ajax enabled WCF Service

Question

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Friends,

I using the below code for deleting the list from three tables(Deleting Perfectly!). It will take hardly 10 seconds for deleting.

Here, I want to show please wait image for these waiting time..
It will show when starting the process and hide on delete process completed

JavaScript

$(document).ready(function () {
               $.ajax({
                        cache: false,
                        async: true,
                        type: "GET",
                        dataType: "json",   
                        url: "../Services/MasterServices.svc/DeleteList",
                        data: { name: vatid },
                        contentType: "application/json;charset=utf-8",
                        success: function (r) {
                            if (r != null) {
                                alert("Removed Successfully");
                            }
                        },
                        error: function (e) { alert(e.statusText); }

                    });
                });

Any help!!!

Thanks,
Karthik.J

Posted 22-Nov-12 1:06am

Karthik J, Coimbatore

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2 solutions

Solution 1

You need to add ajaxStart() method to your code. Within this method, you can have any type of loading indicator, or changing the screens transparency etc...

JavaScript

$("yourDivOrAnyControl").ajaxStart(function(){
  $(this).html("<img src="loadingImage.gif" />");
});

So, final code would look something like,

JavaScript

$(document).ready(function () {
       $("yourDivOrAnyControl").ajaxStart(function(){
            $(this).html("<img src="loadingImage.gif" />");
       });

       $.ajax({
                cache: false,
                async: true,
                type: "GET",
                dataType: "json",   
                url: "../Services/MasterServices.svc/DeleteList",
                data: { name: vatid },
                contentType: "application/json;charset=utf-8",
                success: function (r) {
                    if (r != null) {
                        alert("Removed Successfully");
                    }
                },
                error: function (e) { alert(e.statusText); }

              });
});

For more information please see this link
http://api.jquery.com/ajaxStart/[^]

Posted 22-Nov-12 4:43am

pramod.hegde

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Karthik J, Coimbatore · Accepted Answer · 2012-11-22T22:19:00

HTML

<span id="ajax_loading_div" style="display: inline-block;<br mode=" hold=" />    width: 150px;"></span>

JavaScript

<script type="text/javascript" language="javascript">
$(document).ready(function () {
                    $("#ajax_loading_div").addClass("loading");
                    $.ajax({
                        cache: false,
                        async: true,
                        type: "GET",
                        dataType: "json",
                        url: "../Services/FinMasterServices.svc/DeleteListCompany",
                        data: { name: vatid },

                        contentType: "application/json;charset=utf-8",
                        success: function (r) {
                            $("#ajax_loading_div").removeClass("loading");
                            if (r != null) {
                                alert("Removed Successfully");
                            }
                        },
                        error: function (e) { alert(e.statusText); }

                    });
                });
</script>