">
 <input>
 <parameter name="ID"/>
 </input>
 </method
 <method name="GetIntByID">
 <input>
 <parameter name="ID"/>
 </input>
 </method>
</bridge>
 
4) then i used the following HTML+JS code 
<asp:ScriptManager ID="PageScriptManager"
 runat="server"
 LoadScriptsBeforeUI="False"
 EnablePartialRendering="True">
 <Services>
 <asp:ServiceReference Path="bridges/bridge.asbx" />
 </Services
 <Scripts>
 <asp:ScriptReference Path="bridge.js" />
 </Scripts>
 </asp:ScriptManager
 <a href="javascript:void(0);" onclick="javascript:Click1();">Click Me 1</a> <span id="span1"></span>
 <br/>
 <a href="javascript:void(0);" onclick="javascript:Click2();">Click Me 2</a> <span id="span2"></span>
 <br/>
 <a href="javascript:void(0);" onclick="javascript:Click3();">Click Me 3</a> <span id="span3"></span
JS:
function Click1()
{
 AJAXTest.Class.HelloWorld({}, OnComplete1, onError1);
}
function OnComplete1(obj)
{
 var span = $get('span1');
 span.innerHTML = obj;
}
function onError1(obj)
{
 var span = $get('span1');
 span.innerHTML = "Error:" + obj.get_message;
}
function Click2()
{
 AJAXTest.Class.GetAccountByID({"ID" : 1}, OnComplete2, onError2);
}
function OnComplete2(obj)
{
 var span = $get('span2');
 span.innerHTML = obj;
}
function onError2(obj)
{
 var span = $get('span2');
 span.innerHTML = "Error:" + obj.get_message();
}
function Click3()
{
 AJAXTest.Class.GetStringByID({"ID" : 100}, OnComplete3, onError3);
}
function OnComplete3(obj)
{
 var span = $get('span3');
 span.innerHTML = obj;
}
function onError3(obj)
{
 var span = $get('span3');
 span.innerHTML = "Error:" + obj.get_message();
}
 
5) After press "Click Me 1" link, i invoke HelloWorld and it returned string value to span,
then if i press "Click Me 2" or "Click Me 3"links, i got OnError and error message with "Parameter count mismacth".
There is a topic like thishttp://forums.asp.net/t/1136077.aspx
Does have anybody any information about call bridge with parameters? 
 
 
 
 
 
 
  

You may remove the jason-styled parameters.

In your javascript service invocation you may send the number only before the callbacks at this syntax:

AJAXTest.Class.GetAccountByID(1, OnComplete2, onError2);
(instead of AJAXTest.Class.GetAccountByID({"ID" : 1}, OnComplete2, onError2); )

Note: Don't send date this form, (you may send string instead and parse it on server side)

Vinija:

You may remove the jason-styled parameters.

In your javascript service invocation you may send the number only before the callbacks at this syntax:

? AJAXTest.Class.GetAccountByID(1, OnComplete2, onError2);
(instead of? AJAXTest.Class.GetAccountByID({"ID" : 1}, OnComplete2, onError2); )

Note: Don't send date this form, (you may send string instead and parse it on server side)

?

There we call remote web service via bridges technology, which demand of JSON input parameter.

I'm mot realy familiar with JSON syntax but according to the article you've referenced to, it seems that
you shouldn't write ID in quotation marks but simply write the word ID.

I'm not sure if it'll help you (you may have tried it already) but this is what I can see that by be wrong.

About the JSON input parameter, shouldn't the AJAX engine imlement the JSON serialization without
you actually write the parameters JSON styled?

<method name="HelloWorld"/
<method name="GetAccountByID">
<input>
<parameter name="ID"/> see here ...the parameter name is the same for all !!!has it got to be different?try and see it does not knw which parameter to invoke when clicked ,probably this might be an error
</input>
</method
<method name="GetStringByID">
<input>
<parameter name="ID"/>
</input>
</method
<method name="GetIntByID">
<input>
<parameter name="ID"/>
</input>
</method>
</bridge>

cheers

shankar

CalendarExtender wont display the calendar.

Hello,

I have been trying to get the CalendarExtender control to work in one of my pages work several days now. I used the sample website in the toolkit as a guide. The Calendar.aspx page in the sample website works fine if I add it to my project but when I try to use the extender on one of my pages I get a Javascript error when I click on the textbox that I have attached to the extender. The error reads:

Line: 548

Char: 13

Error: 'this._popupBehavior' is null or is not an object

If anyone out there cares, I found the problem. It would seem that a different datepicker control that I was using had a conflict with the CalendarExtender. I had been using Basic Date Picker Lite because it was the best FREE control that acted like I wanted it to. Once I removed the other control the CalendarExtender worked like a champ. The CalendarExtender even offers me more flexibility than BDPLite. Anyway, I hope that my suffering means that someone else won't have to.