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[1.2] DirectMethod.request, webservice and success/failure

  1. #1
    Nov 26, 2011, 3:08 PM

    [1.2] DirectMethod.request, webservice and success/failure

    Hi

    I have implemented DirectMethod to call a webservice in order to validate soecfic edits in a gridpanel
    It is working well, I just wonder if there is any way I can make use of the failure in case the validation comes out with "not valid"?

    My implemtation is more or less a copy of the this example
    https://examples1.ext.net/#/Events/D...ds/WebService/

    I'd like to return a failure response if possible, but how?
    Otherwise I will extend my success response and extend my javascript invoked in case of a "success"

    Thanks in advance /Peter
  2. #2
    Nov 28, 2011, 5:10 AM
    Hi,

    Please just set up "success = false" in a response's root.

    Example Page
    <%@ Page Language="C#" %>

<%@ Register Assembly="Ext.Net" Namespace="Ext.Net" TagPrefix="ext" %>

<!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>Ext.Net Example</title>

    <script type="text/javascript">
        var onClick = function (method) {
            Ext.net.DirectMethod.request({
                url          : "WebService1.asmx/" + method,
                cleanRequest : true,
                json         : true,
                success      : function (result) {
                    alert("success");
                },
                failure      : function (result) {
                    alert("failure");
                }
            });
        };
    </script>
</head>
<body>
    <form runat="server">
        <ext:ResourceManager runat="server" />
        <ext:Button runat="server" Text="Success">
            <Listeners>
                <Click Handler="onClick('Success');" />
            </Listeners>
        </ext:Button>
        <ext:Button runat="server" Text="Failure">
            <Listeners>
                <Click Handler="onClick('Failure');" />
            </Listeners>
        </ext:Button>
    </form>
</body>
</html>
    Example WebService
    using System.Web.Services;
using Ext.Net;
using System.Web.Script.Services;

namespace Work
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [ScriptService]
    public class WebService1 : WebService
    {
        [WebMethod]
        public object Success()
        {
            return new { data = new { Test = "Hello World!" }, success = true };
        }

        [WebMethod]
        public object Failure()
        {
            return new { data = new { Test = "Hello World!" }, success = false };
        }
    }
}
  3. #3
    Nov 28, 2011, 6:28 AM
    Thanks Daniil

    - Peter
  4. #4
    Nov 28, 2011, 7:31 PM
    Quote Originally Posted by Daniil View Post
    Please just set up "success = false" in a response's root.
    Ups I have a problem with my failure function

    Add console.log to the javascript and run the sample in Chrome, when failure is called (setting succes eq false) the result parameter is "undefined"
    I need to return a message to the user from my webmethod 

    <script type="text/javascript">    var onClick = function (method) {
        Ext.net.DirectMethod.request({
            url          : "WebService1.asmx/" + method,
            cleanRequest : true,
            json         : true,
            success      : function (result) {
                console.log(result);
                alert("success");
            },
            failure      : function (result) {
                console.log(result);
                alert("failure");
            }
        });
    };
    Thanks /Peter
  5. #5
    Nov 29, 2011, 6:33 AM
    The first argument is an error message.
    Ext.net.DirectMethod.request({
    url          : "WebService1.asmx/" + method,
    cleanRequest : true,
    json         : true,
    success      : function (result) {
        alert("success");
    },
    failure      : function (errorMessage, response, extraParams, o) {
        alert(errorMessage);
    }
});

[WebMethod]
public object Failure()
{
    return new { errorMessage = "some error", success = false };
}
  6. #6
    Nov 29, 2011, 6:49 AM
    Working like a charm

    Hmm I need to dig in to this ExtJS stuff some more
    From time to time it's like a impenetrable black box :-)

    rgds /Peter
  7. #7
    Nov 29, 2011, 7:03 AM
    In this case it's Ext.Net stuff:)

    The debug mode should help you much: VS + "debugger" in JavaScript code.

    Example
    failure      : function () {
    debugger;
}
    Then a pair of F10 and you are in the Ext.Net scripts, where you will see the failure handler's arguments.
  8. #8
    Nov 29, 2011, 7:07 AM
    Also I'm curious why you are still not a premium member:)

    It would be great to see such intelligent person on the Premium Help forum:)

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