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Question

Accessing an ASMX Web Service from JavaScript

Answer 1

A:

First you need to add [ScriptMethod] attributes to your Web Service methods. Then using the ScriptManager control on your ASPX page, register your web service:

<asp:ScriptManager ID="SM1" runat="server">
  <Services>
    <asp:ServiceReference Path="Service.asmx" />
  </Services>
</asp:ScriptManager>

You can then call GetTest() SetTest() etc from your Javascript.

Hope that helps!

DavidGouge 2009-10-20 13:09:37

Answer 2

+4 A:

To able to call WebService from javascript you must first add the [ScriptMethod] Annotation like

[System.Web.Script.Services.ScriptService]
public class MyWebService : System.Web.Services.WebService
{
}

To Call the webservice you must include it into an ScriptManager.

   <asp:ScriptManager ID="ScriptManager1" runat="server">
        <Scripts>
            <asp:ScriptReference Path="~/Script/jquery-1.3.2.js" />
            <asp:ScriptReference Path="~/Script/jquery-ui-1.7.2.custom.min.js" />
            <asp:ScriptReference Path="~/Script/json.jquery.js" />
        </Scripts>
        <Services>
            <asp:ServiceReference Path="~/WebService.asmx" />
        </Services>
    </asp:ScriptManager>

Now You need to call webservice as follows

[WebServiceNameSpace].MyWebService.MyWebMethod(
parameters,
function (e)//Function for success
{
},
function (e)//Function for failure
{
});

for you it will be like:

var id=1;
var text="bla bla";
NameSpace.WebService.SetTest(id, text,
function (e){
},
function (e){
});

you can also use jQuery to call webservice. Look at this

HTH

Maksud 2009-10-21 15:18:09

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Accessing an ASMX Web Service from JavaScript

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