How to send complex string via AJAX

Question

I have to send a complex string via AJAX in ASP.NET MVC from my view to a particular controller action.

The string needs to contain all sorts of characters like < , > , & , " , ' .

I am using the following code in javascript :

var request = new Sys.Net.WebRequest();
request.set_url("/Controller/Action?Param=" + str) ; // str is the string to be sent
request.set_httpVerb("POST");
request.invoke();

But when I run the page, the AJAX request does not reach the action in the controller.

Can anyone tell how to achieve this?

John Hoven · Accepted Answer · 2011-04-13 20:37:25Z

1

use encodeURIComponent on str

var request = new Sys.Net.WebRequest();
request.set_url("/Controller/Action?Param=" + encodeURIComponent(str)) ; // str is the string to be sent
request.set_httpVerb("POST");
request.invoke();

answered Apr 13, 2011 at 20:37

John Hoven

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Comments

Brad Christie · Accepted Answer · 2011-04-13 20:37:30Z

1

I think you're looking for Server.UrlEncode. or just plain encodeURI/encodeURIComponent in javascript.

Encode the raw data before appending it to the URL.

answered Apr 13, 2011 at 20:37

Brad Christie

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Comments

Dave Zych · Accepted Answer · 2012-11-12 05:26:06Z

1

create your delete method in global.asax like this

routes.MapRoute("Delete", //Route name
                "ControllerName/MethodName/{id}",
                new { controller = "controller Name", action = "Method Name", id = 1 }

edited Nov 12, 2012 at 5:26

Dave Zych

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answered Sep 12, 2011 at 7:55

Rajesh Reddy.Bijjam

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Eric Frick · Accepted Answer · 2011-04-13 20:37:21Z

0

request.set_url("/Controller/Action?Param='" + str+"'"+) ;

answered Apr 13, 2011 at 20:37

Eric Frick

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Comments

Darin Dimitrov · Accepted Answer · 2011-04-13 20:46:37Z

I would recommend you jQuery. Microsoft AJAX is like stone age and totally deprecated in ASP.NET MVC. I mean if you was working on some legacy ASP.NET WebForms application you would have had an excuse but in ASP.NET MVC there is no excuse. So:

$.ajax({
    url: '<%= Url.Action("Action", "Controller")',
    type: 'POST',
    data: { Param: str },
    success: function(result) {
        // handle the success
    }
});

Also if you need to send special characters such as <, >, ... you must ensure that the corresponding controller action is decorated with the [ValidateInput(false)] attribute:

[ValidateInput(false)]
public ActionResult Action(string Param)
{
    ...
}

and if you are using ASP.NET 4.0 you might also need to set the following in your web.config for this to work:

<httpRuntime requestValidationMode="2.0" />

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