webservice/web method not getting called from jquery

Question

1.00/5 (1 vote)

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whats the problem in this webmethod/webservice call

JavaScript

$.ajax({
type: "GET",
url: "jquerygrid.aspx/GetCustomers",
dataType: "json",
success: function(resp){
// we have the response
alert("Server said123:\n '" + resp+ "'");
},
error: function(e){
alert('Error121212: ' + e);
}
});

GetCustomers is name of my method in jquerygrid.aspx page.
i also tried to call a webservice method like autocomplete.asmx/getcustomers.

Following is my webmethod

[System.Web.Services.WebMethod]
        [ScriptMethod(UseHttpGet = true, ResponseFormat = ResponseFormat.Json)]
        public static string GetCustomers()
        {
            string query = "SELECT * FROM table";
            SqlCommand cmd = new SqlCommand(query);

            // Populate the DataSet.
            DataSet data = GetData(cmd);
            string strjson = GetJson(data.Tables[0]);
            return strjson;
        }

Posted 14-Jan-14 20:10pm

pwavell

Updated 14-Jan-14 20:20pm

JoCodes

v5

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Comments

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Jan-14 2:15am

Do you see any Errors in Developer Tool's console?

pwavell 15-Jan-14 2:38am

alert box with Error [object Object]

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Jan-14 2:42am

So, is it going inside Success or Error?

pwavell 15-Jan-14 2:44am

Error

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Jan-14 3:23am

Are you sure that the jQuery code is in jquerygrid.aspx and GetCustomers is present in its code behind?

pwavell 15-Jan-14 3:51am

yes

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 15-Jan-14 5:01am

Okay. Check Using jQuery to directly call ASP.NET AJAX page methods[^] and make sure you are doing it correctly.

And yes, always hit "Reply" button inside the Comment box to reply me. Adding one comment by clicking on "Have a Question or Comment" won't notify me.

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er.rakesh · Answer 1 · 2014-01-14T22:02:00

jquery call :

JavaScript

$.ajax({
    type: 'POST',
    url: 'AddProgressBar.aspx/GetUpdateStatus',
    cache: false,
    async: true,
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function (response, type, xhr) {
         var retVal = JSON.stringify(response);
        alert("hiiiiiiiii");
//                            alert(response.d);
        window.alert(JSON.parse(retVal).GetJSONDataResult);
    },
    error: function (xhr) {
        window.alert('error: ' + xhr.statusText);
    }
});

cs file ::

C#

[WebMethod]
[WebInvoke(Method = "GET", BodyStyle = WebMessageBodyStyle.Wrapped, ResponseFormat = WebMessageFormat.Json, UriTemplate = "json")]
public static string GetUpdateStatus()
{
    return GetUserAddStatus();
}

Kornfeld Eliyahu Peter · Answer 2 · 2014-01-14T21:46:00

Solution 3

You have to add this line to you ajax call

JavaScript

contentType: 'application/json; charset=utf-8',

(Just after dataType...)

Posted 14-Jan-14 21:46pm

Kornfeld Eliyahu Peter

Sandeep Singh Shekhawat · Answer 3 · 2014-01-14T20:42:00

Solution 2

Add async:false to your ajax method and make sure your your calling page and service method page in same directory.

Add also following code in ajax method

data: "{}",

contentType: "application/json; charset=utf-8",

type: "POST",

Posted 14-Jan-14 20:42pm

Sandeep Singh Shekhawat

Comments

pwavell 15-Jan-14 2:48am

still going into error block.(Error [object Object])

Sandeep Singh Shekhawat 15-Jan-14 2:54am

Is Your web service method not hitting?

pwavell 15-Jan-14 3:00am

yes.cant debug my webmethod.

Sandeep Singh Shekhawat 15-Jan-14 3:22am

Your are using UseHttpGet = true in web Methdod so please use type: "Get", in jQuery Ajax method.

pwavell 15-Jan-14 3:55am

Now i am able to debug my web method but its alert is giving me [object Object] but not data.

Sandeep Singh Shekhawat 15-Jan-14 3:59am

I am glad to know that we are on progress. Do you chacek what is in variable strjson. Just use fiddler tool and find what formet you get in object and access the object property to get actual data.

Sandeep Singh Shekhawat 15-Jan-14 4:00am

Can you please tell me that why my answer is downvoted?

JoCodes · Answer 4 · 2014-01-14T20:27:00

Solution 1

Add data attribute and change type to Post in the jquery ajax call

Posted 14-Jan-14 20:27pm

JoCodes

Comments

pwavell 15-Jan-14 2:53am

using this:=
$.ajax({
type: "Post",
url: "jquerygrid.aspx/GetCustomers",
dataType: "json",
data: "{}",
async:false,
contentType: "application/json; charset=utf-8",
success: function (response) { // we have the response
alert(response);
},
error: function(e){
alert('Error121212: ' + e);
}
});
still giving error

JoCodes 15-Jan-14 3:56am

when ajax call parameter type:post then in the webmethod use UseHttpGet = false.

webservice/web method not getting called from jquery

4 solutions

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