Unable to reach webmethod with jQuery Ajax post request due to URL rewriting

I am having trouble with my jQuery AJAX function not calling my webmethod. Take a look at my code below:

$.ajax({
    type: "POST",
    url: "Search.aspx/GetCustomers",
    data: '{pageIndex:' + pageIndex + ',searchText:"' + $('#HiddenField1').val() + '",SearchBy:"' + $('#ddlSelectProfile').val() + '"}',
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: OnSuccess,
    failure: function (response) {
        alert(response.d);
    },
    error: function (response) {
        alert(response.d);
    }
});

[WebMethod]
public static string GetCustomers(int pageIndex, string searchText, string SearchBy)
{
    return GetCustomersData(pageIndex,searchText, SearchBy ).GetXml();
}

Additionally, make sure to check your web.config file for any necessary configurations:

<rewrite url="~/Search/(.+)-(.+).html" to="~/Search.aspx?MyTitleId=$1&amp;page=$2" processing="stop" />
jqueryasp.netajax

Answer №1

When working with ASP.NET Web Forms, a common issue arises when links resembling those used for web methods ("/WebPageName.aspx/WebMethodName") are not accounted for in URL rewrite rules designed to remove file extensions (such as ".aspx"). To address this, the following condition needs to be included in the URL rewrite rule...

<rule name="removeAspxExtension" stopProcessing="true">
    <match url="(.*)\.aspx" />
    <conditions>
        <!--New condition to be appended.-->
        <add input="{URL}" negate="true" pattern="(.*)\.aspx/(.*)" />
    </conditions>
    <action type="Redirect" url="{R:1}" redirectType="Permanent" />
</rule>

If RegisterRoutes() is utilized in RouteConfig.cs, it's crucial to also comment out specific lines that may impact links resembling "/WebPageName.aspx/WebMethodName". This step ensures proper functionality as illustrated below...

public static void RegisterRoutes(RouteCollection routes)
{
    routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

    // Commented out code block...
    //routes.MapRoute(
    //    name: "Default",
    //    url: "{controller}/{action}/{id}",
    //    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
    //);
}

By taking these actions, accessing web methods from the client-side using jQuery Ajax should now perform smoothly and as intended.

Answer №2

Modify the JavaScript code by changing "url: 'Search.aspx/GetCustomers'" to "url: 'Search/GetCustomers'". By doing this, you are restricting access to *.aspx pages with this particular rule ;)

Answer №3

Search.aspx/GetCustomers url has been updated to /Search.aspx/GetCustomers.

Please remember to include "/" in the URL.

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